builtin/mainmenu/dlg_contentstore.lua

   1 --Minetest
   2 --Copyright (C) 2018-20 rubenwardy
   3 --
   4 --This program is free software; you can redistribute it and/or modify
   5 --it under the terms of the GNU Lesser General Public License as published by
   6 --the Free Software Foundation; either version 2.1 of the License, or
   7 --(at your option) any later version.
   8 --
   9 --This program is distributed in the hope that it will be useful,
  10 --but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 --MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 --GNU Lesser General Public License for more details.
  13 --
  14 --You should have received a copy of the GNU Lesser General Public License along
  15 --with this program; if not, write to the Free Software Foundation, Inc.,
  16 --51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 if not core.get_http_api then
  19         function create_store_dlg()
  20                 return messagebox("store",
  21                                 fgettext("ContentDB is not available when Minetest was compiled without cURL"))
  22         end
  23         return
  24 end
  25
  26 -- Unordered preserves the original order of the ContentDB API,
  27 -- before the package list is ordered based on installed state.
  28 local store = { packages = {}, packages_full = {}, packages_full_unordered = {}, aliases = {} }
  29
  30 local http = core.get_http_api()
  31
  32 -- Screenshot
  33 local screenshot_dir = core.get_cache_path() .. DIR_DELIM .. "cdb"
  34 assert(core.create_dir(screenshot_dir))
  35 local screenshot_downloading = {}
  36 local screenshot_downloaded = {}
  37
  38 -- Filter
  39 local search_string = ""
  40 local cur_page = 1
  41 local num_per_page = 5
  42 local filter_type = 1
  43 local filter_types_titles = {
  44         fgettext("All packages"),
  45         fgettext("Games"),
  46         fgettext("Mods"),
  47         fgettext("Texture packs"),
  48 }
  49
  50 local number_downloading = 0
  51 local download_queue = {}
  52
  53 local filter_types_type = {
  54         nil,
  55         "game",
  56         "mod",
  57         "txp",
  58 }
  59
  60 local REASON_NEW = "new"
  61 local REASON_UPDATE = "update"
  62 local REASON_DEPENDENCY = "dependency"
  63
  64
  65 -- encodes for use as URL parameter or path component
  66 local function urlencode(str)
  67         return str:gsub("[^%a%d()._~-]", function(char)
  68                 return string.format("%%%02X", string.byte(char))
  69         end)
  70 end
  71 assert(urlencode("sample text?") == "sample%20text%3F")
  72
  73
  74 local function get_download_url(package, reason)
  75         local base_url = core.settings:get("contentdb_url")
  76         local ret = base_url .. ("/packages/%s/releases/%d/download/"):format(
  77                 package.url_part, package.release)
  78         if reason then
  79                 ret = ret .. "?reason=" .. reason
  80         end
  81         return ret
  82 end
  83
  84
  85 local function download_and_extract(param)
  86         local package = param.package
  87
  88         local filename = core.get_temp_path(true)
  89         if filename == "" or not core.download_file(param.url, filename) then
  90                 core.log("error", "Downloading " .. dump(param.url) .. " failed")
  91                 return {
  92                         msg = fgettext("Failed to download $1", package.name)
  93                 }
  94         end
  95
  96         local tempfolder = core.get_temp_path()
  97         if tempfolder ~= "" then
  98                 tempfolder = tempfolder .. DIR_DELIM .. "MT_" .. math.random(1, 1024000)
  99                 if not core.extract_zip(filename, tempfolder) then
 100                         tempfolder = nil
 101                 end
 102         else
 103                 tempfolder = nil
 104         end
 105         os.remove(filename)
 106         if not tempfolder then
 107                 return {
 108                         msg = fgettext("Install: Unsupported file type or broken archive"),
 109                 }
 110         end
 111
 112         return {
 113                 path = tempfolder
 114         }
 115 end
 116
 117 local function start_install(package, reason)
 118         local params = {
 119                 package = package,
 120                 url = get_download_url(package, reason),
 121         }
 122
 123         number_downloading = number_downloading + 1
 124
 125         local function callback(result)
 126                 if result.msg then
 127                         gamedata.errormessage = result.msg
 128                 else
 129                         local path, msg = pkgmgr.install_dir(package.type, result.path, package.name, package.path)
 130                         core.delete_dir(result.path)
 131                         if not path then
 132                                 gamedata.errormessage = msg
 133                         else
 134                                 core.log("action", "Installed package to " .. path)
 135
 136                                 local conf_path
 137                                 local name_is_title = false
 138                                 if package.type == "mod" then
 139                                         local actual_type = pkgmgr.get_folder_type(path)
 140                                         if actual_type.type == "modpack" then
 141                                                 conf_path = path .. DIR_DELIM .. "modpack.conf"
 142                                         else
 143                                                 conf_path = path .. DIR_DELIM .. "mod.conf"
 144                                         end
 145                                 elseif package.type == "game" then
 146                                         conf_path = path .. DIR_DELIM .. "game.conf"
 147                                         name_is_title = true
 148                                 elseif package.type == "txp" then
 149                                         conf_path = path .. DIR_DELIM .. "texture_pack.conf"
 150                                 end
 151
 152                                 if conf_path then
 153                                         local conf = Settings(conf_path)
 154                                         conf:set("title", package.title)
 155                                         if not name_is_title then
 156                                                 conf:set("name", package.name)
 157                                         end
 158                                         if not conf:get("description") then
 159                                                 conf:set("description", package.short_description)
 160                                         end
 161                                         conf:set("author",     package.author)
 162                                         conf:set("release",    package.release)
 163                                         conf:write()
 164                                 end
 165                         end
 166                 end
 167
 168                 package.downloading = false
 169
 170                 number_downloading = number_downloading - 1
 171
 172                 local next = download_queue[1]
 173                 if next then
 174                         table.remove(download_queue, 1)
 175
 176                         start_install(next.package, next.reason)
 177                 end
 178
 179                 ui.update()
 180         end
 181
 182         package.queued = false
 183         package.downloading = true
 184
 185         if not core.handle_async(download_and_extract, params, callback) then
 186                 core.log("error", "ERROR: async event failed")
 187                 gamedata.errormessage = fgettext("Failed to download $1", package.name)
 188                 return
 189         end
 190 end
 191
 192 local function queue_download(package, reason)
 193         local max_concurrent_downloads = tonumber(core.settings:get("contentdb_max_concurrent_downloads"))
 194         if number_downloading < max_concurrent_downloads then
 195                 start_install(package, reason)
 196         else
 197                 table.insert(download_queue, { package = package, reason = reason })
 198                 package.queued = true
 199         end
 200 end
 201
 202 local function get_raw_dependencies(package)
 203         if package.raw_deps then
 204                 return package.raw_deps
 205         end
 206
 207         local url_fmt = "/api/packages/%s/dependencies/?only_hard=1&protocol_version=%s&engine_version=%s"
 208         local version = core.get_version()
 209         local base_url = core.settings:get("contentdb_url")
 210         local url = base_url .. url_fmt:format(package.url_part, core.get_max_supp_proto(), urlencode(version.string))
 211
 212         local response = http.fetch_sync({ url = url })
 213         if not response.succeeded then
 214                 return
 215         end
 216
 217         local data = core.parse_json(response.data) or {}
 218
 219         local content_lookup = {}
 220         for _, pkg in pairs(store.packages_full) do
 221                 content_lookup[pkg.id] = pkg
 222         end
 223
 224         for id, raw_deps in pairs(data) do
 225                 local package2 = content_lookup[id:lower()]
 226                 if package2 and not package2.raw_deps then
 227                         package2.raw_deps = raw_deps
 228
 229                         for _, dep in pairs(raw_deps) do
 230                                 local packages = {}
 231                                 for i=1, #dep.packages do
 232                                         packages[#packages + 1] = content_lookup[dep.packages[i]:lower()]
 233                                 end
 234                                 dep.packages = packages
 235                         end
 236                 end
 237         end
 238
 239         return package.raw_deps
 240 end
 241
 242 local function has_hard_deps(raw_deps)
 243         for i=1, #raw_deps do
 244                 if not raw_deps[i].is_optional then
 245                         return true
 246                 end
 247         end
 248
 249         return false
 250 end
 251
 252 -- Recursively resolve dependencies, given the installed mods
 253 local function resolve_dependencies_2(raw_deps, installed_mods, out)
 254         local function resolve_dep(dep)
 255                 -- Check whether it's already installed
 256                 if installed_mods[dep.name] then
 257                         return {
 258                                 is_optional = dep.is_optional,
 259                                 name = dep.name,
 260                                 installed = true,
 261                         }
 262                 end
 263
 264                 -- Find exact name matches
 265                 local fallback
 266                 for _, package in pairs(dep.packages) do
 267                         if package.type ~= "game" then
 268                                 if package.name == dep.name then
 269                                         return {
 270                                                 is_optional = dep.is_optional,
 271                                                 name = dep.name,
 272                                                 installed = false,
 273                                                 package = package,
 274                                         }
 275                                 elseif not fallback then
 276                                         fallback = package
 277                                 end
 278                         end
 279                 end
 280
 281                 -- Otherwise, find the first mod that fulfils it
 282                 if fallback then
 283                         return {
 284                                 is_optional = dep.is_optional,
 285                                 name = dep.name,
 286                                 installed = false,
 287                                 package = fallback,
 288                         }
 289                 end
 290
 291                 return {
 292                         is_optional = dep.is_optional,
 293                         name = dep.name,
 294                         installed = false,
 295                 }
 296         end
 297
 298         for _, dep in pairs(raw_deps) do
 299                 if not dep.is_optional and not out[dep.name] then
 300                         local result  = resolve_dep(dep)
 301                         out[dep.name] = result
 302                         if result and result.package and not result.installed then
 303                                 local raw_deps2 = get_raw_dependencies(result.package)
 304                                 if raw_deps2 then
 305                                         resolve_dependencies_2(raw_deps2, installed_mods, out)
 306                                 end
 307                         end
 308                 end
 309         end
 310
 311         return true
 312 end
 313
 314 -- Resolve dependencies for a package, calls the recursive version.
 315 local function resolve_dependencies(raw_deps, game)
 316         assert(game)
 317
 318         local installed_mods = {}
 319
 320         local mods = {}
 321         pkgmgr.get_game_mods(game, mods)
 322         for _, mod in pairs(mods) do
 323                 installed_mods[mod.name] = true
 324         end
 325
 326         for _, mod in pairs(pkgmgr.global_mods:get_list()) do
 327                 installed_mods[mod.name] = true
 328         end
 329
 330         local out = {}
 331         if not resolve_dependencies_2(raw_deps, installed_mods, out) then
 332                 return nil
 333         end
 334
 335         local retval = {}
 336         for _, dep in pairs(out) do
 337                 retval[#retval + 1] = dep
 338         end
 339
 340         table.sort(retval, function(a, b)
 341                 return a.name < b.name
 342         end)
 343
 344         return retval
 345 end
 346
 347 local install_dialog = {}
 348 function install_dialog.get_formspec()
 349         local package = install_dialog.package
 350         local raw_deps = install_dialog.raw_deps
 351         local will_install_deps = install_dialog.will_install_deps
 352
 353         local selected_game_idx = 1
 354         local selected_gameid = core.settings:get("menu_last_game")
 355         local games = table.copy(pkgmgr.games)
 356         for i=1, #games do
 357                 if selected_gameid and games[i].id == selected_gameid then
 358                         selected_game_idx = i
 359                 end
 360
 361                 games[i] = core.formspec_escape(games[i].title)
 362         end
 363
 364         local selected_game = pkgmgr.games[selected_game_idx]
 365         local deps_to_install = 0
 366         local deps_not_found = 0
 367
 368         install_dialog.dependencies = resolve_dependencies(raw_deps, selected_game)
 369         local formatted_deps = {}
 370         for _, dep in pairs(install_dialog.dependencies) do
 371                 formatted_deps[#formatted_deps + 1] = "#fff"
 372                 formatted_deps[#formatted_deps + 1] = core.formspec_escape(dep.name)
 373                 if dep.installed then
 374                         formatted_deps[#formatted_deps + 1] = "#ccf"
 375                         formatted_deps[#formatted_deps + 1] = fgettext("Already installed")
 376                 elseif dep.package then
 377                         formatted_deps[#formatted_deps + 1] = "#cfc"
 378                         formatted_deps[#formatted_deps + 1] = fgettext("$1 by $2", dep.package.title, dep.package.author)
 379                         deps_to_install = deps_to_install + 1
 380                 else
 381                         formatted_deps[#formatted_deps + 1] = "#f00"
 382                         formatted_deps[#formatted_deps + 1] = fgettext("Not found")
 383                         deps_not_found = deps_not_found + 1
 384                 end
 385         end
 386
 387         local message_bg = "#3333"
 388         local message
 389         if will_install_deps then
 390                 message = fgettext("$1 and $2 dependencies will be installed.", package.title, deps_to_install)
 391         else
 392                 message = fgettext("$1 will be installed, and $2 dependencies will be skipped.", package.title, deps_to_install)
 393         end
 394         if deps_not_found > 0 then
 395                 message = fgettext("$1 required dependencies could not be found.", deps_not_found) ..
 396                                 " " .. fgettext("Please check that the base game is correct.", deps_not_found) ..
 397                                 "\n" .. message
 398                 message_bg = mt_color_orange
 399         end
 400
 401         local formspec = {
 402                 "formspec_version[3]",
 403                 "size[7,7.85]",
 404                 "style[title;border=false]",
 405                 "box[0,0;7,0.5;#3333]",
 406                 "button[0,0;7,0.5;title;", fgettext("Install $1", package.title) , "]",
 407
 408                 "container[0.375,0.70]",
 409
 410                 "label[0,0.25;", fgettext("Base Game:"), "]",
 411                 "dropdown[2,0;4.25,0.5;selected_game;", table.concat(games, ","), ";", selected_game_idx, "]",
 412
 413                 "label[0,0.8;", fgettext("Dependencies:"), "]",
 414
 415                 "tablecolumns[color;text;color;text]",
 416                 "table[0,1.1;6.25,3;packages;", table.concat(formatted_deps, ","), "]",
 417
 418                 "container_end[]",
 419
 420                 "checkbox[0.375,5.1;will_install_deps;",
 421                         fgettext("Install missing dependencies"), ";",
 422                         will_install_deps and "true" or "false", "]",
 423
 424                 "box[0,5.4;7,1.2;", message_bg, "]",
 425                 "textarea[0.375,5.5;6.25,1;;;", message, "]",
 426
 427                 "container[1.375,6.85]",
 428                 "button[0,0;2,0.8;install_all;", fgettext("Install"), "]",
 429                 "button[2.25,0;2,0.8;cancel;", fgettext("Cancel"), "]",
 430                 "container_end[]",
 431         }
 432
 433         return table.concat(formspec, "")
 434 end
 435
 436 function install_dialog.handle_submit(this, fields)
 437         if fields.cancel then
 438                 this:delete()
 439                 return true
 440         end
 441
 442         if fields.will_install_deps ~= nil then
 443                 install_dialog.will_install_deps = core.is_yes(fields.will_install_deps)
 444                 return true
 445         end
 446
 447         if fields.install_all then
 448                 queue_download(install_dialog.package, REASON_NEW)
 449
 450                 if install_dialog.will_install_deps then
 451                         for _, dep in pairs(install_dialog.dependencies) do
 452                                 if not dep.is_optional and not dep.installed and dep.package then
 453                                         queue_download(dep.package, REASON_DEPENDENCY)
 454                                 end
 455                         end
 456                 end
 457
 458                 this:delete()
 459                 return true
 460         end
 461
 462         if fields.selected_game then
 463                 for _, game in pairs(pkgmgr.games) do
 464                         if game.title == fields.selected_game then
 465                                 core.settings:set("menu_last_game", game.id)
 466                                 break
 467                         end
 468                 end
 469                 return true
 470         end
 471
 472         return false
 473 end
 474
 475 function install_dialog.create(package, raw_deps)
 476         install_dialog.dependencies = nil
 477         install_dialog.package = package
 478         install_dialog.raw_deps = raw_deps
 479         install_dialog.will_install_deps = true
 480         return dialog_create("install_dialog",
 481                         install_dialog.get_formspec,
 482                         install_dialog.handle_submit,
 483                         nil)
 484 end
 485
 486
 487 local confirm_overwrite = {}
 488 function confirm_overwrite.get_formspec()
 489         local package = confirm_overwrite.package
 490
 491         return confirmation_formspec(
 492                 fgettext("\"$1\" already exists. Would you like to overwrite it?", package.name),
 493                 'install', fgettext("Overwrite"),
 494                 'cancel', fgettext("Cancel"))
 495 end
 496
 497 function confirm_overwrite.handle_submit(this, fields)
 498         if fields.cancel then
 499                 this:delete()
 500                 return true
 501         end
 502
 503         if fields.install then
 504                 this:delete()
 505                 confirm_overwrite.callback()
 506                 return true
 507         end
 508
 509         return false
 510 end
 511
 512 function confirm_overwrite.create(package, callback)
 513         assert(type(package) == "table")
 514         assert(type(callback) == "function")
 515
 516         confirm_overwrite.package = package
 517         confirm_overwrite.callback = callback
 518         return dialog_create("confirm_overwrite",
 519                 confirm_overwrite.get_formspec,
 520                 confirm_overwrite.handle_submit,
 521                 nil)
 522 end
 523
 524
 525 local function get_file_extension(path)
 526         local parts = path:split(".")
 527         return parts[#parts]
 528 end
 529
 530 local function get_screenshot(package)
 531         if not package.thumbnail then
 532                 return defaulttexturedir .. "no_screenshot.png"
 533         elseif screenshot_downloading[package.thumbnail] then
 534                 return defaulttexturedir .. "loading_screenshot.png"
 535         end
 536
 537         -- Get tmp screenshot path
 538         local ext = get_file_extension(package.thumbnail)
 539         local filepath = screenshot_dir .. DIR_DELIM ..
 540                 ("%s-%s-%s.%s"):format(package.type, package.author, package.name, ext)
 541
 542         -- Return if already downloaded
 543         local file = io.open(filepath, "r")
 544         if file then
 545                 file:close()
 546                 return filepath
 547         end
 548
 549         -- Show error if we've failed to download before
 550         if screenshot_downloaded[package.thumbnail] then
 551                 return defaulttexturedir .. "error_screenshot.png"
 552         end
 553
 554         -- Download
 555
 556         local function download_screenshot(params)
 557                 return core.download_file(params.url, params.dest)
 558         end
 559         local function callback(success)
 560                 screenshot_downloading[package.thumbnail] = nil
 561                 screenshot_downloaded[package.thumbnail] = true
 562                 if not success then
 563                         core.log("warning", "Screenshot download failed for some reason")
 564                 end
 565                 ui.update()
 566         end
 567         if core.handle_async(download_screenshot,
 568                         { dest = filepath, url = package.thumbnail }, callback) then
 569                 screenshot_downloading[package.thumbnail] = true
 570         else
 571                 core.log("error", "ERROR: async event failed")
 572                 return defaulttexturedir .. "error_screenshot.png"
 573         end
 574
 575         return defaulttexturedir .. "loading_screenshot.png"
 576 end
 577
 578 function store.load()
 579         local version = core.get_version()
 580         local base_url = core.settings:get("contentdb_url")
 581         local url = base_url ..
 582                 "/api/packages/?type=mod&type=game&type=txp&protocol_version=" ..
 583                 core.get_max_supp_proto() .. "&engine_version=" .. urlencode(version.string)
 584
 585         for _, item in pairs(core.settings:get("contentdb_flag_blacklist"):split(",")) do
 586                 item = item:trim()
 587                 if item ~= "" then
 588                         url = url .. "&hide=" .. urlencode(item)
 589                 end
 590         end
 591
 592         local response = http.fetch_sync({ url = url })
 593         if not response.succeeded then
 594                 return
 595         end
 596
 597         store.packages_full = core.parse_json(response.data) or {}
 598         store.aliases = {}
 599
 600         for _, package in pairs(store.packages_full) do
 601                 local name_len = #package.name
 602                 -- This must match what store.update_paths() does!
 603                 package.id = package.author:lower() .. "/"
 604                 if package.type == "game" and name_len > 5 and package.name:sub(name_len - 4) == "_game" then
 605                         package.id = package.id .. package.name:sub(1, name_len - 5)
 606                 else
 607                         package.id = package.id .. package.name
 608                 end
 609
 610                 package.url_part = urlencode(package.author) .. "/" .. urlencode(package.name)
 611
 612                 if package.aliases then
 613                         for _, alias in ipairs(package.aliases) do
 614                                 -- We currently don't support name changing
 615                                 local suffix = "/" .. package.name
 616                                 if alias:sub(-#suffix) == suffix then
 617                                         store.aliases[alias:lower()] = package.id
 618                                 end
 619                         end
 620                 end
 621         end
 622
 623         store.packages_full_unordered = store.packages_full
 624         store.packages = store.packages_full
 625         store.loaded = true
 626 end
 627
 628 function store.update_paths()
 629         local mod_hash = {}
 630         pkgmgr.refresh_globals()
 631         for _, mod in pairs(pkgmgr.global_mods:get_list()) do
 632                 if mod.author and mod.release > 0 then
 633                         local id = mod.author:lower() .. "/" .. mod.name
 634                         mod_hash[store.aliases[id] or id] = mod
 635                 end
 636         end
 637
 638         local game_hash = {}
 639         pkgmgr.update_gamelist()
 640         for _, game in pairs(pkgmgr.games) do
 641                 if game.author ~= "" and game.release > 0 then
 642                         local id = game.author:lower() .. "/" .. game.id
 643                         game_hash[store.aliases[id] or id] = game
 644                 end
 645         end
 646
 647         local txp_hash = {}
 648         for _, txp in pairs(pkgmgr.get_texture_packs()) do
 649                 if txp.author and txp.release > 0 then
 650                         local id = txp.author:lower() .. "/" .. txp.name
 651                         txp_hash[store.aliases[id] or id] = txp
 652                 end
 653         end
 654
 655         for _, package in pairs(store.packages_full) do
 656                 local content
 657                 if package.type == "mod" then
 658                         content = mod_hash[package.id]
 659                 elseif package.type == "game" then
 660                         content = game_hash[package.id]
 661                 elseif package.type == "txp" then
 662                         content = txp_hash[package.id]
 663                 end
 664
 665                 if content then
 666                         package.path = content.path
 667                         package.installed_release = content.release or 0
 668                 else
 669                         package.path = nil
 670                 end
 671         end
 672 end
 673
 674 function store.sort_packages()
 675         local ret = {}
 676
 677         -- Add installed content
 678         for i=1, #store.packages_full_unordered do
 679                 local package = store.packages_full_unordered[i]
 680                 if package.path then
 681                         ret[#ret + 1] = package
 682                 end
 683         end
 684
 685         -- Sort installed content by title
 686         table.sort(ret, function(a, b)
 687                 return a.title < b.title
 688         end)
 689
 690         -- Add uninstalled content
 691         for i=1, #store.packages_full_unordered do
 692                 local package = store.packages_full_unordered[i]
 693                 if not package.path then
 694                         ret[#ret + 1] = package
 695                 end
 696         end
 697
 698         store.packages_full = ret
 699 end
 700
 701 function store.filter_packages(query)
 702         if query == "" and filter_type == 1 then
 703                 store.packages = store.packages_full
 704                 return
 705         end
 706
 707         local keywords = {}
 708         for word in query:lower():gmatch("%S+") do
 709                 table.insert(keywords, word)
 710         end
 711
 712         local function matches_keywords(package)
 713                 for k = 1, #keywords do
 714                         local keyword = keywords[k]
 715
 716                         if string.find(package.name:lower(), keyword, 1, true) or
 717                                         string.find(package.title:lower(), keyword, 1, true) or
 718                                         string.find(package.author:lower(), keyword, 1, true) or
 719                                         string.find(package.short_description:lower(), keyword, 1, true) then
 720                                 return true
 721                         end
 722                 end
 723
 724                 return false
 725         end
 726
 727         store.packages = {}
 728         for _, package in pairs(store.packages_full) do
 729                 if (query == "" or matches_keywords(package)) and
 730                                 (filter_type == 1 or package.type == filter_types_type[filter_type]) then
 731                         store.packages[#store.packages + 1] = package
 732                 end
 733         end
 734 end
 735
 736 function store.get_formspec(dlgdata)
 737         store.update_paths()
 738
 739         dlgdata.pagemax = math.max(math.ceil(#store.packages / num_per_page), 1)
 740         if cur_page > dlgdata.pagemax then
 741                 cur_page = 1
 742         end
 743
 744         local W = 15.75
 745         local H = 9.5
 746         local formspec
 747         if #store.packages_full > 0 then
 748                 formspec = {
 749                         "formspec_version[3]",
 750                         "size[15.75,9.5]",
 751                         "position[0.5,0.55]",
 752
 753                         "style[status,downloading,queued;border=false]",
 754
 755                         "container[0.375,0.375]",
 756                         "field[0,0;7.225,0.8;search_string;;", core.formspec_escape(search_string), "]",
 757                         "field_close_on_enter[search_string;false]",
 758                         "image_button[7.3,0;0.8,0.8;", core.formspec_escape(defaulttexturedir .. "search.png"), ";search;]",
 759                         "image_button[8.125,0;0.8,0.8;", core.formspec_escape(defaulttexturedir .. "clear.png"), ";clear;]",
 760                         "dropdown[9.6,0;2.4,0.8;type;", table.concat(filter_types_titles, ","), ";", filter_type, "]",
 761                         "container_end[]",
 762
 763                         -- Page nav buttons
 764                         "container[0,", H - 0.8 - 0.375, "]",
 765                         "button[0.375,0;4,0.8;back;", fgettext("Back to Main Menu"), "]",
 766
 767                         "container[", W - 0.375 - 0.8*4 - 2,  ",0]",
 768                         "image_button[0,0;0.8,0.8;", core.formspec_escape(defaulttexturedir), "start_icon.png;pstart;]",
 769                         "image_button[0.8,0;0.8,0.8;", core.formspec_escape(defaulttexturedir), "prev_icon.png;pback;]",
 770                         "style[pagenum;border=false]",
 771                         "button[1.6,0;2,0.8;pagenum;", tonumber(cur_page), " / ", tonumber(dlgdata.pagemax), "]",
 772                         "image_button[3.6,0;0.8,0.8;", core.formspec_escape(defaulttexturedir), "next_icon.png;pnext;]",
 773                         "image_button[4.4,0;0.8,0.8;", core.formspec_escape(defaulttexturedir), "end_icon.png;pend;]",
 774                         "container_end[]",
 775
 776                         "container_end[]",
 777                 }
 778
 779                 if number_downloading > 0 then
 780                         formspec[#formspec + 1] = "button[12.75,0.375;2.625,0.8;downloading;"
 781                         if #download_queue > 0 then
 782                                 formspec[#formspec + 1] = fgettext("$1 downloading,\n$2 queued", number_downloading, #download_queue)
 783                         else
 784                                 formspec[#formspec + 1] = fgettext("$1 downloading...", number_downloading)
 785                         end
 786                         formspec[#formspec + 1] = "]"
 787                 else
 788                         local num_avail_updates = 0
 789                         for i=1, #store.packages_full do
 790                                 local package = store.packages_full[i]
 791                                 if package.path and package.installed_release < package.release and
 792                                                 not (package.downloading or package.queued) then
 793                                         num_avail_updates = num_avail_updates + 1
 794                                 end
 795                         end
 796
 797                         if num_avail_updates == 0 then
 798                                 formspec[#formspec + 1] = "button[12.75,0.375;2.625,0.8;status;"
 799                                 formspec[#formspec + 1] = fgettext("No updates")
 800                                 formspec[#formspec + 1] = "]"
 801                         else
 802                                 formspec[#formspec + 1] = "button[12.75,0.375;2.625,0.8;update_all;"
 803                                 formspec[#formspec + 1] = fgettext("Update All [$1]", num_avail_updates)
 804                                 formspec[#formspec + 1] = "]"
 805                         end
 806                 end
 807
 808                 if #store.packages == 0 then
 809                         formspec[#formspec + 1] = "label[4,3;"
 810                         formspec[#formspec + 1] = fgettext("No results")
 811                         formspec[#formspec + 1] = "]"
 812                 end
 813         else
 814                 formspec = {
 815                         "size[12,7]",
 816                         "position[0.5,0.55]",
 817                         "label[4,3;", fgettext("No packages could be retrieved"), "]",
 818                         "container[0,", H - 0.8 - 0.375, "]",
 819                         "button[0,0;4,0.8;back;", fgettext("Back to Main Menu"), "]",
 820                         "container_end[]",
 821                 }
 822         end
 823
 824         -- download/queued tooltips always have the same message
 825         local tooltip_colors = ";#dff6f5;#302c2e]"
 826         formspec[#formspec + 1] = "tooltip[downloading;" .. fgettext("Downloading...") .. tooltip_colors
 827         formspec[#formspec + 1] = "tooltip[queued;" .. fgettext("Queued") .. tooltip_colors
 828
 829         local start_idx = (cur_page - 1) * num_per_page + 1
 830         for i=start_idx, math.min(#store.packages, start_idx+num_per_page-1) do
 831                 local package = store.packages[i]
 832                 local container_y = (i - start_idx) * 1.375 + (2*0.375 + 0.8)
 833                 formspec[#formspec + 1] = "container[0.375,"
 834                 formspec[#formspec + 1] = container_y
 835                 formspec[#formspec + 1] = "]"
 836
 837                 -- image
 838                 formspec[#formspec + 1] = "image[0,0;1.5,1;"
 839                 formspec[#formspec + 1] = core.formspec_escape(get_screenshot(package))
 840                 formspec[#formspec + 1] = "]"
 841
 842                 -- title
 843                 formspec[#formspec + 1] = "label[1.875,0.1;"
 844                 formspec[#formspec + 1] = core.formspec_escape(
 845                                 core.colorize(mt_color_green, package.title) ..
 846                                 core.colorize("#BFBFBF", " by " .. package.author))
 847                 formspec[#formspec + 1] = "]"
 848
 849                 -- buttons
 850                 local left_base = "image_button[-1.55,0;0.7,0.7;" .. core.formspec_escape(defaulttexturedir)
 851                 formspec[#formspec + 1] = "container["
 852                 formspec[#formspec + 1] = W - 0.375*2
 853                 formspec[#formspec + 1] = ",0.1]"
 854
 855                 if package.downloading then
 856                         formspec[#formspec + 1] = "animated_image[-1.7,-0.15;1,1;downloading;"
 857                         formspec[#formspec + 1] = core.formspec_escape(defaulttexturedir)
 858                         formspec[#formspec + 1] = "cdb_downloading.png;3;400;]"
 859                 elseif package.queued then
 860                         formspec[#formspec + 1] = left_base
 861                         formspec[#formspec + 1] = "cdb_queued.png;queued;]"
 862                 elseif not package.path then
 863                         local elem_name = "install_" .. i .. ";"
 864                         formspec[#formspec + 1] = "style[" .. elem_name .. "bgcolor=#71aa34]"
 865                         formspec[#formspec + 1] = left_base .. "cdb_add.png;" .. elem_name .. "]"
 866                         formspec[#formspec + 1] = "tooltip[" .. elem_name .. fgettext("Install") .. tooltip_colors
 867                 else
 868                         if package.installed_release < package.release then
 869
 870                                 -- The install_ action also handles updating
 871                                 local elem_name = "install_" .. i .. ";"
 872                                 formspec[#formspec + 1] = "style[" .. elem_name .. "bgcolor=#28ccdf]"
 873                                 formspec[#formspec + 1] = left_base .. "cdb_update.png;" .. elem_name .. "]"
 874                                 formspec[#formspec + 1] = "tooltip[" .. elem_name .. fgettext("Update") .. tooltip_colors
 875                         else
 876
 877                                 local elem_name = "uninstall_" .. i .. ";"
 878                                 formspec[#formspec + 1] = "style[" .. elem_name .. "bgcolor=#a93b3b]"
 879                                 formspec[#formspec + 1] = left_base .. "cdb_clear.png;" .. elem_name .. "]"
 880                                 formspec[#formspec + 1] = "tooltip[" .. elem_name .. fgettext("Uninstall") .. tooltip_colors
 881                         end
 882                 end
 883
 884                 local web_elem_name = "view_" .. i .. ";"
 885                 formspec[#formspec + 1] = "image_button[-0.7,0;0.7,0.7;" ..
 886                         core.formspec_escape(defaulttexturedir) .. "cdb_viewonline.png;" .. web_elem_name .. "]"
 887                 formspec[#formspec + 1] = "tooltip[" .. web_elem_name ..
 888                         fgettext("View more information in a web browser") .. tooltip_colors
 889                 formspec[#formspec + 1] = "container_end[]"
 890
 891                 -- description
 892                 local description_width = W - 0.375*5 - 0.85 - 2*0.7
 893                 formspec[#formspec + 1] = "textarea[1.855,0.3;"
 894                 formspec[#formspec + 1] = tostring(description_width)
 895                 formspec[#formspec + 1] = ",0.8;;;"
 896                 formspec[#formspec + 1] = core.formspec_escape(package.short_description)
 897                 formspec[#formspec + 1] = "]"
 898
 899                 formspec[#formspec + 1] = "container_end[]"
 900         end
 901
 902         return table.concat(formspec, "")
 903 end
 904
 905 function store.handle_submit(this, fields)
 906         if fields.search or fields.key_enter_field == "search_string" then
 907                 search_string = fields.search_string:trim()
 908                 cur_page = 1
 909                 store.filter_packages(search_string)
 910                 return true
 911         end
 912
 913         if fields.clear then
 914                 search_string = ""
 915                 cur_page = 1
 916                 store.filter_packages("")
 917                 return true
 918         end
 919
 920         if fields.back then
 921                 this:delete()
 922                 return true
 923         end
 924
 925         if fields.pstart then
 926                 cur_page = 1
 927                 return true
 928         end
 929
 930         if fields.pend then
 931                 cur_page = this.data.pagemax
 932                 return true
 933         end
 934
 935         if fields.pnext then
 936                 cur_page = cur_page + 1
 937                 if cur_page > this.data.pagemax then
 938                         cur_page = 1
 939                 end
 940                 return true
 941         end
 942
 943         if fields.pback then
 944                 if cur_page == 1 then
 945                         cur_page = this.data.pagemax
 946                 else
 947                         cur_page = cur_page - 1
 948                 end
 949                 return true
 950         end
 951
 952         if fields.type then
 953                 local new_type = table.indexof(filter_types_titles, fields.type)
 954                 if new_type ~= filter_type then
 955                         filter_type = new_type
 956                         store.filter_packages(search_string)
 957                         return true
 958                 end
 959         end
 960
 961         if fields.update_all then
 962                 for i=1, #store.packages_full do
 963                         local package = store.packages_full[i]
 964                         if package.path and package.installed_release < package.release and
 965                                         not (package.downloading or package.queued) then
 966                                 queue_download(package, REASON_UPDATE)
 967                         end
 968                 end
 969                 return true
 970         end
 971
 972         local start_idx = (cur_page - 1) * num_per_page + 1
 973         assert(start_idx ~= nil)
 974         for i=start_idx, math.min(#store.packages, start_idx+num_per_page-1) do
 975                 local package = store.packages[i]
 976                 assert(package)
 977
 978                 if fields["install_" .. i] then
 979                         local install_parent
 980                         if package.type == "mod" then
 981                                 install_parent = core.get_modpath()
 982                         elseif package.type == "game" then
 983                                 install_parent = core.get_gamepath()
 984                         elseif package.type == "txp" then
 985                                 install_parent = core.get_texturepath()
 986                         else
 987                                 error("Unknown package type: " .. package.type)
 988                         end
 989
 990
 991                         local function on_confirm()
 992                                 local deps = get_raw_dependencies(package)
 993                                 if deps and has_hard_deps(deps) then
 994                                         local dlg = install_dialog.create(package, deps)
 995                                         dlg:set_parent(this)
 996                                         this:hide()
 997                                         dlg:show()
 998                                 else
 999                                         queue_download(package, package.path and REASON_UPDATE or REASON_NEW)
1000                                 end
1001                         end
1002
1003                         if not package.path and core.is_dir(install_parent .. DIR_DELIM .. package.name) then
1004                                 local dlg = confirm_overwrite.create(package, on_confirm)
1005                                 dlg:set_parent(this)
1006                                 this:hide()
1007                                 dlg:show()
1008                         else
1009                                 on_confirm()
1010                         end
1011
1012                         return true
1013                 end
1014
1015                 if fields["uninstall_" .. i] then
1016                         local dlg = create_delete_content_dlg(package)
1017                         dlg:set_parent(this)
1018                         this:hide()
1019                         dlg:show()
1020                         return true
1021                 end
1022
1023                 if fields["view_" .. i] then
1024                         local url = ("%s/packages/%s?protocol_version=%d"):format(
1025                                         core.settings:get("contentdb_url"), package.url_part,
1026                                         core.get_max_supp_proto())
1027                         core.open_url(url)
1028                         return true
1029                 end
1030         end
1031
1032         return false
1033 end
1034
1035 function create_store_dlg(type)
1036         if not store.loaded or #store.packages_full == 0 then
1037                 store.load()
1038         end
1039
1040         store.update_paths()
1041         store.sort_packages()
1042
1043         search_string = ""
1044         cur_page = 1
1045
1046         if type then
1047                 -- table.indexof does not work on tables that contain `nil`
1048                 for i, v in pairs(filter_types_type) do
1049                         if v == type then
1050                                 filter_type = i
1051                                 break
1052                         end
1053                 end
1054         end
1055
1056         store.filter_packages(search_string)
1057
1058         return dialog_create("store",
1059                         store.get_formspec,
1060                         store.handle_submit,
1061                         nil)
1062 end