From 6f44a29b882bb84ce778b70ca92380266e37c89d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mart=C3=ADn=20Fern=C3=A1ndez?=
 <975883+pazos@users.noreply.github.com>
Date: Wed, 3 Aug 2022 16:18:47 +0200
Subject: [PATCH] add tool to update F-Droid metadata based on weblate
 translations (#9090)

---
 tools/update-metadata.lua | 102 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100755 tools/update-metadata.lua

diff --git a/tools/update-metadata.lua b/tools/update-metadata.lua
new file mode 100755
index 000000000..a4ae53343
--- /dev/null
+++ b/tools/update-metadata.lua
@@ -0,0 +1,102 @@
+#!/usr/bin/env luajit
+
+-- tool to generate localized metadata
+--
+-- metadata is fetched by F-Droid on each tagged release and used to update
+-- https://f-droid.org/packages/org.koreader.launcher.fdroid/
+--
+-- usage: ./tools/update_metadata.lua
+--
+-- NOTE: title and screenshots are not translated. These resources are located in metadata/en-US
+
+package.path = "frontend/?.lua;" .. package.path
+local _ = require("gettext")
+
+local metadata = {
+    ["short_description.txt"] = _("Ebook reader with support for many formats like PDF, DjVu, EPUB, FB2, CBZ."),
+    ["full_description.txt"] = _([[* portable: runs on embedded devices (Cervantes, Kindle, Kobo, PocketBook), Android and Linux computers. Developers can run a KOReader emulator in Linux and MacOS.
+
+* multi-format documents: supports fixed page formats (PDF, DjVu, CBT, CBZ) and reflowable e-book formats (EPUB, FB2, Mobi, DOC, CHM, TXT). Scanned PDF/DjVu documents can also be reflowed with the built-in K2pdfopt library.
+
+* full-featured reading: multi-lingual user interface with a highly customizable reader view and many typesetting options. You can set arbitrary page margins, override line spacing and choose external fonts and styles. It has multi-lingual hyphenation dictionaries bundled into the application.
+
+* integrated with calibre (search metadata, receive ebooks wirelessly, browse library via OPDS),  Wallabag, Wikipedia, Google Translate and other content providers.
+
+* optimized for e-ink devices: custom UI without animation, with paginated menus, adjustable text contrast, and easy zoom to fit content or page in paged media.
+
+* extensible via plugins
+
+* and much more: look up words with StarDict dictionaries / Wikipedia, add your own online OPDS catalogs and RSS feeds, online over-the-air software updates, an FTP client, an SSH server, …
+]]),
+}
+
+local function isFile(str)
+    local f = io.open(str, "r")
+    if f then
+        f:close()
+        return true
+    end
+    return false
+end
+
+local function writeFile(str, path)
+    local f = io.open(path, "w")
+    if f then
+        f:write(str)
+        f:write("\n")
+        f:close()
+    end
+end
+
+local function isLocaleDir(str)
+    for _, v in ipairs({"templates", "README.md", "LICENSE"}) do
+        if str == v then return false end
+    end
+    return true
+end
+
+local function getLocales()
+    local locales = {}
+    local output = io.popen('ls l10n')
+    if not output then return {} end
+    for dir in output:lines() do
+        if isLocaleDir(dir) then
+            locales[#locales + 1] = dir
+        end
+    end
+    output:close()
+    return locales
+end
+
+----------------------------------------------------------------
+print("updating metadata for " .. #getLocales() .. " languages")
+for file, str in pairs(metadata) do
+    local count = { new = 0, updated = 0, not_translated = 0 }
+
+    -- update english
+    _.changeLang("en")
+    local source = _(str)
+    local metadata_file = "metadata/en-US/" .. file
+    writeFile(source, metadata_file)
+
+    -- update translations
+    for __, lang in ipairs(getLocales()) do
+        _.changeLang(lang)
+        local translation = _(str)
+        if source ~= translation then
+            local metadata_dir = "metadata/" .. lang
+            metadata_file = metadata_dir .. "/" .. file
+            os.execute('mkdir -p ' .. metadata_dir)
+            if isFile(metadata_file) then
+                count.updated = count.updated + 1
+            else
+                count.new = count.new + 1
+            end
+            writeFile(translation, metadata_file)
+        else
+            count.not_translated = count.not_translated + 1
+        end
+    end
+    print(string.format("%s: %d new | %d updated | %d not translated",
+        file, count.new, count.updated, count.not_translated))
+end