From 0fd94e7a44db946b66269bbed6d0c27ecf78d708 Mon Sep 17 00:00:00 2001
From: John Livingston <git@john-livingston.fr>
Date: Thu, 22 Feb 2024 12:43:41 +0100
Subject: [PATCH] Slow Mode: infobox translation.

---
 conversejs/build-conversejs-patch-i18n.js | 97 +++++++++++++++++++++++
 conversejs/build-conversejs.sh            |  3 +
 2 files changed, 100 insertions(+)
 create mode 100644 conversejs/build-conversejs-patch-i18n.js

diff --git a/conversejs/build-conversejs-patch-i18n.js b/conversejs/build-conversejs-patch-i18n.js
new file mode 100644
index 00000000..eb19020c
--- /dev/null
+++ b/conversejs/build-conversejs-patch-i18n.js
@@ -0,0 +1,97 @@
+#!/bin/env node
+const fs = require('node:fs')
+const path = require('node:path')
+const YAML = require('yaml')
+
+/**
+ * This script will patch ConverseJS .po files, to add custom strings.
+ */
+
+const livechatDir = path.resolve(__dirname, '..', 'languages')
+const converseDir = path.resolve(__dirname, '..', 'build', 'conversejs', 'src', 'i18n')
+
+// Labels to import:
+const labels = loadLabels([
+  'slow_mode_info'
+])
+
+function loadLabels (keys) {
+  const labels = {}
+  const sourceContent = fs.readFileSync(path.resolve(livechatDir, 'en.yml')).toString()
+  const yaml = YAML.parse(sourceContent)
+  for (const key of keys) {
+    labels[key] = yaml[key]
+  }
+  return labels
+}
+
+function patch (lang) {
+  const destLang = lang.replace('-', '_') // zh-Hans => zh_Hans
+  const destFile = lang === ''
+    ? path.resolve(converseDir, destLang, 'converse.pot')
+    : path.resolve(converseDir, destLang, 'LC_MESSAGES', 'converse.po')
+
+  console.log(`Patching ${lang}/${destLang}...`)
+  if (!fs.existsSync(destFile)) {
+    console.log(`File ${destFile} does not exist, skipping.`)
+    return
+  }
+
+  let yaml
+  if (lang === '') { // pot file, dont put translation
+    yaml = {}
+  } else {
+    const sourceContent = fs.readFileSync(path.resolve(livechatDir, lang + '.yml')).toString()
+    yaml = YAML.parse(sourceContent) ?? {}
+  }
+
+  const destContent = fs.readFileSync(destFile).toString().split(/\n/)
+
+  // FIXME: for a yet-to-understand reason, the first patched string in marked as fuzzy when ConverseJS compiles
+  // po files. So we insert an unecessary translation first...
+  patchLabel(destContent, 'Livechat', 'Livechat')
+
+  for (const key in labels) {
+    const label = labels[key]
+    patchLabel(destContent, label, yaml[key] ?? '')
+  }
+  fs.writeFileSync(destFile, destContent.join('\n'))
+}
+
+function patchLabel (fileLines, label, translation) {
+  // FIXME: here we are not escaping any string value, considering there is only text in concerned labels for now.
+  //  But we should...
+  const msgid = `msgid "${label}"`
+  const msgstr = `msgstr "${translation}"`
+  console.log(`  Patching ${msgid} => ${msgstr} ...`)
+  for (let i = 0; i < fileLines.length; i++) {
+    const line = fileLines[i]
+    if (line !== msgid) { continue }
+    console.log(`  Found ${msgid}`)
+    // FIXME: we consider there is only one msgstr... Should consider there could be multiple.
+    fileLines[i + 1] = msgstr
+    return
+  }
+
+  console.log(`  Did not found ${msgid}, adding at the end`)
+  fileLines.push(
+    '# livechat-specific label',
+    msgid,
+    msgstr,
+    ''
+  )
+}
+
+if (!fs.existsSync(livechatDir)) {
+  throw new Error('Missing livechat language dir')
+}
+if (!fs.existsSync(converseDir)) {
+  throw new Error('Missing ConverseJS language dir, are you really building it?')
+}
+
+patch('')
+const files = fs.readdirSync(livechatDir).filter(f => /\.yml$/.test(f))
+for (const file of files) {
+  const l = file.replace('.yml', '')
+  patch(l)
+}
diff --git a/conversejs/build-conversejs.sh b/conversejs/build-conversejs.sh
index df62608f..5e693ec9 100644
--- a/conversejs/build-conversejs.sh
+++ b/conversejs/build-conversejs.sh
@@ -79,6 +79,9 @@ echo "Adding the custom files..."
 cp -r "$src_dir/custom/" "$converse_build_dir/custom/"
 mv "$converse_build_dir/custom/webpack.livechat.js" "$converse_build_dir/"
 
+echo "Patching i18n files to add custom labels..."
+/bin/env node conversejs/build-conversejs-patch-i18n.js
+
 if [[ ! -d "$converse_build_dir/node_modules" ]]; then
   echo "Missing node_modules directory, seems we have to call the makefile..."
   cd "$converse_build_dir"