implement ui translations using gettext

this was horrible i don't like gettext anymore

16 files changed, 272 insertions, 17 deletions

diff --git a/bin/extract_strings b/bin/extract_strings
new file mode 100755
index 0000000..8893b0e
--- /dev/null
+++ b/bin/extract_strings
@@ -0,0 +1,3 @@
+#!/bin/sh
+cd "$(dirname "$0")"/.. || exit 1
+xgettext -L PHP **/*.php -d digitigrade --from-code=UTF-8 -o locale/digitigrade.pot --omit-header
diff --git a/index.php b/index.php
index 617dc0e..dafc999 100644
--- a/index.php
+++ b/index.php
@@ -11,4 +11,13 @@ function require_all_glob(string $pattern) {
 require_all_glob('routes/*.php');
 require_all_glob('misc/*.php');
 
+$lang = get_ui_language();
+header('Content-Language: ' . str_replace('_', '-', $lang));
+putenv("LANG=$lang");
+setlocale(LC_MESSAGES, $lang);
+
+bindtextdomain('digitigrade', __DIR__ . '/locale');
+bind_textdomain_codeset('digitigrade', 'UTF-8');
+textdomain('digitigrade');
+
 Digitigrade\Router::getInstance()->processRequest();
diff --git a/locale/digitigrade.pot b/locale/digitigrade.pot
new file mode 100644
index 0000000..5fe4841
--- /dev/null
+++ b/locale/digitigrade.pot
@@ -0,0 +1,62 @@
+#: templates/actor_profile.php:7
+#, php-format
+msgid "Joined on %s"
+msgstr ""
+
+#: templates/actor_profile.php:12
+msgid "Open remote profile page"
+msgstr ""
+
+#: templates/actor_profile.php:19
+msgid "This user hasn't written a bio yet."
+msgstr ""
+
+#: templates/actor_profile_page.php:14
+msgid "This user hasn't posted anything yet."
+msgstr ""
+
+#: templates/global_timeline.php:1
+msgid "Global timeline"
+msgstr ""
+
+#: templates/global_timeline.php:5
+msgid "This timeline shows all known public indexable notes."
+msgstr ""
+
+#: templates/interaction_button.php:4
+msgid "Like"
+msgstr ""
+
+#: templates/interaction_button.php:5
+msgid "Dislike"
+msgstr ""
+
+#: templates/interaction_button.php:6
+msgid "Reshare"
+msgstr ""
+
+#: templates/local_timeline.php:1
+msgid "Local timeline"
+msgstr ""
+
+#: templates/local_timeline.php:5
+msgid ""
+"This timeline shows all public indexable notes posted by users on this "
+"server."
+msgstr ""
+
+#: templates/placeholder_text.php:1
+msgid "There's nothing here."
+msgstr ""
+
+#: templates/skeleton.php:17
+msgid "Global"
+msgstr ""
+
+#: templates/skeleton.php:18
+msgid "Local"
+msgstr ""
+
+#: templates/skeleton.php:20
+msgid "Digitigrade"
+msgstr ""
diff --git a/locale/en_GB/LC_MESSAGES/digitigrade.mo b/locale/en_GB/LC_MESSAGES/digitigrade.mo
new file mode 100644
index 0000000..13b2645
--- /dev/null
+++ b/locale/en_GB/LC_MESSAGES/digitigrade.mo
diff --git a/locale/en_GB/LC_MESSAGES/digitigrade.po b/locale/en_GB/LC_MESSAGES/digitigrade.po
new file mode 100644
index 0000000..3c5d38a
--- /dev/null
+++ b/locale/en_GB/LC_MESSAGES/digitigrade.po
@@ -0,0 +1,77 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: \n"
+"POT-Creation-Date: \n"
+"PO-Revision-Date: \n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"Language: en_GB\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 3.5\n"
+
+#: templates/actor_profile.php:7
+#, php-format
+msgid "Joined on %s"
+msgstr "Joined on %s"
+
+#: templates/actor_profile.php:12
+msgid "Open remote profile page"
+msgstr "Open remote profile page"
+
+#: templates/actor_profile.php:19
+msgid "This user hasn't written a bio yet."
+msgstr "This user hasn't written a bio yet."
+
+#: templates/actor_profile_page.php:14
+msgid "This user hasn't posted anything yet."
+msgstr "This user hasn't posted anything yet."
+
+#: templates/global_timeline.php:1
+msgid "Global timeline"
+msgstr "Global timeline"
+
+#: templates/global_timeline.php:5
+msgid "This timeline shows all known public indexable notes."
+msgstr "This timeline shows all known public indexable notes."
+
+#: templates/interaction_button.php:4
+msgid "Like"
+msgstr "Like"
+
+#: templates/interaction_button.php:5
+msgid "Dislike"
+msgstr "Dislike"
+
+#: templates/interaction_button.php:6
+msgid "Reshare"
+msgstr "Reshare"
+
+#: templates/local_timeline.php:1
+msgid "Local timeline"
+msgstr "Local timeline"
+
+#: templates/local_timeline.php:5
+msgid ""
+"This timeline shows all public indexable notes posted by users on this "
+"server."
+msgstr ""
+"This timeline shows all public indexable notes posted by users on this "
+"server."
+
+#: templates/placeholder_text.php:1
+msgid "There's nothing here."
+msgstr "There's nothing here."
+
+#: templates/skeleton.php:17
+msgid "Global"
+msgstr "Global"
+
+#: templates/skeleton.php:18
+msgid "Local"
+msgstr "Local"
+
+#: templates/skeleton.php:20
+msgid "Digitigrade"
+msgstr "Digitigrade"
diff --git a/locale/fr_FR/LC_MESSAGES/digitigrade.mo b/locale/fr_FR/LC_MESSAGES/digitigrade.mo
new file mode 100644
index 0000000..7af445c
--- /dev/null
+++ b/locale/fr_FR/LC_MESSAGES/digitigrade.mo
diff --git a/locale/fr_FR/LC_MESSAGES/digitigrade.po b/locale/fr_FR/LC_MESSAGES/digitigrade.po
new file mode 100644
index 0000000..778f6b0
--- /dev/null
+++ b/locale/fr_FR/LC_MESSAGES/digitigrade.po
@@ -0,0 +1,75 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: \n"
+"POT-Creation-Date: \n"
+"PO-Revision-Date: \n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"Language: fr\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 3.5\n"
+
+#: templates/actor_profile.php:7
+#, php-format
+msgid "Joined on %s"
+msgstr "Inscrit le %s"
+
+#: templates/actor_profile.php:12
+msgid "Open remote profile page"
+msgstr ""
+
+#: templates/actor_profile.php:19
+msgid "This user hasn't written a bio yet."
+msgstr "Cet utilisateur n'a pas encore écrit de biographie."
+
+#: templates/actor_profile_page.php:14
+msgid "This user hasn't posted anything yet."
+msgstr "Cet utilisateur n'a encore rien publié."
+
+#: templates/global_timeline.php:1
+msgid "Global timeline"
+msgstr "Chronologie mondiale"
+
+#: templates/global_timeline.php:5
+msgid "This timeline shows all known public indexable notes."
+msgstr ""
+
+#: templates/interaction_button.php:4
+msgid "Like"
+msgstr ""
+
+#: templates/interaction_button.php:5
+msgid "Dislike"
+msgstr ""
+
+#: templates/interaction_button.php:6
+msgid "Reshare"
+msgstr ""
+
+#: templates/local_timeline.php:1
+msgid "Local timeline"
+msgstr "Chronologie locale"
+
+#: templates/local_timeline.php:5
+msgid ""
+"This timeline shows all public indexable notes posted by users on this "
+"server."
+msgstr ""
+
+#: templates/placeholder_text.php:1
+msgid "There's nothing here."
+msgstr "Il n'y a rien ici."
+
+#: templates/skeleton.php:17
+msgid "Global"
+msgstr "Mondiale"
+
+#: templates/skeleton.php:18
+msgid "Local"
+msgstr "Locale"
+
+#: templates/skeleton.php:20
+msgid "Digitigrade"
+msgstr "La Digitigrade 🇫🇷🇫🇷🇫🇷🇫🇷"
diff --git a/misc/get_ui_language.php b/misc/get_ui_language.php
new file mode 100644
index 0000000..b1305b3
--- /dev/null
+++ b/misc/get_ui_language.php
@@ -0,0 +1,29 @@
+<?php
+
+function get_ui_language(?array $possibleLanguages = null): string {
+    if ($possibleLanguages == null) {
+        $possibleLanguages = array_map(function ($path) {
+            $parts = explode('/', $path);
+            return $parts[count($parts) - 2];
+        }, glob(__DIR__ . '/../locale/*/LC_MESSAGES'));
+    }
+
+    if (!isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
+        return $possibleLanguages[0];
+    }
+
+    $accepts = array_map(
+        fn($spec) => str_replace('-', '_', explode(';', $spec)[0]),
+        explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE'])
+    );
+
+    foreach ($accepts as $alang) {
+        foreach ($possibleLanguages as $candidate) {
+            if (str_starts_with(strtolower($candidate), strtolower($alang))) {
+                return $candidate;
+            }
+        }
+    }
+
+    return $possibleLanguages[0];
+}
\ No newline at end of file
diff --git a/templates/actor_profile.php b/templates/actor_profile.php
index f721fc8..c5b86c4 100644
--- a/templates/actor_profile.php
+++ b/templates/actor_profile.php
@@ -4,18 +4,18 @@
         <div>
             <div class="displayName"><?= $actor->displayName ?></div>
             <div class="handle">@<?= $actor->getFullHandle() ?></div>
-            <div class="joinedDate">Joined on <?= $actor->created->format('Y-m-d') ?></div>
+            <div class="joinedDate"><?= sprintf(_('Joined on %s'), $actor->created->format('Y-m-d')) ?></div>
         </div>
         <div>
             <?php if (!$actor->isLocal): ?>
-                <a class="icon material-symbols-outlined" href="<?= $actor->homepage ?>" title="Open remote profile page"
-                    target="_blank">open_in_new</a>
+                <a class="icon material-symbols-outlined" href="<?= $actor->homepage ?>"
+                    title="<?= _('Open remote profile page') ?>" target="_blank">open_in_new</a>
             <?php endif; ?>
         </div>
     </div>
     <?php if (isset($actor->bio) && $actor->bio != '') { ?>
         <p class="bio"><?= $actor->bio ?></p>
     <?php } else {
-        call_template('placeholder_text', ['message' => "This user hasn't written a bio yet."]);
+        call_template('placeholder_text', ['message' => _("This user hasn't written a bio yet.")]);
     } ?>
 </div>
\ No newline at end of file
diff --git a/templates/actor_profile_page.php b/templates/actor_profile_page.php
index ffa94e3..bd60e2c 100644
--- a/templates/actor_profile_page.php
+++ b/templates/actor_profile_page.php
@@ -11,7 +11,7 @@ call_template('skeleton', [
     echo '<hr>';
     $notes = Note::findAllWithAuthor($actor, 50);
     if (count($notes) == 0) {
-        call_template('placeholder_text', ['message' => "This user hasn't posted anything yet."]);
+        call_template('placeholder_text', ['message' => _("This user hasn't posted anything yet.")]);
     }
     foreach ($notes as $n) {
         call_template('note', ['note' => $n]);
diff --git a/templates/global_timeline.php b/templates/global_timeline.php
index bf91df0..f8fca52 100644
--- a/templates/global_timeline.php
+++ b/templates/global_timeline.php
@@ -1,8 +1,8 @@
-<?php call_template('skeleton', ['pageTitle' => 'Global timeline'], function () {
+<?php call_template('skeleton', ['pageTitle' => _('Global timeline')], function () {
     global $notes;
     call_template('alertbox', [
         'variety' => 'info',
-        'message' => 'This timeline shows all known public indexable notes.'
+        'message' => _('This timeline shows all known public indexable notes.')
     ]);
     foreach ($notes as $n) {
         call_template('note', ['note' => $n]);
diff --git a/templates/interaction_button.php b/templates/interaction_button.php
index ed257df..40fe392 100644
--- a/templates/interaction_button.php
+++ b/templates/interaction_button.php
@@ -1,9 +1,9 @@
 <?php
 $active = $active ?? false;
 $tooltip = match ($action) {
-    'like' => 'Like',
-    'dislike' => 'Dislike',
-    'reshare' => 'Reshare'
+    'like' => _('Like'),
+    'dislike' => _('Dislike'),
+    'reshare' => _('Reshare')
 };
 $icon = match ($action) {
     'like' => 'favorite',
diff --git a/templates/local_timeline.php b/templates/local_timeline.php
index f93300a..ec894a9 100644
--- a/templates/local_timeline.php
+++ b/templates/local_timeline.php
@@ -1,8 +1,8 @@
-<?php call_template('skeleton', ['pageTitle' => 'Local timeline'], function () {
+<?php call_template('skeleton', ['pageTitle' => _('Local timeline')], function () {
     global $notes;
     call_template('alertbox', [
         'variety' => 'info',
-        'message' => 'This timeline shows all public indexable notes posted by users on this server.'
+        'message' => _('This timeline shows all public indexable notes posted by users on this server.')
     ]);
     foreach ($notes as $n) {
         call_template('note', ['note' => $n]);
diff --git a/templates/note.php b/templates/note.php
index 8887afb..83770aa 100644
--- a/templates/note.php
+++ b/templates/note.php
@@ -7,7 +7,7 @@
             <span class="authorName"><?= $note->author->displayName ?></span>
             <span class="authorHandle">@<?= $note->author->getFullHandle() ?></span>
             <a class="timestamp" href="/@/<?= $note->author->getFullHandle() ?>/note/<?= $note->id ?>">
-                <?=
+                <?= // TODO: localise
                     $note->created->format('Y-m-d \a\t H:i')
                     . (isset($note->modified) && $note->modified != $note->created
                         ? ' (edited ' . $note->modified->format('Y-m-d \a\t H:i') . ')'
diff --git a/templates/placeholder_text.php b/templates/placeholder_text.php
index b27e490..1f03ebc 100644
--- a/templates/placeholder_text.php
+++ b/templates/placeholder_text.php
@@ -1 +1 @@
-<p class="placeholder"><?= $message ?? "There's nothing here." ?></p>
\ No newline at end of file
+<p class="placeholder"><?= $message ?? _("There's nothing here.") ?></p>
\ No newline at end of file
diff --git a/templates/skeleton.php b/templates/skeleton.php
index 9cc4636..49e4386 100644
--- a/templates/skeleton.php
+++ b/templates/skeleton.php
@@ -14,10 +14,10 @@
     <header>
         <nav>
             <ul>
-                <li><a href="/feed/global">Global</a></li>
-                <li><a href="/feed/local">Local</a></li>
+                <li><a href="/feed/global"><?= _('Global') ?></a></li>
+                <li><a href="/feed/local"><?= _('Local') ?></a></li>
             </ul>
-            <span id="siteTitle">Digitigrade</span>
+            <span id="siteTitle"><?= _('Digitigrade') ?></span>
         </nav>
     </header>
     <main>