<?php
/*
 * prompts.php
 *
 * User/admin prompt administration page.
 *
 * Normal users:
 *   - manage personal prompts
 *   - copy global default prompts to their own prompts
 *
 * Admin users:
 *   - same as normal users
 *   - manage global default prompts
 */

require_once __DIR__ . '/auth.php';
require_once __DIR__ . '/header.php';
require_once __DIR__ . '/languagestore.php';
require_once __DIR__ . '/promptstore.php';
require_once __DIR__ . '/usersettings.php';

ini_set('display_errors', '1');
ini_set('display_startup_errors', '1');
ini_set('log_errors', '1');
error_reporting(E_ALL);

$DB_FILE = __DIR__ . '/data/racket-sandbox.sqlite';

$auth = new RacketSandboxAuth($DB_FILE);
$user = $auth->requireLoginHtml();

$store = new PromptStore($DB_FILE);
$languageStore = new LanguageStore($DB_FILE);
$userSettings = new UserSettingsStore($DB_FILE);

$message = '';
$error = '';

function h($s)
{
    return htmlspecialchars((string)$s, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
}

function t($key, $fallback = null)
{
    global $languageStore, $language;

    return $languageStore->translate($key, $language, $fallback);
}

function post_value($name, $default = '')
{
    return $_POST[$name] ?? $default;
}

function get_value($name, $default = '')
{
    return $_GET[$name] ?? $default;
}

function fmt_time($ts)
{
    if ($ts === null) {
        return '-';
    }

    return date('Y-m-d H:i:s', (int)$ts);
}

function prompt_to_array($prompt)
{
    return array(
        'id' => $prompt->id(),
        'name' => $prompt->name(),
        'language' => $prompt->language(),
        'content' => $prompt->content(),
        'default_key' => $prompt->defaultKey(),
        'is_default' => $prompt->isDefault(),
        'created_at' => $prompt->createdAt(),
        'updated_at' => $prompt->updatedAt(),
    );
}

function version_to_array($version)
{
    return array(
        'id' => $version->id(),
        'prompt_id' => $version->promptId(),
        'version_no' => $version->versionNo(),
        'name' => $version->name(),
        'language' => $version->language(),
        'content' => $version->content(),
        'note' => $version->note(),
        'created_at' => $version->createdAt(),
    );
}

function resolve_user_language($userSettings, $userId, $allowedLanguages)
{
    $language = isset($_GET['lang'])
        ? (string)$_GET['lang']
        : (string)$userSettings->get($userId, 'language', 'en');

    if (!in_array($language, $allowedLanguages, true)) {
        $language = 'en';
    }

    $userSettings->set($userId, 'language', $language);

    return $language;
}

$language = resolve_user_language(
    $userSettings,
    $user->id(),
    $store->supportedLanguages()
);

$languageStore->seedDefaults(array(
    'prompts.title' => array('en' => 'Prompt administration', 'nl' => 'Promptbeheer'),
    'prompts.back' => array('en' => 'Back to Racket sandbox', 'nl' => 'Terug naar Racket sandbox'),
    'prompts.your_prompts' => array('en' => 'Your prompts', 'nl' => 'Jouw prompts'),
    'prompts.default_admin' => array('en' => 'Default prompt administration', 'nl' => 'Standaardpromptbeheer'),
    'prompts.language' => array('en' => 'Language', 'nl' => 'Taal'),
    'prompts.available_defaults' => array('en' => 'Available default prompts', 'nl' => 'Beschikbare standaardprompts'),
    'prompts.default_admin_badge' => array('en' => 'Admin default prompts', 'nl' => 'Admin standaardprompts'),
    'prompts.default_admin_hint' => array(
        'en' => 'You are editing global default prompts. Users can copy these to their own prompts.',
        'nl' => 'Je bewerkt globale standaardprompts. Gebruikers kunnen deze naar hun eigen prompts kopieren.'
    ),
    'prompts.copy_all' => array('en' => 'Copy all', 'nl' => 'Alles kopieren'),
    'prompts.copy' => array('en' => 'copy', 'nl' => 'kopieer'),
    'prompts.delete' => array('en' => 'delete', 'nl' => 'verwijder'),
    'prompts.create_default' => array('en' => 'Create default prompt', 'nl' => 'Standaardprompt maken'),
    'prompts.create_personal' => array('en' => 'Create personal prompt', 'nl' => 'Persoonlijke prompt maken'),
    'prompts.name' => array('en' => 'Name', 'nl' => 'Naam'),
    'prompts.default_key' => array('en' => 'Default key', 'nl' => 'Standaardsleutel'),
    'prompts.prompt_content' => array('en' => 'Prompt content', 'nl' => 'Promptinhoud'),
    'prompts.no_defaults' => array('en' => 'No default prompts for this language yet.', 'nl' => 'Nog geen standaardprompts voor deze taal.'),
    'prompts.no_personal' => array('en' => 'No personal prompts yet for this language.', 'nl' => 'Nog geen persoonlijke prompts voor deze taal.'),
    'prompts.select_prompt' => array('en' => 'Select a prompt on the left to view it.', 'nl' => 'Selecteer links een prompt om deze te bekijken.'),
    'prompts.edit' => array('en' => 'Edit', 'nl' => 'Bewerk'),
    'prompts.close' => array('en' => 'Close', 'nl' => 'Sluiten'),
    'prompts.newer_previous' => array('en' => 'newer previous version', 'nl' => 'nieuwere vorige versie'),
    'prompts.older_previous' => array('en' => 'older previous version', 'nl' => 'oudere vorige versie'),
    'prompts.diff_view' => array('en' => 'Diff view:', 'nl' => 'Verschilweergave:'),
    'prompts.diff_plain' => array('en' => 'text, no diff', 'nl' => 'tekst, geen verschil'),
    'prompts.diff_all' => array('en' => 'all diff', 'nl' => 'alle verschillen'),
    'prompts.diff_same' => array('en' => 'unchanged only', 'nl' => 'alleen ongewijzigd'),
    'prompts.diff_added' => array('en' => 'additions only', 'nl' => 'alleen toevoegingen'),
    'prompts.diff_deleted' => array('en' => 'deletions only', 'nl' => 'alleen verwijderingen'),
    'prompts.diff_changed' => array('en' => 'changes only', 'nl' => 'alleen wijzigingen'),
    'prompts.previous_version' => array('en' => 'Previous version', 'nl' => 'Vorige versie'),
    'prompts.store_version' => array('en' => 'store this edit as a new version', 'nl' => 'bewaar deze bewerking als nieuwe versie'),
    'prompts.version_note' => array('en' => 'Version note:', 'nl' => 'Versienotitie:'),
    'prompts.save' => array('en' => 'Save', 'nl' => 'Opslaan'),
    'prompts.store_snapshot' => array('en' => 'Store snapshot', 'nl' => 'Snapshot bewaren'),
    'prompts.restore_version' => array('en' => 'Restore selected version', 'nl' => 'Geselecteerde versie herstellen'),
    'prompts.delete_version' => array('en' => 'Delete selected version', 'nl' => 'Geselecteerde versie verwijderen'),
    'prompts.prompt' => array('en' => 'Prompt', 'nl' => 'Prompt'),
    'prompts.prompt_not_found' => array('en' => 'Prompt not found', 'nl' => 'Prompt niet gevonden'),
    'prompts.no_previous_versions' => array('en' => 'No previous versions stored.', 'nl' => 'Geen vorige versies opgeslagen.'),
    'prompts.no_lines_for_view' => array('en' => 'No lines for this view.', 'nl' => 'Geen regels voor deze weergave.'),
    'prompts.restore_version_confirm' => array('en' => 'Restore version', 'nl' => 'Versie herstellen'),
    'prompts.delete_version_confirm' => array('en' => 'Delete version', 'nl' => 'Versie verwijderen'),
    'prompts.delete_default_confirm' => array('en' => 'Delete default prompt', 'nl' => 'Standaardprompt verwijderen'),
    'prompts.delete_prompt_confirm' => array('en' => 'Delete prompt', 'nl' => 'Prompt verwijderen'),
    'prompts.default_prompt_prefix' => array('en' => 'Default prompt: ', 'nl' => 'Standaardprompt: '),
    'prompts.prompt_prefix' => array('en' => 'Prompt: ', 'nl' => 'Prompt: '),
    'prompts.created' => array('en' => 'created', 'nl' => 'gemaakt'),
    'prompts.updated' => array('en' => 'updated', 'nl' => 'bijgewerkt'),
    'prompts.default_prompt' => array('en' => 'default prompt', 'nl' => 'standaardprompt'),
    'prompts.version' => array('en' => 'version', 'nl' => 'versie'),
    'prompts.showing_version' => array('en' => 'showing version', 'nl' => 'toont versie'),
    'prompts.of' => array('en' => 'of', 'nl' => 'van'),
    'prompts.old' => array('en' => 'old', 'nl' => 'oud'),
    'prompts.new' => array('en' => 'new', 'nl' => 'nieuw'),
    'app.admin' => array('en' => 'admin', 'nl' => 'admin'),
    'app.user_management' => array('en' => 'User management', 'nl' => 'Gebruikersbeheer'),
    'app.configuration' => array('en' => 'Configuration', 'nl' => 'Configuratie'),
    'app.logout' => array('en' => 'Logout', 'nl' => 'Uitloggen'),
));

$mode = get_value('mode', 'personal');

if ($mode !== 'personal' && $mode !== 'defaults') {
    $mode = 'personal';
}

if ($mode === 'defaults' && !$user->isAdmin()) {
    $mode = 'personal';
}

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $action = post_value('action');

    try {
        /*
         * User actions.
         */
        if ($action === 'logout') {
            $auth->logout();
            header('Location: /login.php');
            exit;
        } elseif ($action === 'copy_all_defaults') {
            $language = post_value('language', 'en');
            $created = $store->copyAllDefaultsToUser($user->id(), $language);
            $message = 'Default prompts copied to your prompts: ' . $created;
            $mode = 'personal';
        } elseif ($action === 'copy_default') {
            $defaultId = (int)post_value('default_id');
            $store->copyDefaultPromptToUser($user->id(), $defaultId);
            $message = 'Default prompt copied to your prompts.';
            $mode = 'personal';
        } elseif ($action === 'create_prompt') {
            $language = post_value('language', 'en');

            $store->createPrompt(
                $user->id(),
                post_value('name'),
                $language,
                post_value('content')
            );

            $message = 'Prompt created.';
            $mode = 'personal';
        } elseif ($action === 'update_prompt') {
            $promptId = (int)post_value('prompt_id');
            $language = post_value('language', 'en');

            $store->updatePrompt(
                $user->id(),
                $promptId,
                post_value('name'),
                $language,
                post_value('content'),
                isset($_POST['create_version']),
                post_value('version_note')
            );

            $message = 'Prompt updated.';
            $mode = 'personal';
        } elseif ($action === 'create_version') {
            $promptId = (int)post_value('prompt_id');
            $store->createVersion($user->id(), $promptId, post_value('version_note'));
            $message = 'Version stored.';
            $mode = 'personal';
        } elseif ($action === 'restore_version') {
            $promptId = (int)post_value('prompt_id');
            $versionNo = (int)post_value('version_no');
            $store->restoreVersion($user->id(), $promptId, $versionNo);
            $message = 'Version restored.';
            $mode = 'personal';
        } elseif ($action === 'delete_version') {
            $promptId = (int)post_value('prompt_id');
            $versionNo = (int)post_value('version_no');
            $store->deleteVersion($user->id(), $promptId, $versionNo);
            $message = 'Version deleted.';
            $mode = 'personal';
        } elseif ($action === 'delete_prompt') {
            $promptId = (int)post_value('prompt_id');
            $store->deletePrompt($user->id(), $promptId);
            $message = 'Prompt deleted.';
            $mode = 'personal';
        }

        /*
         * Admin-only default prompt actions.
         */
        elseif ($action === 'create_default' ||
                $action === 'update_default' ||
                $action === 'create_default_version' ||
                $action === 'restore_default_version' ||
                $action === 'delete_default_version' ||
                $action === 'delete_default') {

            if (!$user->isAdmin()) {
                throw new Exception('Admin rights required.');
            }

            $mode = 'defaults';

            if ($action === 'create_default') {
                $language = post_value('language', 'en');

                $store->createDefaultPrompt(
                    post_value('default_key'),
                    post_value('name'),
                    $language,
                    post_value('content')
                );

                $message = 'Default prompt created.';
            } elseif ($action === 'update_default') {
                $defaultId = (int)post_value('default_id');
                $language = post_value('language', 'en');

                $store->updateDefaultPrompt(
                    $defaultId,
                    post_value('default_key'),
                    post_value('name'),
                    $language,
                    post_value('content'),
                    isset($_POST['create_version']),
                    post_value('version_note')
                );

                $message = 'Default prompt updated.';
            } elseif ($action === 'create_default_version') {
                $defaultId = (int)post_value('default_id');
                $store->createDefaultVersion($defaultId, post_value('version_note'));
                $message = 'Default prompt version stored.';
            } elseif ($action === 'restore_default_version') {
                $defaultId = (int)post_value('default_id');
                $versionNo = (int)post_value('version_no');
                $store->restoreDefaultVersion($defaultId, $versionNo);
                $message = 'Default prompt version restored.';
            } elseif ($action === 'delete_default_version') {
                $defaultId = (int)post_value('default_id');
                $versionNo = (int)post_value('version_no');
                $store->deleteDefaultVersion($defaultId, $versionNo);
                $message = 'Default prompt version deleted.';
            } elseif ($action === 'delete_default') {
                $defaultId = (int)post_value('default_id');
                $store->deleteDefaultPrompt($defaultId);
                $message = 'Default prompt deleted.';
            }
        } elseif ($action !== '') {
            throw new Exception('Unknown action: ' . $action);
        }
    } catch (Throwable $e) {
        $error = $e->getMessage();
    }
}

$personalPrompts = $store->listPrompts($user->id(), $language);
$defaultPrompts = $store->listDefaultPrompts($language);

/*
 * Full prompt data for the modal editor.
 */
$allPersonalPrompts = $store->listPrompts($user->id(), null);
$allDefaultPrompts = $store->listDefaultPrompts(null);

$promptData = array(
    'personal' => array(),
    'default' => array(),
    'can_edit_defaults' => $user->isAdmin(),
);

foreach ($allPersonalPrompts as $p) {
    $promptData['personal'][$p->id()] = prompt_to_array($p);
    $promptData['personal'][$p->id()]['versions'] = array();

    foreach ($store->listVersions($user->id(), $p->id()) as $v) {
        $promptData['personal'][$p->id()]['versions'][] = version_to_array($v);
    }
}

foreach ($allDefaultPrompts as $p) {
    $promptData['default'][$p->id()] = prompt_to_array($p);
    $promptData['default'][$p->id()]['versions'] = array();

    if ($user->isAdmin()) {
        foreach ($store->listDefaultVersions($p->id()) as $v) {
            $promptData['default'][$p->id()]['versions'][] = version_to_array($v);
        }
    }
}

$headerLanguages = array();

foreach ($store->supportedLanguages() as $lang) {
    $headerLanguages[$lang] = $store->languageLabel($lang);
}

$headerNavItems = array(
    array(
        'label' => t('prompts.back', 'Back to Racket sandbox'),
        'url' => '/',
    ),
);

if ($user->isAdmin()) {
    $headerNavItems[] = array(
        'label' => t('app.user_management', 'User management'),
        'url' => '/users?lang=' . rawurlencode($language),
        'separator_before' => true,
    );
    $headerNavItems[] = array(
        'label' => t('app.configuration', 'Configuration'),
        'url' => '/admin-config?lang=' . rawurlencode($language),
        'separator_before' => true,
    );
}

$styleVersion = @filemtime(__DIR__ . '/styles.css') ?: time();
$promptEditorVersion = @filemtime(__DIR__ . '/prompt-editor.js') ?: time();

header('Content-Type: text/html; charset=utf-8');
?>
<!doctype html>
<html lang="<?= h($language) ?>">
<head>
<meta charset="utf-8">
<title><?= h(t('prompts.title', 'Prompt administration')) ?></title>
<link rel="stylesheet" href="/styles.css?v=<?= h($styleVersion) ?>">
</head>
<body>

<div class="page">

<?php
render_app_header(array(
    'title' => t('prompts.title', 'Prompt administration'),
    'nav_items' => $headerNavItems,
    'user' => $user,
    'admin_label' => t('app.admin', 'admin'),
    'language_label' => t('prompts.language', 'Language'),
    'language' => $language,
    'languages' => $headerLanguages,
    'language_action' => '/prompts',
    'language_hidden' => array('mode' => $mode),
    'logout_action' => '/prompts?lang=' . rawurlencode($language) . '&mode=' . rawurlencode($mode),
    'logout_label' => t('app.logout', 'Logout'),
    'message' => $message,
    'error' => $error,
));
?>

<main class="page-main prompt-workbench">

<aside class="prompt-sidebar panel">
<div class="prompt-tabs" role="tablist" aria-label="Prompt lists">
<button type="button" class="prompt-tab <?= $mode === 'defaults' ? 'active' : '' ?>" data-tab="defaults" role="tab" aria-selected="<?= $mode === 'defaults' ? 'true' : 'false' ?>">
<?= h(t('prompts.available_defaults', 'Available default prompts')) ?>
</button>
<button type="button" class="prompt-tab <?= $mode !== 'defaults' ? 'active' : '' ?>" data-tab="personal" role="tab" aria-selected="<?= $mode !== 'defaults' ? 'true' : 'false' ?>">
<?= h(t('prompts.your_prompts', 'Your prompts')) ?>
</button>
</div>

<section class="prompt-tab-panel <?= $mode === 'defaults' ? 'active' : '' ?>" id="tab-defaults" role="tabpanel">
<?php if ($user->isAdmin()): ?>
<div class="default-admin-notice">
<strong><?= h(t('prompts.default_admin_badge', 'Admin default prompts')) ?></strong>
<span><?= h(t('prompts.default_admin_hint', 'You are editing global default prompts. Users can copy these to their own prompts.')) ?></span>
</div>
<?php endif; ?>

<div class="sidebar-actions">
<form method="post" action="/prompts?lang=<?= h($language) ?>&mode=personal">
<input type="hidden" name="action" value="copy_all_defaults">
<input type="hidden" name="language" value="<?= h($language) ?>">
<button type="submit"><?= h(t('prompts.copy_all', 'Copy all')) ?></button>
</form>
</div>

<div class="prompt-list">
<?php foreach ($defaultPrompts as $default): ?>
<div class="prompt-list-item default-prompt-item">
<button type="button"
        class="prompt-select js-open-prompt"
        data-kind="default"
        data-id="<?= h($default->id()) ?>">
<span class="prompt-name"><?= h($default->name()) ?></span>
<span class="prompt-subline"><code><?= h($default->defaultKey()) ?></code> · <?= h(fmt_time($default->updatedAt())) ?></span>
</button>

<form method="post" action="/prompts?lang=<?= h($language) ?>&mode=personal">
<input type="hidden" name="action" value="copy_default">
<input type="hidden" name="default_id" value="<?= h($default->id()) ?>">
<button type="submit"><?= h(t('prompts.copy', 'copy')) ?></button>
</form>

<?php if ($user->isAdmin()): ?>
<form method="post" action="/prompts?lang=<?= h($language) ?>&mode=defaults"
      onsubmit="return confirm('<?= h(t('prompts.delete_default_confirm', 'Delete default prompt')) ?> <?= h($default->name()) ?>?');">
<input type="hidden" name="action" value="delete_default">
<input type="hidden" name="default_id" value="<?= h($default->id()) ?>">
<button type="submit"><?= h(t('prompts.delete', 'delete')) ?></button>
</form>
<?php endif; ?>
</div>
<?php endforeach; ?>

<?php if (count($defaultPrompts) === 0): ?>
<p class="empty-state"><?= h(t('prompts.no_defaults', 'No default prompts for this language yet.')) ?></p>
<?php endif; ?>
</div>

<?php if ($user->isAdmin()): ?>
<details class="create-drawer">
<summary><?= h(t('prompts.create_default', 'Create default prompt')) ?></summary>
<form method="post" action="/prompts?lang=<?= h($language) ?>&mode=defaults">
<input type="hidden" name="action" value="create_default">
<label><?= h(t('prompts.default_key', 'Default key')) ?><br><input type="text" name="default_key" placeholder="bootstrap-racket"></label>
<label><?= h(t('prompts.name', 'Name')) ?><br><input type="text" name="name"></label>
<label><?= h(t('prompts.language', 'Language')) ?><br>
<select name="language">
<?php foreach ($store->supportedLanguages() as $lang): ?>
<option value="<?= h($lang) ?>" <?= $lang === $language ? 'selected' : '' ?>>
<?= h($store->languageLabel($lang)) ?>
</option>
<?php endforeach; ?>
</select>
</label>
<label><?= h(t('prompts.prompt_content', 'Prompt content')) ?><br><textarea name="content" rows="7"></textarea></label>
<button type="submit"><?= h(t('prompts.create_default', 'Create default prompt')) ?></button>
</form>
</details>
<?php endif; ?>
</section>

<section class="prompt-tab-panel <?= $mode !== 'defaults' ? 'active' : '' ?>" id="tab-personal" role="tabpanel">
<div class="prompt-list">
<?php foreach ($personalPrompts as $prompt): ?>
<div class="prompt-list-item">
<button type="button"
        class="prompt-select js-open-prompt"
        data-kind="personal"
        data-id="<?= h($prompt->id()) ?>">
<span class="prompt-name"><?= h($prompt->name()) ?></span>
<span class="prompt-subline"><?= h($store->languageLabel($prompt->language())) ?> · <?= h(fmt_time($prompt->updatedAt())) ?></span>
</button>
<form method="post" action="/prompts?lang=<?= h($language) ?>&mode=personal"
      onsubmit="return confirm('<?= h(t('prompts.delete_prompt_confirm', 'Delete prompt')) ?> <?= h($prompt->name()) ?>?');">
<input type="hidden" name="action" value="delete_prompt">
<input type="hidden" name="prompt_id" value="<?= h($prompt->id()) ?>">
<button type="submit"><?= h(t('prompts.delete', 'delete')) ?></button>
</form>
</div>
<?php endforeach; ?>

<?php if (count($personalPrompts) === 0): ?>
<p class="empty-state"><?= h(t('prompts.no_personal', 'No personal prompts yet for this language.')) ?></p>
<?php endif; ?>
</div>

<details class="create-drawer">
<summary><?= h(t('prompts.create_personal', 'Create personal prompt')) ?></summary>
<form method="post" action="/prompts?lang=<?= h($language) ?>&mode=personal">
<input type="hidden" name="action" value="create_prompt">
<label><?= h(t('prompts.name', 'Name')) ?><br><input type="text" name="name"></label>
<label><?= h(t('prompts.language', 'Language')) ?><br>
<select name="language">
<?php foreach ($store->supportedLanguages() as $lang): ?>
<option value="<?= h($lang) ?>" <?= $lang === $language ? 'selected' : '' ?>>
<?= h($store->languageLabel($lang)) ?>
</option>
<?php endforeach; ?>
</select>
</label>
<label><?= h(t('prompts.prompt_content', 'Prompt content')) ?><br><textarea name="content" rows="7"></textarea></label>
<button type="submit"><?= h(t('prompts.create_personal', 'Create prompt')) ?></button>
</form>
</details>
</section>
</aside>

<section id="promptViewer" class="prompt-viewer panel is-empty">
<div class="viewer-empty">
<?= h(t('prompts.select_prompt', 'Select a prompt on the left to view it.')) ?>
</div>

<div class="viewer-shell">
<div class="viewer-header">
<div>
<div class="viewer-title" id="viewerTitle"><?= h(t('prompts.prompt', 'Prompt')) ?></div>
<div class="version-meta" id="viewerMeta"></div>
</div>
<button type="button" id="editPromptButton"><?= h(t('prompts.edit', 'Edit')) ?></button>
</div>
<pre id="viewerContent" class="viewer-content"></pre>
</div>
</section>

</main>

<footer class="page-footer">
<a href="/"><?= h(t('prompts.back', 'Back to Racket sandbox')) ?></a>
</footer>

</div>

<div id="promptModalBackdrop" class="modal-backdrop">
<div class="prompt-modal">

<form id="promptModalForm" class="edit-mode" method="post" action="/prompts?lang=<?= h($language) ?>&mode=<?= h($mode) ?>">

<div class="modal-header">
<div>
<div class="modal-title" id="modalTitle"><?= h(t('prompts.prompt', 'Prompt')) ?></div>
<div class="version-meta" id="modalMeta"></div>
</div>
<button type="button" id="cancelEditButton"><?= h(t('prompts.close', 'Close')) ?></button>
</div>

<div class="modal-toolbar">
<button type="button" id="versionNewerButton"><?= h(t('prompts.newer_previous', 'newer previous version')) ?></button>
<button type="button" id="versionOlderButton"><?= h(t('prompts.older_previous', 'older previous version')) ?></button>

<label>
<?= h(t('prompts.diff_view', 'Diff view:')) ?>
<select id="diffMode">
<option value="plain"><?= h(t('prompts.diff_plain', 'text, no diff')) ?></option>
<option value="all" selected><?= h(t('prompts.diff_all', 'all diff')) ?></option>
<option value="same"><?= h(t('prompts.diff_same', 'unchanged only')) ?></option>
<option value="added"><?= h(t('prompts.diff_added', 'additions only')) ?></option>
<option value="deleted"><?= h(t('prompts.diff_deleted', 'deletions only')) ?></option>
<option value="changed"><?= h(t('prompts.diff_changed', 'changes only')) ?></option>
</select>
</label>

<span id="versionIndicator" class="version-meta"></span>
</div>

<div class="modal-body">

<div class="edit-pane">
<div class="modal-form-grid">
<label>
<?= h(t('prompts.name', 'Name')) ?><br>
<input type="text" id="modalName" name="name">
</label>

<label>
<?= h(t('prompts.language', 'Language')) ?><br>
<select id="modalLanguage" name="language">
<?php foreach ($store->supportedLanguages() as $lang): ?>
<option value="<?= h($lang) ?>"><?= h($store->languageLabel($lang)) ?></option>
<?php endforeach; ?>
</select>
</label>
</div>

<div id="defaultKeyRow" class="default-key-row">
<label>
<?= h(t('prompts.default_key', 'Default key')) ?><br>
<input type="text" id="modalDefaultKey" name="default_key">
</label>
</div>

<label class="content-label">
<span><?= h(t('prompts.prompt_content', 'Prompt content')) ?></span>
<textarea id="modalContent" name="content"></textarea>
</label>
</div>

<div class="version-pane">
<div>
<strong><?= h(t('prompts.previous_version', 'Previous version')) ?></strong>
<div id="selectedVersionMeta" class="version-meta"></div>
</div>

<div class="version-content" id="versionContent"></div>
</div>

</div>

<div class="modal-footer">
<input type="hidden" id="modalAction" name="action" value="">
<input type="hidden" id="modalPromptId" name="prompt_id" value="">
<input type="hidden" id="modalDefaultId" name="default_id" value="">

<label>
<input type="checkbox" name="create_version" value="1" checked>
<?= h(t('prompts.store_version', 'store this edit as a new version')) ?>
</label>

<label>
<?= h(t('prompts.version_note', 'Version note:')) ?>
<input type="text" name="version_note" value="editor edit">
</label>

<button type="submit"><?= h(t('prompts.save', 'Save')) ?></button>
<button type="button" id="snapshotButton"><?= h(t('prompts.store_snapshot', 'Store snapshot')) ?></button>
<button type="button" id="restoreVersionButton"><?= h(t('prompts.restore_version', 'Restore selected version')) ?></button>
<button type="button" id="deleteVersionButton"><?= h(t('prompts.delete_version', 'Delete selected version')) ?></button>
</div>

</form>

</div>
</div>

<form id="modalAuxForm" method="post" action="/prompts?lang=<?= h($language) ?>&mode=<?= h($mode) ?>" class="hidden">
<input type="hidden" id="auxAction" name="action" value="">
<input type="hidden" id="auxPromptId" name="prompt_id" value="">
<input type="hidden" id="auxDefaultId" name="default_id" value="">
<input type="hidden" id="auxVersionNo" name="version_no" value="">
<input type="hidden" id="auxVersionNote" name="version_note" value="">
</form>

<script type="application/json" id="promptDataJson">
<?= json_encode($promptData, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) ?>
</script>
<script type="application/json" id="promptTextJson">
<?= json_encode(array(
    'prompt_not_found' => t('prompts.prompt_not_found', 'Prompt not found'),
    'no_previous_versions' => t('prompts.no_previous_versions', 'No previous versions stored.'),
    'no_lines_for_view' => t('prompts.no_lines_for_view', 'No lines for this view.'),
    'restore_version_confirm' => t('prompts.restore_version_confirm', 'Restore version'),
    'delete_version_confirm' => t('prompts.delete_version_confirm', 'Delete version'),
    'default_prompt_prefix' => t('prompts.default_prompt_prefix', 'Default prompt: '),
    'prompt_prefix' => t('prompts.prompt_prefix', 'Prompt: '),
    'created' => t('prompts.created', 'created'),
    'updated' => t('prompts.updated', 'updated'),
    'default_prompt' => t('prompts.default_prompt', 'default prompt'),
    'version' => t('prompts.version', 'version'),
    'showing_version' => t('prompts.showing_version', 'showing version'),
    'of' => t('prompts.of', 'of'),
    'old' => t('prompts.old', 'old'),
    'new' => t('prompts.new', 'new'),
), JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) ?>
</script>
<script src="/prompt-editor.js?v=<?= h($promptEditorVersion) ?>" defer></script>

</body>
</html>