<?php
declare(strict_types=1);

require_once __DIR__ . '/service.php';

function market_management_mcp_token(array $env): string
{
    $token = env_value('MARKET_MCP_TOKEN', $env);
    if ($token === '') {
        throw new RuntimeException('MARKET_MCP_TOKEN ist nicht konfiguriert.');
    }
    return $token;
}

function market_management_mcp_authorize(array $env): string
{
    $header = (string) ($_SERVER['HTTP_AUTHORIZATION'] ?? '');
    if (!preg_match('/^Bearer\s+(.+)$/i', trim($header), $matches)) {
        throw new RuntimeException('Bearer-Token fehlt.');
    }

    $token = trim($matches[1]);
    $expected = market_management_mcp_token($env);
    if ($token === '' || !hash_equals($expected, $token)) {
        throw new RuntimeException('Bearer-Token ist ungültig.');
    }

    return 'bearer:' . hash('sha256', $token);
}

function market_management_mcp_tools(): array
{
    return [
        ['name' => 'market_management.search_markets', 'description' => 'Märkte suchen', 'inputSchema' => ['type' => 'object']],
        ['name' => 'market_management.get_market', 'description' => 'Markt mit Durchführungen lesen', 'inputSchema' => ['type' => 'object', 'required' => ['market_id']]],
        ['name' => 'market_management.create_market', 'description' => 'Markt mit bestehender Kategorie anlegen', 'inputSchema' => ['type' => 'object', 'required' => ['name', 'category_id']]],
        ['name' => 'market_management.update_market', 'description' => 'Markt ändern', 'inputSchema' => ['type' => 'object', 'required' => ['market_id']]],
        ['name' => 'market_management.archive_market', 'description' => 'Markt archivieren', 'inputSchema' => ['type' => 'object', 'required' => ['market_id']]],
        ['name' => 'market_management.reactivate_market', 'description' => 'Markt reaktivieren', 'inputSchema' => ['type' => 'object', 'required' => ['market_id']]],
        ['name' => 'market_management.list_categories', 'description' => 'Bestehende Kategorien lesen', 'inputSchema' => ['type' => 'object']],
        ['name' => 'market_management.create_occurrence', 'description' => 'Durchführung anlegen', 'inputSchema' => ['type' => 'object', 'required' => ['market_definition_id']]],
        ['name' => 'market_management.get_occurrence', 'description' => 'Durchführung mit Tagen lesen', 'inputSchema' => ['type' => 'object', 'required' => ['occurrence_id']]],
        ['name' => 'market_management.update_occurrence', 'description' => 'Durchführung ändern', 'inputSchema' => ['type' => 'object', 'required' => ['occurrence_id']]],
        ['name' => 'market_management.archive_occurrence', 'description' => 'Durchführung archivieren', 'inputSchema' => ['type' => 'object', 'required' => ['occurrence_id']]],
        ['name' => 'market_management.reactivate_occurrence', 'description' => 'Durchführung reaktivieren', 'inputSchema' => ['type' => 'object', 'required' => ['occurrence_id']]],
        ['name' => 'market_management.create_day', 'description' => 'Durchführungstag anlegen', 'inputSchema' => ['type' => 'object', 'required' => ['occurrence_id', 'date']]],
        ['name' => 'market_management.update_day', 'description' => 'Durchführungstag ändern', 'inputSchema' => ['type' => 'object', 'required' => ['day_id']]],
        ['name' => 'market_management.delete_day', 'description' => 'Durchführungstag entfernen', 'inputSchema' => ['type' => 'object', 'required' => ['day_id']]],
        ['name' => 'market_management.set_organizer', 'description' => 'Veranstalter einer Durchführung setzen', 'inputSchema' => ['type' => 'object', 'required' => ['occurrence_id', 'organization_contact_id', 'contact_person_id']]],
        ['name' => 'market_management.create_cost_item', 'description' => 'Kostenposition anlegen', 'inputSchema' => ['type' => 'object', 'required' => ['occurrence_id', 'cost_type', 'gross_amount', 'tax_status']]],
        ['name' => 'market_management.delete_cost_item', 'description' => 'Kostenposition entfernen', 'inputSchema' => ['type' => 'object', 'required' => ['cost_item_id']]],
    ];
}

function market_management_mcp_call(PDO $pdo, string $tool, array $arguments): array
{
    return match ($tool) {
        'market_management.search_markets' => market_management_search_markets($pdo, $arguments),
        'market_management.get_market' => market_management_get_market(
            $pdo,
            market_management_require_positive_id($arguments['market_id'] ?? null, 'market_id'),
            (bool) ($arguments['include_archived'] ?? false)
        ) ?? throw new RuntimeException('Markt nicht gefunden.'),
        'market_management.create_market' => market_management_create_market($pdo, $arguments),
        'market_management.update_market' => market_management_update_market(
            $pdo,
            market_management_require_positive_id($arguments['market_id'] ?? null, 'market_id'),
            $arguments
        ),
        'market_management.archive_market' => market_management_set_market_archive(
            $pdo,
            market_management_require_positive_id($arguments['market_id'] ?? null, 'market_id'),
            true
        ),
        'market_management.reactivate_market' => market_management_set_market_archive(
            $pdo,
            market_management_require_positive_id($arguments['market_id'] ?? null, 'market_id'),
            false
        ),
        'market_management.list_categories' => market_management_list_categories($pdo),
        'market_management.create_occurrence' => market_management_create_occurrence($pdo, $arguments),
        'market_management.get_occurrence' => market_management_get_occurrence(
            $pdo,
            market_management_require_positive_id($arguments['occurrence_id'] ?? null, 'occurrence_id'),
            (bool) ($arguments['include_archived'] ?? false)
        ) ?? throw new RuntimeException('Durchführung nicht gefunden.'),
        'market_management.update_occurrence' => market_management_update_occurrence(
            $pdo,
            market_management_require_positive_id($arguments['occurrence_id'] ?? null, 'occurrence_id'),
            $arguments
        ),
        'market_management.archive_occurrence' => market_management_set_occurrence_archive(
            $pdo,
            market_management_require_positive_id($arguments['occurrence_id'] ?? null, 'occurrence_id'),
            true
        ),
        'market_management.reactivate_occurrence' => market_management_set_occurrence_archive(
            $pdo,
            market_management_require_positive_id($arguments['occurrence_id'] ?? null, 'occurrence_id'),
            false
        ),
        'market_management.create_day' => market_management_create_day($pdo, $arguments),
        'market_management.update_day' => market_management_update_day(
            $pdo,
            market_management_require_positive_id($arguments['day_id'] ?? null, 'day_id'),
            $arguments
        ),
        'market_management.delete_day' => market_management_delete_day(
            $pdo,
            market_management_require_positive_id($arguments['day_id'] ?? null, 'day_id')
        ),
        'market_management.set_organizer' => market_management_set_organizer($pdo, $arguments),
        'market_management.create_cost_item' => market_management_create_cost_item($pdo, $arguments),
        'market_management.delete_cost_item' => market_management_delete_cost_item(
            $pdo,
            market_management_require_positive_id($arguments['cost_item_id'] ?? null, 'cost_item_id')
        ),
        default => throw new InvalidArgumentException('Unbekanntes MCP-Tool: ' . $tool),
    };
}