#!/usr/bin/env php
<?php

/**
 * Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * FILE INFORMATION
 * DEFGROUP: moko-platform.Enterprise
 * INGROUP: moko-platform
 * REPO: https://git.mokoconsulting.tech/MokoConsulting/moko-platform
 * PATH: /lib/Enterprise/ManifestReader.php
 * BRIEF: Read and parse .mokogitea/manifest.xml — shared across all CLI tools
 */

declare(strict_types=1);

namespace MokoEnterprise;

/**
 * Manifest Reader
 *
 * Parses .mokogitea/manifest.xml and provides typed access to all fields.
 * Used by CLI tools and the Enterprise library to determine platform,
 * build configuration, and deployment settings from the repository manifest.
 *
 * @since 09.01.00
 */
class ManifestReader
{
    /** @var array<string, string> Parsed manifest fields */
    private array $fields = [];

    /** @var bool Whether a manifest was found and parsed */
    private bool $loaded = false;

    /**
     * Load manifest from a repository root directory.
     *
     * @param string $root Repository root path
     * @return self
     */
    public static function fromPath(string $root): self
    {
        $reader = new self();
        $reader->load($root);
        return $reader;
    }

    /**
     * Load and parse the manifest file.
     *
     * @param string $root Repository root path
     */
    public function load(string $root): void
    {
        $candidates = [
            "{$root}/.mokogitea/manifest.xml",
            "{$root}/.mokogitea/.manifest.xml",
            "{$root}/.mokogitea/.moko-platform",
        ];

        $manifestFile = null;
        foreach ($candidates as $candidate) {
            if (file_exists($candidate)) {
                $manifestFile = $candidate;
                break;
            }
        }

        if ($manifestFile === null) {
            return;
        }

        $xml = @simplexml_load_file($manifestFile);
        if ($xml === false) {
            // Fallback: YAML legacy format
            $content = file_get_contents($manifestFile);
            if (preg_match('/^platform:\s*(.+)/m', $content, $m)) {
                $this->fields['platform'] = trim($m[1], " \t\n\r\"'");
            }
            $this->loaded = true;
            return;
        }

        $this->fields = [
            'name'              => (string)($xml->identity->name ?? ''),
            'org'               => (string)($xml->identity->org ?? ''),
            'description'       => (string)($xml->identity->description ?? ''),
            'license'           => (string)($xml->identity->license ?? ''),
            'license-spdx'      => (string)($xml->identity->license['spdx'] ?? ''),
            'version'           => (string)($xml->identity->version ?? ''),
            'platform'          => (string)($xml->governance->platform ?? ''),
            'standards-version' => (string)($xml->governance->{"standards-version"} ?? ''),
            'language'          => (string)($xml->build->language ?? ''),
            'package-type'      => (string)($xml->build->{"package-type"} ?? ''),
            'entry-point'       => (string)($xml->build->{"entry-point"} ?? ''),
            'source-dir'        => (string)($xml->deploy->{"source-dir"} ?? ''),
            'remote-subdir'     => (string)($xml->deploy->{"remote-subdir"} ?? ''),
            'dev-host'          => (string)($xml->deploy->{"dev-host"} ?? ''),
            'demo-host'         => (string)($xml->deploy->{"demo-host"} ?? ''),
        ];

        // Strip empty values
        $this->fields = array_filter($this->fields, fn($v) => $v !== '');
        $this->loaded = true;
    }

    /**
     * Whether a manifest was found and loaded.
     *
     * @return bool
     */
    public function isLoaded(): bool
    {
        return $this->loaded;
    }

    /**
     * Get a single field value.
     *
     * @param string $key Field name (e.g. 'platform', 'package-type')
     * @param string $default Default value if field is missing
     * @return string
     */
    public function get(string $key, string $default = ''): string
    {
        return $this->fields[$key] ?? $default;
    }

    /**
     * Get the platform slug, normalized to canonical values.
     *
     * @return string One of: joomla, dolibarr, generic, mcp, nodejs
     */
    public function getPlatform(): string
    {
        $raw = $this->get('platform', 'generic');
        return match ($raw) {
            'waas-component' => 'joomla',
            'crm-module' => 'dolibarr',
            default => $raw,
        };
    }

    /**
     * Get the source/entry-point directory.
     *
     * Fallback chain: manifest entry-point → source/ → src/ → htdocs/ → 'source'.
     * Uses SourceResolver for the directory fallback when no entry-point is set.
     *
     * @param string $root Repository root for existence checking
     * @return string Resolved source directory path (e.g. 'source', 'src', 'htdocs')
     */
    public function getSourceDir(string $root = ''): string
    {
        $entryPoint = $this->get('entry-point', '');
        if ($entryPoint !== '') {
            // Strip trailing filename (e.g. source/index.ts → source)
            $dir = rtrim(dirname($entryPoint) === '.' ? $entryPoint : dirname($entryPoint), '/');
            if ($root === '' || is_dir("{$root}/{$dir}")) {
                return $dir;
            }
        }

        // Fallback: use SourceResolver (source/ → src/ → htdocs/ → default 'source')
        if ($root !== '') {
            return SourceResolver::resolve($root);
        }

        return 'source';
    }

    /**
     * Get the package type for build decisions.
     *
     * @return string e.g. 'package', 'dolibarr', 'generic', 'mcp-server'
     */
    public function getPackageType(): string
    {
        return $this->get('package-type', 'generic');
    }

    /**
     * Get all parsed fields.
     *
     * @return array<string, string>
     */
    public function getAll(): array
    {
        return $this->fields;
    }
}