import { Logger } from '../logger.js';
import { withDefaultConfig } from '../utils/defaults.js';
import { getConfigFilePath, getRuntimePaths } from '../utils/path.js';
import { overwriteMerge } from '../utils/merge.js';
import { loadJSON } from '../utils/file.js';
export class ConfigParser {
    /**
     * Get runtime config
     * @param runtimePaths
     * @returns
     */
    async getRuntimeConfig(runtimePaths) {
        const exportMarkerConfig = await loadJSON(runtimePaths.EXPORT_MARKER, false).catch((err) => {
            Logger.noExportMarker();
            throw err;
        });
        return {
            trailingSlash: exportMarkerConfig?.exportTrailingSlash,
        };
    }
    /**
     * Update existing config with runtime config
     * @param config
     * @param runtimePaths
     * @returns
     */
    async withRuntimeConfig(config, runtimePaths) {
        // Runtime configs
        const runtimeConfig = await this.getRuntimeConfig(runtimePaths);
        // Prioritize `trailingSlash` value from `next-sitemap.js`
        const trailingSlashConfig = {};
        if ('trailingSlash' in config) {
            trailingSlashConfig.trailingSlash = config?.trailingSlash;
        }
        return overwriteMerge(config, runtimeConfig, trailingSlashConfig);
    }
    /**
     * Load next-sitemap.config.js as module
     * @returns
     */
    async loadBaseConfig() {
        // Get config file path
        const path = await getConfigFilePath();
        // Config loading message
        Logger.log('✨', `Loading next-sitemap config:`, path);
        // Load base config
        const baseConfig = await import(path);
        if (!baseConfig.default) {
            throw new Error('Unable to next-sitemap config file');
        }
        return withDefaultConfig(baseConfig.default);
    }
    /**
     * Load full config
     * @returns
     */
    async loadConfig() {
        // Load base config
        const baseConfig = await this.loadBaseConfig();
        // Find the runtime paths using base config
        const runtimePaths = getRuntimePaths(baseConfig);
        // Update base config with runtime config
        const config = await this.withRuntimeConfig(baseConfig, runtimePaths);
        // Return full result
        return {
            config,
            runtimePaths,
        };
    }
}