import { z } from 'zod';
/**
 * Zod schema for global ProjectX configuration.
 * Uses passthrough() to preserve unknown fields for forward compatibility.
 */
export const GlobalConfigSchema = z
    .object({
    featureFlags: z
        .record(z.string(), z.boolean())
        .optional()
        .default({}),
    profile: z
        .enum(['core', 'custom'])
        .optional()
        .default('core'),
    delivery: z
        .enum(['both', 'skills', 'commands'])
        .optional()
        .default('both'),
    workflows: z
        .array(z.string())
        .optional(),
})
    .passthrough();
/**
 * Default configuration values.
 */
export const DEFAULT_CONFIG = {
    featureFlags: {},
    profile: 'core',
    delivery: 'both',
};
const KNOWN_TOP_LEVEL_KEYS = new Set([...Object.keys(DEFAULT_CONFIG), 'workflows']);
/**
 * Validate a config key path for CLI set operations.
 * Unknown top-level keys are rejected unless explicitly allowed by the caller.
 */
export function validateConfigKeyPath(path) {
    const rawKeys = path.split('.');
    if (rawKeys.length === 0 || rawKeys.some((key) => key.trim() === '')) {
        return { valid: false, reason: 'Key path must not be empty' };
    }
    const rootKey = rawKeys[0];
    if (!KNOWN_TOP_LEVEL_KEYS.has(rootKey)) {
        return { valid: false, reason: `Unknown top-level key "${rootKey}"` };
    }
    if (rootKey === 'featureFlags') {
        if (rawKeys.length > 2) {
            return { valid: false, reason: 'featureFlags values are booleans and do not support nested keys' };
        }
        return { valid: true };
    }
    if (rawKeys.length > 1) {
        return { valid: false, reason: `"${rootKey}" does not support nested keys` };
    }
    return { valid: true };
}
/**
 * Get a nested value from an object using dot notation.
 *
 * @param obj - The object to access
 * @param path - Dot-separated path (e.g., "featureFlags.someFlag")
 * @returns The value at the path, or undefined if not found
 */
export function getNestedValue(obj, path) {
    const keys = path.split('.');
    let current = obj;
    for (const key of keys) {
        if (current === null || current === undefined) {
            return undefined;
        }
        if (typeof current !== 'object') {
            return undefined;
        }
        current = current[key];
    }
    return current;
}
/**
 * Set a nested value in an object using dot notation.
 * Creates intermediate objects as needed.
 *
 * @param obj - The object to modify (mutated in place)
 * @param path - Dot-separated path (e.g., "featureFlags.someFlag")
 * @param value - The value to set
 */
export function setNestedValue(obj, path, value) {
    const keys = path.split('.');
    let current = obj;
    for (let i = 0; i < keys.length - 1; i++) {
        const key = keys[i];
        if (current[key] === undefined || current[key] === null || typeof current[key] !== 'object') {
            current[key] = {};
        }
        current = current[key];
    }
    const lastKey = keys[keys.length - 1];
    current[lastKey] = value;
}
/**
 * Delete a nested value from an object using dot notation.
 *
 * @param obj - The object to modify (mutated in place)
 * @param path - Dot-separated path (e.g., "featureFlags.someFlag")
 * @returns true if the key existed and was deleted, false otherwise
 */
export function deleteNestedValue(obj, path) {
    const keys = path.split('.');
    let current = obj;
    for (let i = 0; i < keys.length - 1; i++) {
        const key = keys[i];
        if (current[key] === undefined || current[key] === null || typeof current[key] !== 'object') {
            return false;
        }
        current = current[key];
    }
    const lastKey = keys[keys.length - 1];
    if (lastKey in current) {
        delete current[lastKey];
        return true;
    }
    return false;
}
/**
 * Coerce a string value to its appropriate type.
 * - "true" / "false" -> boolean
 * - Numeric strings -> number
 * - Everything else -> string
 *
 * @param value - The string value to coerce
 * @param forceString - If true, always return the value as a string
 * @returns The coerced value
 */
export function coerceValue(value, forceString = false) {
    if (forceString) {
        return value;
    }
    // Boolean coercion
    if (value === 'true') {
        return true;
    }
    if (value === 'false') {
        return false;
    }
    // Number coercion - must be a valid finite number
    const num = Number(value);
    if (!isNaN(num) && isFinite(num) && value.trim() !== '') {
        return num;
    }
    return value;
}
/**
 * Format a value for YAML-like display.
 *
 * @param value - The value to format
 * @param indent - Current indentation level
 * @returns Formatted string
 */
export function formatValueYaml(value, indent = 0) {
    const indentStr = '  '.repeat(indent);
    if (value === null || value === undefined) {
        return 'null';
    }
    if (typeof value === 'boolean' || typeof value === 'number') {
        return String(value);
    }
    if (typeof value === 'string') {
        return value;
    }
    if (Array.isArray(value)) {
        if (value.length === 0) {
            return '[]';
        }
        return value.map((item) => `${indentStr}- ${formatValueYaml(item, indent + 1)}`).join('\n');
    }
    if (typeof value === 'object') {
        const entries = Object.entries(value);
        if (entries.length === 0) {
            return '{}';
        }
        return entries
            .map(([key, val]) => {
            const formattedVal = formatValueYaml(val, indent + 1);
            if (typeof val === 'object' && val !== null && Object.keys(val).length > 0) {
                return `${indentStr}${key}:\n${formattedVal}`;
            }
            return `${indentStr}${key}: ${formattedVal}`;
        })
            .join('\n');
    }
    return String(value);
}
/**
 * Validate a configuration object against the schema.
 *
 * @param config - The configuration to validate
 * @returns Validation result with success status and optional error message
 */
export function validateConfig(config) {
    try {
        GlobalConfigSchema.parse(config);
        return { success: true };
    }
    catch (error) {
        if (error instanceof z.ZodError) {
            const zodError = error;
            const messages = zodError.issues.map((e) => `${e.path.join('.')}: ${e.message}`);
            return { success: false, error: messages.join('; ') };
        }
        return { success: false, error: 'Unknown validation error' };
    }
}
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