/**
 * Universal Path implementation
 * Browser: Manual path operations
 * Node.js: Uses built-in path module
 */
import { isNode } from '../utils/environment.js';
let nodePath = null;
// Dynamic import for Node.js path (only in Node.js environment)
if (isNode()) {
    try {
        nodePath = await import('path');
    }
    catch {
        // Ignore import errors in non-Node environments
    }
}
/**
 * Universal path operations
 */
export function join(...paths) {
    if (nodePath) {
        return nodePath.join(...paths);
    }
    // Browser fallback implementation
    const parts = [];
    for (const path of paths) {
        if (path) {
            parts.push(...path.split('/').filter(p => p));
        }
    }
    return parts.join('/');
}
export function dirname(path) {
    if (nodePath) {
        return nodePath.dirname(path);
    }
    // Browser fallback implementation
    const parts = path.split('/').filter(p => p);
    if (parts.length <= 1)
        return '.';
    return parts.slice(0, -1).join('/');
}
export function basename(path, ext) {
    if (nodePath) {
        return nodePath.basename(path, ext);
    }
    // Browser fallback implementation
    const parts = path.split('/');
    let name = parts[parts.length - 1];
    if (ext && name.endsWith(ext)) {
        name = name.slice(0, -ext.length);
    }
    return name;
}
export function extname(path) {
    if (nodePath) {
        return nodePath.extname(path);
    }
    // Browser fallback implementation
    const name = basename(path);
    const lastDot = name.lastIndexOf('.');
    return lastDot === -1 ? '' : name.slice(lastDot);
}
export function resolve(...paths) {
    if (nodePath) {
        return nodePath.resolve(...paths);
    }
    // Browser fallback implementation
    let resolved = '';
    let resolvedAbsolute = false;
    for (let i = paths.length - 1; i >= -1 && !resolvedAbsolute; i--) {
        const path = i >= 0 ? paths[i] : '/';
        if (!path)
            continue;
        resolved = path + '/' + resolved;
        resolvedAbsolute = path.charAt(0) === '/';
    }
    // Normalize the path
    resolved = normalizeArray(resolved.split('/').filter(p => p), !resolvedAbsolute).join('/');
    return (resolvedAbsolute ? '/' : '') + resolved;
}
export function relative(from, to) {
    if (nodePath) {
        return nodePath.relative(from, to);
    }
    // Browser fallback implementation
    const fromParts = resolve(from).split('/').filter(p => p);
    const toParts = resolve(to).split('/').filter(p => p);
    let commonLength = 0;
    for (let i = 0; i < Math.min(fromParts.length, toParts.length); i++) {
        if (fromParts[i] === toParts[i]) {
            commonLength++;
        }
        else {
            break;
        }
    }
    const upCount = fromParts.length - commonLength;
    const upParts = new Array(upCount).fill('..');
    const downParts = toParts.slice(commonLength);
    return [...upParts, ...downParts].join('/');
}
export function isAbsolute(path) {
    if (nodePath) {
        return nodePath.isAbsolute(path);
    }
    // Browser fallback implementation
    return path.charAt(0) === '/';
}
/**
 * Normalize array helper function
 */
function normalizeArray(parts, allowAboveRoot) {
    const res = [];
    for (let i = 0; i < parts.length; i++) {
        const p = parts[i];
        if (!p || p === '.')
            continue;
        if (p === '..') {
            if (res.length && res[res.length - 1] !== '..') {
                res.pop();
            }
            else if (allowAboveRoot) {
                res.push('..');
            }
        }
        else {
            res.push(p);
        }
    }
    return res;
}
// Path separator (always use forward slash for consistency)
export const sep = '/';
export const delimiter = ':';
// POSIX path object for compatibility
export const posix = {
    join,
    dirname,
    basename,
    extname,
    resolve,
    relative,
    isAbsolute,
    sep: '/',
    delimiter: ':'
};
// Default export
export default {
    join,
    dirname,
    basename,
    extname,
    resolve,
    relative,
    isAbsolute,
    sep,
    delimiter,
    posix
};
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