"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.GlobMatcher = void 0;
const mm = require("micromatch");
const path = require("path");
class GlobMatcher {
    /**
     * Construct a `.gitignore` emulator
     * @param patterns the contents of a `.gitignore` style file or an array of individual glob rules.
     * @param root the working directory
     */
    constructor(patterns, root, nodePath) {
        this.patterns = patterns;
        this.root = root;
        this.path = nodePath !== null && nodePath !== void 0 ? nodePath : path;
        this.matchEx = buildMatcherFn(this.path, patterns, root);
    }
    /**
     * Check to see if a filename matches any of the globs.
     * If filename is relative, it is considered relative to the root.
     * If filename is absolute and contained within the root, it will be made relative before being tested for a glob match.
     * If filename is absolute and not contained within the root, it will be tested as is.
     * @param filename full path of the file to check.
     */
    match(filename) {
        return this.matchEx(filename).matched;
    }
}
exports.GlobMatcher = GlobMatcher;
/**
 * This function attempts to emulate .gitignore functionality as much as possible.
 *
 * The resulting matcher function: (filename: string) => GlobMatch
 *
 * If filename is relative, it is considered relative to the root.
 * If filename is absolute and contained within the root, it will be made relative before being tested for a glob match.
 * If filename is absolute and not contained within the root, it will be tested as is.
 *
 * @param patterns the contents of a .gitignore style file or an array of individual glob rules.
 * @param root the working directory
 * @returns a function given a filename returns true if it matches.
 */
function buildMatcherFn(path, patterns, root) {
    if (typeof patterns == 'string') {
        patterns = patterns.split(/\r?\n/g);
    }
    const dirRoot = path.normalize(root || '/');
    const rules = patterns
        .map((p) => p.trim())
        .map((p, index) => ({ glob: p, index }))
        .filter((r) => !!r.glob)
        .map(({ glob, index }) => {
        const matchNeg = glob.match(/^!+/);
        const isNeg = (matchNeg && matchNeg[0].length & 1 && true) || false;
        const pattern = mutations.reduce((p, [regex, replace]) => p.replace(regex, replace), glob);
        const reg = mm.makeRe(pattern);
        const fn = (filename) => {
            const match = filename.match(reg);
            return !!match;
        };
        return { glob, index, isNeg, fn, reg };
    });
    const negRules = rules.filter((r) => r.isNeg);
    const posRules = rules.filter((r) => !r.isNeg);
    const fn = (filename) => {
        filename = path.normalize(filename);
        const offset = dirRoot === filename.slice(0, dirRoot.length) ? dirRoot.length : 0;
        const lName = filename.slice(offset);
        const filePath = path.parse(lName);
        const relPath = path.join(filePath.dir.slice(filePath.root.length), filePath.base);
        const fname = relPath.split(path.sep).join('/');
        for (const rule of negRules) {
            if (rule.fn(fname)) {
                return { matched: false, glob: rule.glob, index: rule.index, isNeg: rule.isNeg };
            }
        }
        for (const rule of posRules) {
            if (rule.fn(fname)) {
                return { matched: true, glob: rule.glob, index: rule.index, isNeg: rule.isNeg };
            }
        }
        return { matched: false };
    };
    return fn;
}
const mutations = [
    [/^!+/, ''],
    [/^[^/#][^/]*$/, '**/{$&,$&/**}'],
    [/^\/(?!\/)/, ''],
    [/\/$/, '$&**'],
];
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