"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.FileWatcher = void 0;
const fs_extra_1 = __importDefault(require("fs-extra"));
const path_1 = __importDefault(require("path"));
const debug_1 = __importDefault(require("debug"));
const chokidar_1 = require("chokidar");
const shared_1 = require("@vue/shared");
const utils_1 = require("./utils");
const debugWatcher = (0, debug_1.default)('uni:watcher');
class FileWatcher {
    constructor({ src, dest, transform }) {
        this.src = !(0, shared_1.isArray)(src) ? [src] : src;
        this.dest = dest;
        this.transform = transform;
    }
    watch(watchOptions, onReady, onChange) {
        if (!this.watcher) {
            const copy = this.copy.bind(this);
            const remove = this.remove.bind(this);
            // escape chokidar cwd
            const src = this.src.map((src) => (0, utils_1.pathToGlob)(path_1.default.resolve(watchOptions.cwd), src));
            let closeTimer;
            const checkReady = () => {
                if (closeTimer) {
                    clearTimeout(closeTimer);
                }
                closeTimer = setTimeout(() => {
                    onReady && onReady(this.watcher);
                    // 等首次change完，触发完ready，在切换到真实的onChange
                    this.onChange = onChange;
                }, watchOptions.readyTimeout || 300);
            };
            this.onChange = checkReady;
            this.watcher = (0, chokidar_1.watch)(src, watchOptions)
                .on('add', copy)
                // .on('addDir', copy)
                .on('change', copy)
                .on('unlink', remove)
                // .on('unlinkDir', remove)
                .on('ready', () => {
                checkReady();
            })
                .on('error', (e) => console.error('watch', e));
        }
        return this.watcher;
    }
    add(paths) {
        this.info('add', paths);
        return this.watcher.add(paths);
    }
    unwatch(paths) {
        this.info('unwatch', paths);
        return this.watcher.unwatch(paths);
    }
    close() {
        this.info('close');
        return this.watcher.close();
    }
    copy(from) {
        const to = this.to(from);
        this.info('copy', from + '=>' + to);
        let content = '';
        if (this.transform) {
            const filename = this.from(from);
            content = this.transform(fs_extra_1.default.readFileSync(filename), filename);
        }
        if (content) {
            try {
                fs_extra_1.default.outputFileSync(to, content);
            }
            catch (e) {
                // noop
            }
            this.onChange && this.onChange();
            return;
        }
        try {
            fs_extra_1.default.copySync(this.from(from), to, { overwrite: true });
        }
        catch (e) {
            // noop
        }
        this.onChange && this.onChange();
    }
    remove(from) {
        const to = this.to(from);
        this.info('remove', from + '=>' + to);
        try {
            fs_extra_1.default.removeSync(to);
        }
        catch (e) {
            // noop
        }
        this.onChange && this.onChange();
    }
    info(type, msg) {
        debugWatcher.enabled && debugWatcher(type, msg);
    }
    from(from) {
        return path_1.default.join(this.watcher.options.cwd, from);
    }
    to(from) {
        return path_1.default.join(this.dest, from);
    }
}
exports.FileWatcher = FileWatcher;