window.Api = {
    _apiKey: '',

    setApiKey: function (key) {
        this._apiKey = key;
        sessionStorage.setItem('ocr_api_key', key);
    },

    getApiKey: function () {
        return this._apiKey || sessionStorage.getItem('ocr_api_key') || '';
    },

    _headers: function () {
        var headers = {};
        var key = this.getApiKey();
        if (key) headers['X-API-Key'] = key;
        headers['X-Request-ID'] = crypto.randomUUID ? crypto.randomUUID() : Utils.generateId();
        return headers;
    },

    checkHealth: function () {
        return fetch('/health')
            .then(function (resp) { return resp.json(); });
    },

    warmUp: function () {
        return fetch('/warm')
            .then(function (resp) { return resp.json(); });
    },

    parseBarcode: function (text) {
        var headers = this._headers();
        headers['Content-Type'] = 'application/json';

        return fetch('/api/barcode/parse', {
            method: 'POST',
            headers: headers,
            body: JSON.stringify({ text: text }),
        }).then(function (resp) {
            return resp.json().then(function (data) {
                if (!resp.ok) {
                    var err = new Error(data.error || 'Unknown error');
                    err.status = resp.status;
                    throw err;
                }
                return data;
            });
        });
    },

    scanSerial: function (imageFile) {
        var formData = new FormData();
        formData.append('image', imageFile);

        var controller = new AbortController();
        var timeoutId = setTimeout(function () { controller.abort(); }, 120000);

        return fetch('/api/serial', {
            method: 'POST',
            headers: this._headers(),
            body: formData,
            signal: controller.signal,
        }).then(function (resp) {
            clearTimeout(timeoutId);
            return resp.json().then(function (data) {
                if (!resp.ok) {
                    var err = new Error(data.error || 'Unknown error');
                    err.status = resp.status;
                    throw err;
                }
                return data;
            });
        }).catch(function (err) {
            clearTimeout(timeoutId);
            if (err.name === 'AbortError') {
                var timeoutErr = new Error('Request timed out after 120 seconds');
                timeoutErr.status = 0;
                throw timeoutErr;
            }
            throw err;
        });
    },

    processDocument: function (frontFile, docType, backFile) {
        var formData = new FormData();
        formData.append('front', frontFile);
        formData.append('doc_type', docType);
        if (backFile) {
            formData.append('back', backFile);
        }

        var controller = new AbortController();
        var timeoutId = setTimeout(function () { controller.abort(); }, 120000);

        return fetch('/api/ocr', {
            method: 'POST',
            headers: this._headers(),
            body: formData,
            signal: controller.signal,
        }).then(function (resp) {
            clearTimeout(timeoutId);
            return resp.json().then(function (data) {
                if (!resp.ok) {
                    var err = new Error(data.error || 'Unknown error');
                    err.status = resp.status;
                    throw err;
                }
                return data;
            });
        }).catch(function (err) {
            clearTimeout(timeoutId);
            if (err.name === 'AbortError') {
                var timeoutErr = new Error('Request timed out after 120 seconds');
                timeoutErr.status = 0;
                throw timeoutErr;
            }
            throw err;
        });
    },
};