/**
 * @qbirr/sdk — Node.js client for the qbirr payment verification API.
 *
 *     import { Qbirr } from '@qbirr/sdk';
 *     const qb = new Qbirr({ apiKey: process.env.QBIRR_API_KEY! });
 *     const r = await qb.verify({
 *       provider: 'cbe',
 *       ref: 'FT23001234ABC',
 *       amount: 500,
 *       receiverName: 'YOUR NAME',
 *       receiverAccount: '1000017692643',
 *     });
 *     console.log(r.verified, r.payer);
 *
 * Works on Node 18+ (uses the built-in fetch). No dependencies.
 */
/** Thrown for network failures, HTTP errors, or non-JSON responses. */
export class QbirrError extends Error {
    status;
    body;
    constructor(message, status, body) {
        super(message);
        this.status = status;
        this.body = body;
        this.name = 'QbirrError';
    }
}
const DEFAULT_BASE_URL = 'https://verify.qbirr.com';
export class Qbirr {
    apiKey;
    baseUrl;
    timeoutMs;
    fetchFn;
    constructor(opts) {
        if (!opts.apiKey)
            throw new QbirrError('apiKey is required');
        this.apiKey = opts.apiKey;
        this.baseUrl = (opts.baseUrl ?? DEFAULT_BASE_URL).replace(/\/+$/, '');
        this.timeoutMs = opts.timeoutMs ?? 30_000;
        this.fetchFn = opts.fetch ?? globalThis.fetch;
        if (!this.fetchFn)
            throw new QbirrError('fetch is not available — pass options.fetch on Node < 18');
    }
    /**
     * Verify a single transaction. Returns `{ verified: false, error: '...' }`
     * on a real verification failure (wrong amount, wrong receiver, expired
     * receipt). Throws QbirrError for network/auth problems.
     */
    async verify(req) {
        const body = {
            provider: req.provider,
            ref: req.ref,
            amount: req.amount,
            receiver_name: req.receiverName,
        };
        if (req.receiverAccount)
            body.receiver_account = req.receiverAccount;
        const data = await this.request('POST', '/api/v1/verify', body);
        return data;
    }
    /**
     * Verify by uploading the receipt itself — PDF or an image (PNG/JPEG).
     * Images with a QR code (most bank receipts have one) are decoded and
     * routed through the URL-based flow automatically.
     *
     *     const buf = await fs.readFile('receipt.pdf');
     *     await qb.verifyUpload({
     *       provider: 'cbe',
     *       amount: 999,
     *       receiverName: 'YOUR NAME',
     *       receiverAccount: '1000017692643',
     *       file: buf,
     *       filename: 'receipt.pdf',
     *       contentType: 'application/pdf',
     *     });
     */
    async verifyUpload(opts) {
        const form = new FormData();
        form.append('provider', opts.provider);
        form.append('amount', String(opts.amount));
        form.append('receiver_name', opts.receiverName);
        if (opts.receiverAccount)
            form.append('receiver_account', opts.receiverAccount);
        const blob = opts.file instanceof Blob
            ? opts.file
            : new Blob([opts.file], { type: opts.contentType || 'application/octet-stream' });
        form.append('file', blob, opts.filename || 'upload.pdf');
        return this.requestForm('POST', '/api/v1/verify/upload', form);
    }
    /** Returns the current month's quota usage for this API key. */
    async usage() {
        return this.request('GET', '/api/v1/usage');
    }
    async requestForm(method, path, form) {
        const url = `${this.baseUrl}${path}`;
        const ctrl = new AbortController();
        const timer = setTimeout(() => ctrl.abort(), this.timeoutMs);
        try {
            const resp = await this.fetchFn(url, {
                method,
                headers: { 'X-API-Key': this.apiKey, 'User-Agent': '@qbirr/sdk-node/1.0.0' },
                body: form,
                signal: ctrl.signal,
            });
            const text = await resp.text();
            let parsed;
            try {
                parsed = text ? JSON.parse(text) : {};
            }
            catch {
                throw new QbirrError(`Non-JSON response from qbirr (HTTP ${resp.status})`, resp.status, text);
            }
            if (!resp.ok)
                throw new QbirrError(parsed?.error || `HTTP ${resp.status}`, resp.status, parsed);
            return parsed;
        }
        catch (e) {
            if (e instanceof QbirrError)
                throw e;
            if (e?.name === 'AbortError')
                throw new QbirrError(`Upload timed out after ${this.timeoutMs}ms`);
            throw new QbirrError(`Network error: ${e.message}`);
        }
        finally {
            clearTimeout(timer);
        }
    }
    async request(method, path, body) {
        const url = `${this.baseUrl}${path}`;
        const ctrl = new AbortController();
        const timer = setTimeout(() => ctrl.abort(), this.timeoutMs);
        try {
            const resp = await this.fetchFn(url, {
                method,
                headers: {
                    'X-API-Key': this.apiKey,
                    'Content-Type': 'application/json',
                    Accept: 'application/json',
                    'User-Agent': '@qbirr/sdk-node/1.0.0',
                },
                body: body ? JSON.stringify(body) : undefined,
                signal: ctrl.signal,
            });
            let parsed;
            const text = await resp.text();
            try {
                parsed = text ? JSON.parse(text) : {};
            }
            catch {
                throw new QbirrError(`Non-JSON response from qbirr (HTTP ${resp.status})`, resp.status, text);
            }
            if (!resp.ok) {
                const msg = parsed?.error || `HTTP ${resp.status}`;
                throw new QbirrError(msg, resp.status, parsed);
            }
            return parsed;
        }
        catch (e) {
            if (e instanceof QbirrError)
                throw e;
            if (e?.name === 'AbortError')
                throw new QbirrError(`Request timed out after ${this.timeoutMs}ms`);
            throw new QbirrError(`Network error: ${e.message}`);
        }
        finally {
            clearTimeout(timer);
        }
    }
}
export default Qbirr;