/* API communication layer */

const API_BASE = 'api.php';

async function apiCall(action, options = {}) {
    const { method = 'GET', body = null, params = {} } = options;

    let url = API_BASE;
    const queryParams = new URLSearchParams({ action, ...params });

    if (method === 'GET') {
        url += '?' + queryParams.toString();
    }

    const headers = {};

    // Add MSAL token if available
    if (window.msalToken) {
        headers['Authorization'] = 'Bearer ' + window.msalToken;
    }

    const fetchOptions = { method, headers };
    if (body) {
        if (body instanceof FormData) {
            body.append('action', action);
            fetchOptions.body = body;
        } else {
            fetchOptions.body = body;
        }
    }

    const response = await fetch(url, fetchOptions);
    return response.json();
}

async function uploadFile(file) {
    const formData = new FormData();
    formData.append('pdf', file);
    return apiCall('upload', { method: 'POST', body: formData });
}

async function startCheck(jobId, quickMode) {
    const formData = new FormData();
    formData.append('job_id', jobId);
    if (quickMode) formData.append('quick_mode', '1');
    return apiCall('check', { method: 'POST', body: formData });
}

async function checkStatus(jobId) {
    return apiCall('status', { params: { job_id: jobId } });
}

async function getResult(jobId) {
    return apiCall('result', { params: { job_id: jobId } });
}

async function getDebugInfo(jobId) {
    return apiCall('debug', { params: { job_id: jobId } });
}

async function remediatePdf(jobId) {
    const formData = new FormData();
    formData.append('job_id', jobId);
    return apiCall('remediate', { method: 'POST', body: formData });
}

async function getStats() {
    return apiCall('stats');
}

async function uploadBatch(files) {
    const formData = new FormData();
    for (let i = 0; i < files.length; i++) {
        formData.append('pdfs[]', files[i]);
    }
    return apiCall('batch_upload', { method: 'POST', body: formData });
}

async function checkBatchStatus(batchId) {
    return apiCall('batch_status', { params: { batch_id: batchId } });
}

function getExportUrl(jobId, format) {
    const params = new URLSearchParams({ action: 'export', job_id: jobId, format: format });
    return API_BASE + '?' + params.toString();
}