// --- static/api.js ---

// ==========================================
// 1. 鎖定管理 (Lock Management)
// ==========================================
export async function apiAcquireLock(path, userId, username) {
    const response = await fetch('/api/v1/locks/acquire', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ path, user_id: userId, username })
    });
    return { status: response.status, data: await response.json() };
}

export async function apiReleaseLock(path, userId) {
    return fetch('/api/v1/locks/release', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ path, user_id: userId })
    });
}

export async function apiSendHeartbeat(path, userId) {
    return fetch('/api/v1/locks/heartbeat', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ path, user_id: userId })
    });
}

// ==========================================
// 2. 樹狀圖與選項快取 (Tree & Options)
// ==========================================
export async function apiGetFullConfig(host, username, password, skipFilter = false) {
    let url = `/api/v1/cmts-full-config?host=${encodeURIComponent(host)}&username=${encodeURIComponent(username)}&password=${encodeURIComponent(password)}`;
    if (skipFilter) url += '&skip_filter=true';
    const response = await fetch(url);
    return response.json();
}

export async function apiGetLeafOptions() {
    const response = await fetch('/api/v1/cmts-leaf-options');
    return response.json();
}

export async function apiSyncLeafOptions(paths) {
    return fetch('/api/v1/cmts-leaf-options/sync', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ leaf_paths: paths })
    });
}

export async function apiClearCache(paths) {
    const response = await fetch('/api/v1/clear_cache', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(paths)
    });
    if (!response.ok) throw new Error(`伺服器回應錯誤: ${response.status}`);
    return response.json();
}

// ==========================================
// 3. 指令生成與執行 (CLI Generation & Execution)
// ==========================================
export async function apiGenerateCli(diffs, interfaces) {
    const response = await fetch('/api/v1/cmts-generate-cli', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ diffs, interfaces_with_admin_state: interfaces })
    });
    return response.json();
}

export async function apiExecuteConfig(script, host, username, password) {
    const response = await fetch('/api/v1/cmts-config', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ script, host, username, password })
    });
    return response.json();
}

// ==========================================
// 4. 系統設定與過濾器 (System Settings)
// ==========================================
export async function apiGetTreeFilters() {
    const response = await fetch('/api/v1/settings/tree-filters');
    return response.json();
}

export async function apiSaveTreeFilters(hiddenKeys) {
    const response = await fetch('/api/v1/settings/tree-filters', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ hidden_keys: hiddenKeys })
    });
    return response.json();
}

// ==========================================
// 5. MAC Domain 與綜合查詢 (MAC Domain & Query)
// ==========================================
export async function apiGetMacDomainList(host, username, password) {
    const url = `/api/v1/cmts-mac-domain-list?host=${encodeURIComponent(host)}&username=${encodeURIComponent(username)}&password=${encodeURIComponent(password)}`;
    const response = await fetch(url);
    return response.json();
}

export async function apiGetMacDomainConfig(target, host, username, password) {
    const url = `/api/v1/cmts-mac-domain-config?target=${encodeURIComponent(target)}&host=${encodeURIComponent(host)}&username=${encodeURIComponent(username)}&password=${encodeURIComponent(password)}`;
    const response = await fetch(url);
    return response.json();
}

export async function apiExecuteQuery(queryType, target, host, username, password) {
    const url = `/api/v1/cmts-query?query_type=${queryType}&target=${encodeURIComponent(target)}&host=${encodeURIComponent(host)}&username=${encodeURIComponent(username)}&password=${encodeURIComponent(password)}`;
    const response = await fetch(url);
    return response.json();
}

// ==========================================
// 6. 專門處理串流的 API 呼叫函數 (UI 可以即時更新)
// ==========================================
export async function apiSyncLeafOptionsStream(paths, onProgress) {
    const response = await fetch('/api/v1/cmts-leaf-options/sync', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ leaf_paths: paths })
    });

    if (!response.body) throw new Error("瀏覽器不支援 ReadableStream");

    // 🌟 核心修改：讀取串流資料
    const reader = response.body.getReader();
    const decoder = new TextDecoder("utf-8");

    while (true) {
        const { done, value } = await reader.read();
        if (done) break; // 伺服器斷開連線 (任務完成)

        // 解碼二進位資料為文字
        const chunk = decoder.decode(value, { stream: true });
        
        // 因為一次可能收到多行 JSON，我們用換行符號切開
        const lines = chunk.split("\n").filter(line => line.trim() !== "");

        for (const line of lines) {
            try {
                const data = JSON.parse(line);
                onProgress(data); // 將解析後的資料傳給 UI 介面
            } catch (e) {
                console.error("JSON 解析錯誤:", e, line);
            }
        }
    }
}