/* ════════════════════════════════════════
   AI ORCHESTRATION PLATFORM — APP LOGIC
   ════════════════════════════════════════ */

const { createApp, ref, reactive, computed, nextTick, onMounted } = Vue;

/* ════════════════════════════════════════
   SEED / STATIC DATA
   ════════════════════════════════════════ */

const SEED_AGENTS = [
  { agent_id: 'agt-001', agent_name: 'Planner',    agent_role: 'Task decomposition',    status: 'idle', color: '#6ee7b7' },
  { agent_id: 'agt-002', agent_name: 'Researcher', agent_role: 'Web & data retrieval',  status: 'busy', color: '#818cf8' },
  { agent_id: 'agt-003', agent_name: 'Coder',      agent_role: 'Code generation',       status: 'idle', color: '#f472b6' },
  { agent_id: 'agt-004', agent_name: 'Reviewer',   agent_role: 'QA & validation',       status: 'idle', color: '#fbbf24' },
];

const SEED_PIPELINES = [
  { pipeline_id: 'pip-001', pipeline_name: 'Auto Orchestrate', pipeline_description: 'Pilih agen secara otomatis' },
  { pipeline_id: 'pip-002', pipeline_name: 'Research Mode',    pipeline_description: 'Fokus riset & analisis' },
  { pipeline_id: 'pip-003', pipeline_name: 'Code Generator',   pipeline_description: 'Fokus pembuatan kode' },
  { pipeline_id: 'pip-004', pipeline_name: 'Review Pipeline',  pipeline_description: 'Review & QA saja' },
];

const SEED_ACTIVE_TASKS = [
  { task_id: 'tsk-001', task_name: 'Market analysis',   assigned_agent: 'Researcher', progress_percent: 65, task_color: '#818cf8' },
  { task_id: 'tsk-002', task_name: 'Code review',       assigned_agent: 'Reviewer',   progress_percent: 30, task_color: '#fbbf24' },
];

const SEED_TOKEN_USAGE = [
  { model_name: 'claude-3-opus',  tokens_used: 48200, token_limit: 100000, bar_color: '#6ee7b7' },
  { model_name: 'claude-3-haiku', tokens_used: 12500, token_limit: 100000, bar_color: '#818cf8' },
];

const SEED_SYSTEM_LOGS = [
  { log_id: 'log-001', log_time: '14:02', log_level: 'success', log_message: 'Orchestrator ready' },
  { log_id: 'log-002', log_time: '14:03', log_level: '',        log_message: 'Researcher agent connected' },
  { log_id: 'log-003', log_time: '14:05', log_level: 'warn',    log_message: 'High latency detected (>500ms)' },
];

const SUGGESTIONS = [
  { title: '🔍 Research Task',  desc: 'Riset topik dan buat ringkasan',   prompt: 'Riset perkembangan terbaru machine learning di 2024 dan buat ringkasan eksekutif' },
  { title: '💻 Generate Code',  desc: 'Buat kode dari deskripsi',         prompt: 'Buat REST API sederhana menggunakan Node.js + Express untuk manajemen todo list' },
  { title: '📋 Plan a Project', desc: 'Dekomposisi proyek jadi task',      prompt: 'Buat rencana proyek untuk membangun platform e-commerce dari nol dalam 3 bulan' },
  { title: '✅ Review & QA',    desc: 'Review output dari agen lain',      prompt: 'Review dan evaluasi kualitas kode Python berikut untuk deteksi anomali data sensor' },
];

/**
 * Mock SSE event sequences — simulasi stream dari AI backend.
 *
 * CATATAN INTEGRASI (SSE):
 * Nanti ganti seluruh fungsi mockSSEStream() dengan:
 *
 *   const es = new EventSource('/api/stream?task_id=...');
 *   es.addEventListener('message', (e) => pushSSEEntry('msg', e.data));
 *   es.addEventListener('tool',    (e) => pushSSEEntry('tool', e.data));
 *   es.addEventListener('done',    (e) => { pushSSEEntry('done', e.data); es.close(); });
 *   es.addEventListener('error',   (e) => { pushSSEEntry('error', 'Stream error'); es.close(); });
 */
const SSE_MOCK_SEQUENCES = [
  [
    { event_type: 'msg',    data: 'Parsing task intent…',          delay: 200 },
    { event_type: 'msg',    data: 'Selecting optimal agent…',      delay: 400 },
    { event_type: 'tool',   data: 'repo_read: fetching README',    delay: 600 },
    { event_type: 'tool',   data: 'repo_read: scanning src/',      delay: 500 },
    { event_type: 'msg',    data: 'Analysing code structure…',     delay: 700 },
    { event_type: 'stream', data: 'Generating response',           delay: 300 },
    { event_type: 'done',   data: 'Task completed (1.4s)',         delay: 500 },
  ],
  [
    { event_type: 'msg',    data: 'Decomposing task into steps…',  delay: 300 },
    { event_type: 'tool',   data: 'web_search: query sent',        delay: 500 },
    { event_type: 'tool',   data: 'web_search: 12 results found',  delay: 400 },
    { event_type: 'msg',    data: 'Summarising findings…',         delay: 800 },
    { event_type: 'stream', data: 'Streaming answer tokens',       delay: 600 },
    { event_type: 'done',   data: 'Task completed (2.1s)',         delay: 400 },
  ],
  [
    { event_type: 'msg',    data: 'Loading repository context…',   delay: 400 },
    { event_type: 'tool',   data: 'git_diff: comparing changes',   delay: 700 },
    { event_type: 'tool',   data: 'code_lint: running checks',     delay: 600 },
    { event_type: 'msg',    data: 'Writing fix…',                  delay: 500 },
    { event_type: 'tool',   data: 'git_commit: staging files',     delay: 400 },
    { event_type: 'tool',   data: 'git_push: pushing branch',      delay: 500 },
    { event_type: 'done',   data: 'Branch pushed (2.8s)',          delay: 300 },
  ],
];

/* ════════════════════════════════════════
   HELPERS
   ════════════════════════════════════════ */

const delay    = (ms)       => new Promise((r) => setTimeout(r, ms));
const rand     = (min, max) => Math.floor(Math.random() * (max - min) + min);
const pickRand = (arr)      => arr[Math.floor(Math.random() * arr.length)];
const nowTime  = ()         => new Date().toLocaleTimeString('id-ID', { hour: '2-digit', minute: '2-digit' });
const nowTs    = ()         => new Date().toLocaleTimeString('id-ID', { hour: '2-digit', minute: '2-digit', second: '2-digit' });
const makeId   = (p, n)     => `${p}-${String(n).padStart(3, '0')}`;

/**
 * Parse "https://github.com/owner/repo" → { owner, repo_name }
 * Returns null when invalid.
 */
function parseGithubUrl(url) {
  try {
    const u = new URL(url.trim());
    if (u.hostname !== 'github.com') return null;
    const parts = u.pathname.replace(/^\//, '').replace(/\/$/, '').split('/');
    if (parts.length < 2) return null;
    return { owner: parts[0], repo_name: parts[1] };
  } catch {
    return null;
  }
}

/**
 * Build GitHub API headers from PAT.
 * CATATAN INTEGRASI: headers ini yang dikirim ke endpoint /api/github/*
 * atau langsung ke api.github.com.
 */
function githubHeaders(pat) {
  return {
    Authorization: `Bearer ${pat}`,
    Accept: 'application/vnd.github+json',
    'X-GitHub-Api-Version': '2022-11-28',
  };
}

/* ════════════════════════════════════════
   VUE APP
   ════════════════════════════════════════ */

createApp({
  setup() {

    /* ── GitHub Auth state ──
     * Data contract: GitHubAuth
     * {
     *   is_authenticated : boolean
     *   pat_input        : string   (cleared after connect)
     *   pat              : string   (stored in memory only, never localStorage)
     *   username         : string
     *   avatar_url       : string
     * }
     */
    const github_auth = reactive({
      is_authenticated: false,
      pat_input:        '',
      pat:              '',
      username:         '',
      avatar_url:       '',
    });

    /* ── Repo state ──
     * Data contract: RepoState
     * {
     *   url_input     : string
     *   is_analysing  : boolean
     *   info          : RepoInfo | null
     * }
     *
     * RepoInfo:
     * {
     *   full_name         : string   (e.g. "owner/repo")
     *   language          : string
     *   stars_count       : number
     *   open_issues_count : number
     *   default_branch    : string
     *   is_contributor    : boolean  (true if authed user can push)
     * }
     */
    const repo = reactive({
      url_input:    '',
      is_analysing: false,
      info:         null,
    });

    /* ── SSE Stream state ──
     * CATATAN INTEGRASI:
     * is_active  → true saat EventSource sedang terbuka
     * entries    → array of { ts, event_type, data }
     * event_type → 'msg' | 'tool' | 'done' | 'error' | 'stream'
     */
    const sse_stream = reactive({
      is_active: false,
      entries:   [],
    });

    /* ── Commit result (last) ──
     * Data contract: CommitResult
     * {
     *   branch_name    : string
     *   commit_sha     : string
     *   commit_message : string
     *   commits_url    : string   (link ke tab commits branch)
     *   pr_url         : string   (link buat PR)
     * }
     */
    const last_commit_result = ref(null);

    /* ── Core state ── */
    const agents            = ref(SEED_AGENTS.map((a) => ({ ...a })));
    const pipelines         = ref(SEED_PIPELINES);
    const active_pipeline   = ref(pipelines.value[0]);
    const selected_agent_id = ref('agt-001');
    const messages          = ref([]);
    const session_stats     = reactive({ total_tasks: 0, success_rate: 98, avg_latency_ms: 312 });
    const active_tasks      = ref(SEED_ACTIVE_TASKS.map((t) => ({ ...t })));
    const token_usage       = ref(SEED_TOKEN_USAGE.map((u) => ({ ...u })));
    const system_logs       = ref(SEED_SYSTEM_LOGS.map((l) => ({ ...l })));
    const suggestions       = SUGGESTIONS;

    const input_text        = ref('');
    const is_loading        = ref(false);
    const messageContainer  = ref(null);
    const sseLogArea        = ref(null);
    const textarea          = ref(null);

    const modal = reactive({
      show:          false,
      title:         '',
      body:          '',
      confirm_label: '',
      confirm_class: 'primary',
      on_confirm:    () => {},
    });

    let msg_counter = 0;
    let log_counter = SEED_SYSTEM_LOGS.length;

    /* ════════════════════════════════════════
       GITHUB AUTH
       ════════════════════════════════════════ */

    /**
     * connectGithub — verifikasi PAT dan ambil profil user.
     *
     * CATATAN INTEGRASI:
     * Ganti fetch di bawah dengan endpoint backend kamu, misalnya:
     *   POST /api/auth/github  { pat }  → { username, avatar_url }
     *
     * Backend perlu forward ke: GET https://api.github.com/user
     * dengan header Authorization: Bearer <pat>
     * dan kembalikan { login, avatar_url } ke frontend.
     */
    async function connectGithub() {
      const pat = github_auth.pat_input.trim();
      if (!pat) return;

      addLog('', 'Verifying GitHub PAT…');

      /* --- MOCK: simulasi verifikasi token --- */
      await delay(800);
      const is_valid = pat.startsWith('ghp_') || pat.length > 20;

      if (!is_valid) {
        addLog('error', 'GitHub PAT invalid');
        showModal('Authentication Failed', '<p>PAT tidak valid. Pastikan token dimulai dengan <code>ghp_</code> dan memiliki scope <code>repo</code>.</p>');
        return;
      }

      github_auth.pat              = pat;
      github_auth.pat_input        = '';
      github_auth.is_authenticated = true;
      github_auth.username         = 'dev_user';   // ← dari GET /user response: data.login
      github_auth.avatar_url       = '';            // ← data.avatar_url
      addLog('success', `GitHub connected as ${github_auth.username}`);
    }

    function revokeGithub() {
      github_auth.is_authenticated = false;
      github_auth.pat              = '';
      github_auth.username         = '';
      repo.info                    = null;
      addLog('warn', 'GitHub session revoked');
    }

    /* ════════════════════════════════════════
       REPO ANALYSE
       ════════════════════════════════════════ */

    /**
     * analyseRepo — fetch metadata repo dan cek contributor status.
     *
     * CATATAN INTEGRASI (dua endpoint GitHub API):
     *
     * 1. GET https://api.github.com/repos/{owner}/{repo}
     *    → ambil full_name, language, stargazers_count, open_issues_count, default_branch
     *
     * 2. GET https://api.github.com/repos/{owner}/{repo}/collaborators/{username}
     *    → 204 = contributor, 404 = bukan contributor
     *    (endpoint ini butuh PAT dengan scope repo)
     *
     * Kalau user belum auth, is_contributor selalu false.
     */
    async function analyseRepo() {
      const url_str = repo.url_input.trim();
      const parsed  = parseGithubUrl(url_str);

      if (!parsed) {
        showModal('URL Tidak Valid', '<p>Format URL harus: <code>https://github.com/owner/repo</code></p>');
        return;
      }

      repo.is_analysing = true;
      addLog('', `Analysing ${parsed.owner}/${parsed.repo_name}…`);

      /* --- MOCK: simulasi API response --- */
      await delay(1200);

      const is_authed      = github_auth.is_authenticated;
      const is_contributor = is_authed && Math.random() > 0.4; // simulasi: 60% kemungkinan contributor

      repo.info = {
        full_name:         `${parsed.owner}/${parsed.repo_name}`,
        language:          pickRand(['TypeScript', 'Python', 'Go', 'Rust', 'JavaScript']),
        stars_count:       rand(10, 4800),
        open_issues_count: rand(0, 42),
        default_branch:    'main',
        is_contributor,
      };

      repo.is_analysing = false;
      addLog('success', `Repo loaded: ${repo.info.full_name} (contributor: ${is_contributor})`);

      /* Auto-trigger agent pipeline */
      input_text.value = `Analisis repository ${repo.info.full_name} secara menyeluruh — ${repo.info.language}, ${repo.info.stars_count} stars, ${repo.info.open_issues_count} issues`;
      await sendMessage();
    }

    /* ════════════════════════════════════════
       SSE STREAM (MOCK)
       ════════════════════════════════════════ */

    function pushSSEEntry(event_type, data) {
      sse_stream.entries.push({ ts: nowTs(), event_type, data });
      nextTick(() => {
        if (sseLogArea.value) sseLogArea.value.scrollTop = sseLogArea.value.scrollHeight;
      });
    }

    /**
     * mockSSEStream — simulasi event yang diterima dari backend via SSE.
     *
     * CATATAN INTEGRASI:
     * Hapus fungsi ini dan ganti `await mockSSEStream()` dengan:
     *
     *   const es = new EventSource(`/api/tasks/${task_id}/stream`);
     *   await new Promise((resolve, reject) => {
     *     es.addEventListener('message', (e) => pushSSEEntry('msg', e.data));
     *     es.addEventListener('tool',    (e) => pushSSEEntry('tool', e.data));
     *     es.addEventListener('stream',  (e) => pushSSEEntry('stream', e.data));
     *     es.addEventListener('done',    (e) => { pushSSEEntry('done', e.data); es.close(); resolve(); });
     *     es.addEventListener('error',   (e) => { pushSSEEntry('error', 'Connection error'); es.close(); reject(); });
     *   });
     */
    async function mockSSEStream() {
      sse_stream.is_active = true;
      const seq = pickRand(SSE_MOCK_SEQUENCES);
      for (const event of seq) {
        await delay(event.delay);
        pushSSEEntry(event.event_type, event.data);
      }
      sse_stream.is_active = false;
    }

    /* ════════════════════════════════════════
       DOWNLOAD REPORT
       ════════════════════════════════════════ */

    /**
     * downloadReport — export session ke file .txt / .md.
     *
     * CATATAN INTEGRASI:
     * Kalau backend sudah punya endpoint laporan, ganti dengan:
     *   window.open(`/api/sessions/${session_id}/report?format=pdf`, '_blank');
     *
     * Untuk sekarang, kita generate langsung di browser dari state.
     */
    function downloadReport() {
      const lines = [
        '# AI Orchestration — Session Report',
        `Generated  : ${new Date().toLocaleString('id-ID')}`,
        `Pipeline   : ${active_pipeline.value.pipeline_name}`,
        `Repo       : ${repo.info ? repo.info.full_name : '(none)'}`,
        `Total tasks: ${session_stats.total_tasks}`,
        `Success    : ${session_stats.success_rate}%`,
        '',
        '---',
        '',
        '## Conversation Log',
        '',
      ];

      messages.value.forEach((msg) => {
        if (msg.is_typing) return;
        lines.push(`### [${msg.created_at}] ${msg.sender_name} (${msg.sender_type})`);
        lines.push(msg.message_content || '');
        if (msg.pipeline_trace && msg.pipeline_trace.length) {
          lines.push('');
          lines.push('**Pipeline Trace:**');
          msg.pipeline_trace.forEach((s) => lines.push(`  • ${s.step_agent} → ${s.step_output} (${s.duration_ms}ms)`));
        }
        if (msg.commit_result) {
          lines.push('');
          lines.push(`**Branch Created:** ${msg.commit_result.branch_name}`);
          lines.push(`**Commit:** ${msg.commit_result.commit_message}`);
          lines.push(`**Commits URL:** ${msg.commit_result.commits_url}`);
        }
        lines.push('');
      });

      if (sse_stream.entries.length) {
        lines.push('---', '', '## SSE Stream Log', '');
        sse_stream.entries.forEach((e) => lines.push(`[${e.ts}] [${e.event_type}] ${e.data}`));
      }

      const blob = new Blob([lines.join('\n')], { type: 'text/markdown;charset=utf-8' });
      const url  = URL.createObjectURL(blob);
      const a    = document.createElement('a');
      a.href     = url;
      a.download = `orch-report-${Date.now()}.md`;
      a.click();
      URL.revokeObjectURL(url);
      addLog('success', 'Report downloaded');
    }

    /* ════════════════════════════════════════
       MODAL HELPER
       ════════════════════════════════════════ */

    function showModal(title, body, opts = {}) {
      modal.title         = title;
      modal.body          = body;
      modal.confirm_label = opts.confirm_label || '';
      modal.confirm_class = opts.confirm_class || 'primary';
      modal.on_confirm    = opts.on_confirm    || (() => { modal.show = false; });
      modal.show          = true;
    }

    /* ════════════════════════════════════════
       CORE UTILITIES
       ════════════════════════════════════════ */

    function getAgentColor(agent_id) {
      const a = agents.value.find((a) => a.agent_id === agent_id);
      return a ? a.color : '#888';
    }

    function setAgentStatus(agent_id, status) {
      const a = agents.value.find((a) => a.agent_id === agent_id);
      if (a) a.status = status;
    }

    function addLog(level, message) {
      system_logs.value.unshift({
        log_id:      makeId('log', ++log_counter),
        log_time:    nowTime(),
        log_level:   level,
        log_message: message,
      });
      if (system_logs.value.length > 30) system_logs.value.pop();
    }

    async function scrollToBottom() {
      await nextTick();
      if (messageContainer.value) messageContainer.value.scrollTop = messageContainer.value.scrollHeight;
    }

    function autoResize(e) {
      const el = e.target;
      el.style.height = 'auto';
      el.style.height = Math.min(el.scrollHeight, 160) + 'px';
    }

    async function useSuggestion(prompt) {
      input_text.value = prompt;
      await sendMessage();
    }

    function clearChat() {
      messages.value          = [];
      last_commit_result.value = null;
      session_stats.total_tasks = 0;
    }

    /* ── Template class/style helpers ── */
    function avatarClass(msg) {
      if (msg.sender_type === 'user')         return 'avatar-user';
      if (msg.sender_type === 'orchestrator') return 'avatar-orchestrator';
      return 'avatar-agent';
    }
    function bubbleClass(msg) {
      return {
        'bubble-user':   msg.sender_type === 'user',
        'bubble-system': msg.sender_type === 'orchestrator',
        'bubble-agent':  msg.sender_type === 'agent',
      };
    }
    function agentBubbleStyle(agent_id) {
      const color = getAgentColor(agent_id);
      return { borderColor: color + '55', background: color + '0d' };
    }
    function tokenBarWidth(usage) {
      return Math.min((usage.tokens_used / usage.token_limit) * 100, 100);
    }

    /* ── Message builders ── */
    function buildUserMsg(text) {
      return {
        message_id: makeId('msg', ++msg_counter), session_id: 'ses-001',
        sender_type: 'user', sender_name: 'You', sender_initials: 'ME',
        agent_id: null, message_content: text,
        pipeline_trace: [], commit_result: null,
        is_typing: false, created_at: nowTime(),
      };
    }
    function buildTypingMsg(sender_type, sender_name, sender_initials, agent_id = null) {
      return {
        message_id: makeId('msg', ++msg_counter),
        sender_type, sender_name, sender_initials, agent_id,
        message_content: '', pipeline_trace: [], commit_result: null,
        is_typing: true, created_at: nowTime(),
      };
    }

    /* ════════════════════════════════════════
       SEND MESSAGE — MAIN FLOW
       ════════════════════════════════════════ */

    /**
     * sendMessage — mengirim pesan ke orchestrator.
     *
     * CATATAN INTEGRASI:
     * Ganti blok "simulate agent work" dengan:
     *   const task = await fetch('/api/tasks', {
     *     method: 'POST',
     *     headers: { 'Content-Type': 'application/json' },
     *     body: JSON.stringify({
     *       session_id    : 'ses-001',
     *       pipeline_id   : active_pipeline.value.pipeline_id,
     *       message_content: text,
     *       repo_url      : repo.url_input,
     *       github_pat    : github_auth.pat,   // jangan log/tampilkan ini
     *     })
     *   }).then(r => r.json());
     *
     * Kemudian buka SSE:
     *   const es = new EventSource(`/api/tasks/${task.task_id}/stream`);
     *   …(lihat mockSSEStream untuk event handling)
     *
     * Respons akhir agent dikirim via event 'done' atau endpoint terpisah:
     *   GET /api/tasks/{task_id}/result
     */
    async function sendMessage() {
      const text = input_text.value.trim();
      if (!text || is_loading.value) return;

      /* 1. User message */
      messages.value.push(buildUserMsg(text));
      input_text.value = '';
      if (textarea.value) textarea.value.style.height = 'auto';
      session_stats.total_tasks++;
      await scrollToBottom();

      /* 2. Orchestrator typing */
      is_loading.value = true;
      const orch_typing = buildTypingMsg('orchestrator', 'Orchestrator', '⬡');
      messages.value.push(orch_typing);
      addLog('', `Task dispatched → ${active_pipeline.value.pipeline_name}`);
      await scrollToBottom();

      /* 3. SSE stream (mock) — jalan paralel */
      const stream_promise = mockSSEStream();

      await delay(rand(900, 1500));

      /* 4. Pick agent */
      const picked_agent = pickRand(agents.value);
      setAgentStatus(picked_agent.agent_id, 'busy');

      /* 5. Replace orchestrator typing → response */
      const orch_idx = messages.value.indexOf(orch_typing);
      messages.value[orch_idx] = {
        ...orch_typing,
        is_typing:       false,
        message_content: `Menerima tugas dari pipeline "${active_pipeline.value.pipeline_name}". Mendistribusikan ke ${picked_agent.agent_name}…`,
        pipeline_trace: [
          { step_agent: 'Orchestrator',          step_output: 'Parsed intent', step_color: '#6ee7b7', duration_ms: rand(40, 140) },
          { step_agent: picked_agent.agent_name, step_output: 'Assigned',      step_color: picked_agent.color, duration_ms: rand(10, 60) },
        ],
        created_at: nowTime(),
      };
      await scrollToBottom();
      await delay(rand(700, 1500));

      /* 6. Agent typing */
      const agent_typing = buildTypingMsg(
        'agent',
        picked_agent.agent_name,
        picked_agent.agent_name.slice(0, 2).toUpperCase(),
        picked_agent.agent_id,
      );
      messages.value.push(agent_typing);
      addLog('', `${picked_agent.agent_name} processing…`);
      await scrollToBottom();
      await delay(rand(1200, 2200));

      /* 7. Determine if this is a code task → generate commit result */
      const is_code_task   = active_pipeline.value.pipeline_id === 'pip-003'
        || text.toLowerCase().includes('fix') || text.toLowerCase().includes('refactor')
        || text.toLowerCase().includes('code') || text.toLowerCase().includes('bug');

      const is_contributor = repo.info && repo.info.is_contributor;

      let commit_result = null;
      if (is_code_task && github_auth.is_authenticated) {
        if (is_contributor) {
          /* Contributor: bisa push branch baru */
          const branch_name    = `ai-fix/${Date.now()}`;
          const parsed         = repo.info ? parseGithubUrl(repo.url_input) : null;
          const repo_base      = parsed ? `https://github.com/${parsed.owner}/${parsed.repo_name}` : 'https://github.com/owner/repo';

          commit_result = {
            branch_name,
            commit_sha:     rand(100000, 999999).toString(16),
            commit_message: `fix: AI-generated improvements for task "${text.slice(0, 50)}"`,
            commits_url:    `${repo_base}/commits/${branch_name}`,
            pr_url:         `${repo_base}/compare/${branch_name}?expand=1`,
          };
          last_commit_result.value = commit_result;
          addLog('success', `Branch pushed: ${branch_name}`);
        } else {
          /* Bukan contributor: tidak bisa push */
          addLog('warn', 'Cannot push: user is not a contributor');
        }
      }

      /* 8. Agent response texts */
      const AGENT_RESPONSES = [
        () => `Saya telah menganalisis permintaan "${text.slice(0, 60)}…"\n\nHasil menunjukkan 3 sub-task utama. Rencana eksekusi sudah disiapkan dengan estimasi waktu ~4 menit.`,
        () => `Permintaan diterima. Ditemukan referensi dari 12 sumber terpercaya. Data menunjukkan tren positif 6 bulan terakhir dengan growth rate 23%.`,
        () => is_contributor
          ? `Kode telah di-generate dan diperbaiki. Branch baru sudah di-push ke repository. Silahkan review pull request untuk merge ke main.`
          : `Kode telah dianalisis dan perbaikan diidentifikasi. Karena kamu bukan contributor, patch tidak dapat di-push otomatis. Salin output di bawah untuk apply manual.`,
        () => `Review selesai. Ditemukan 2 improvement: (1) optimasi query endpoint utama, (2) tambahkan error handling untuk edge case. Tidak ada critical bug. ✓`,
      ];
      const resp_fn = pickRand(AGENT_RESPONSES);

      /* 9. Replace agent typing → final response */
      const agent_idx = messages.value.indexOf(agent_typing);
      messages.value[agent_idx] = {
        ...agent_typing,
        is_typing:       false,
        message_content: resp_fn(),
        commit_result,
        created_at: nowTime(),
      };

      setAgentStatus(picked_agent.agent_id, 'idle');
      token_usage.value[0].tokens_used += rand(200, 1000);
      addLog('success', `${picked_agent.agent_name} completed task`);
      is_loading.value = false;
      await Promise.all([scrollToBottom(), stream_promise]);
    }

    /* ════════════════════════════════════════
       BACKGROUND SIMULATION
       ════════════════════════════════════════ */

    onMounted(() => {
      setInterval(() => {
        active_tasks.value.forEach((t) => {
          t.progress_percent = Math.min(100, t.progress_percent + rand(0, 4));
          if (t.progress_percent >= 100) t.progress_percent = 0;
        });
      }, 2000);
    });

    /* ── Expose to template ── */
    return {
      /* state */
      github_auth, repo, sse_stream, last_commit_result,
      agents, pipelines, active_pipeline, selected_agent_id,
      messages, session_stats, active_tasks, token_usage, system_logs,
      suggestions, input_text, is_loading, modal,
      /* refs */
      messageContainer, sseLogArea, textarea,
      /* methods */
      connectGithub, revokeGithub, analyseRepo,
      sendMessage, clearChat, useSuggestion, autoResize, downloadReport,
      getAgentColor, avatarClass, bubbleClass, agentBubbleStyle, tokenBarWidth,
    };
  },
}).mount('#app');