"""V17: Auto-continue - perfect Python, exact marker matching"""

import os

EVENTS = "/source/frontend/src/types/events.ts"
SSE = "/source/frontend/src/lib/sse-chat-transport.ts"
HOOK = "/source/frontend/src/hooks/useAgentChat.ts"
INPUT = "/source/frontend/src/components/Chat/ChatInput.tsx"
SESS = "/source/frontend/src/components/SessionChat.tsx"
AGENT = "/app/agent/core/agent_loop.py"

print("Patching auto-continue V17...")

# --- events.ts ---
with open(EVENTS) as f:
    c = f.read()
if "'task_incomplete'" not in c:
    c = c.replace("  | 'interrupted'", "  | 'interrupted'\n  | 'task_incomplete'")
    with open(EVENTS, 'w') as f:
        f.write(c)
print("OK: events.ts")

# --- sse.ts ---
with open(SSE) as f:
    c = f.read()
if "case 'task_incomplete'" not in c:
    block = (
        "      case 'task_incomplete':\n"
        "          (sideChannel as any).onTaskIncomplete(\n"
        "            (event.data?.incomplete_plan as Array<{ id: string; content: string; status: string }>) || [],\n"
        "          );\n"
        "          break;\n\n"
        "        default:"
    )
    c = c.replace("\n        default:", "\n" + block)
    with open(SSE, 'w') as f:
        f.write(c)
print("OK: sse.ts")

# --- useAgentChat.ts ---
with open(HOOK) as f:
    content = f.read()

# Add useState import
if "useState" not in content:
    content = content.replace(
        "import { useCallback, useEffect, useMemo, useRef } from 'react';",
        "import { useCallback, useEffect, useMemo, useRef, useState } from 'react';"
    )

# Add state after callbacksRef
if "_showAc" not in content:
    state_code = (
        "  // Auto-continue state\n"
        "  const [_showAc, _setShowAc] = useState(false);\n"
        "  const _acRef = useRef<Array<{ id: string; content: string; status: string }>>([]);\n"
    )
    content = content.replace(
        "callbacksRef.current = { onReady, onError, onSessionDead };",
        "callbacksRef.current = { onReady, onError, onSessionDead };\n" + state_code
    )

# Add handler in onSessionUpdate
if "ac_plan" not in content:
    h = (
        "        // Auto-continue check\n"
        "        if ((data as any).ac_plan) {\n"
        "          _acRef.current = (data as any).ac_plan;\n"
        "          _setShowAc(true);\n"
        "          return;\n"
        "        }\n"
    )
    content = content.replace("onSessionUpdate: (data) => {", "onSessionUpdate: (data) => {\n" + h)

# ONLY match the unique two-line pattern: "  return {\n    messages: chat.messages,"
UNIQUE_MARKER = "  return {\n    messages: chat.messages,"
if UNIQUE_MARKER in content and "_acCancel" not in content:
    insert = (
        "  const _acCancel = useCallback(() => { _setShowAc(false); }, []);\n"
        "  useEffect(() => {\n"
        "    if (!_showAc) return;\n"
        "    const plan = _acRef.current;\n"
        "    const timer = setTimeout(() => {\n"
        "      const s = chatActionsRef.current.setMessages;\n"
        "      const m = chatActionsRef.current.messages;\n"
        "      if (s && plan.length > 0) {\n"
        "        const t = plan.map((i: { content: string }) => '- ' + i.content).join('\\\\n');\n"
        "        const nu = { id: 'ac-'+Date.now(), role: 'user' as const, parts: [{ type: 'text' as const, text: '[TIEP TUC] Task chua hoan thanh:\\\\n' + t }], content: '' };\n"
        "        s([...m, nu]);\n"
        "      }\n"
        "      _setShowAc(false);\n"
        "    }, 10000);\n"
        "    return () => clearTimeout(timer);\n"
        "  }, [_showAc]);\n\n"
    )
    content = content.replace(UNIQUE_MARKER, insert + UNIQUE_MARKER)
    
    # Add to return
    content = content.replace(
        "refreshMessages,\n  };",
        "refreshMessages,\n    _showAc,\n    _acCancel,\n  };"
    )

with open(HOOK, 'w') as f:
    f.write(content)
print("OK: useAgentChat.ts")

# --- ChatInput.tsx ---
with open(INPUT) as f:
    content = f.read()

# Add Button (check exact substring, not "IconButton")
if "  Button,\n" not in content and "  Button\n" not in content:
    content = content.replace(
        "  Tooltip,",
        "  Tooltip,\n  Button,"
    )

if "_showAc" not in content:
    content = content.replace(
        "placeholder?: string;",
        "placeholder?: string;\n  _showAc?: boolean;\n  _acCancel?: () => void;"
    )
    content = content.replace(
        "placeholder = 'Ask anything...' }: ChatInputProps) {",
        "placeholder = 'Ask anything...', _showAc = false, _acCancel }: ChatInputProps) {"
    )
    btn = (
        "        {_showAc && _acCancel && (\n"
        "          <Box sx={{ display: 'flex', justifyContent: 'center', mt: 1 }}>\n"
        "            <Button variant=\"outlined\" size=\"small\" onClick={_acCancel}\n"
        "              sx={{ textTransform: 'none', fontSize: '0.7rem', opacity: 0.7, '&:hover': { opacity: 1 } }}>\n"
        "              TAM_DUNG_TU_DONG_TIEP_TUC (10s)\n"
        "            </Button>\n"
        "          </Box>\n"
        "        )}\n"
    )
    content = content.replace("<JobsUpgradeDialog", btn + "        <JobsUpgradeDialog")

with open(INPUT, 'w') as f:
    f.write(content)
print("OK: ChatInput.tsx")

# --- SessionChat.tsx ---
if os.path.exists(SESS):
    with open(SESS) as f:
        c = f.read()
    if "_showAc" not in c:
        c = c.replace(
            "<ChatInput ",
            "<ChatInput _showAc={_showAc} _acCancel={_acCancel} "
        )
        with open(SESS, 'w') as f:
            f.write(c)
    print("OK: SessionChat.tsx")

# --- agent_loop.py ---
if os.path.exists(AGENT):
    with open(AGENT) as f:
        c = f.read()
    
    if "_unfinished_plan" not in c:
        fn = (
            "\n\ndef _unfinished_plan(s):\n"
            "    p = getattr(s, 'current_plan', None) or []\n"
            "    return [it for it in p if it.get('status') in ('pending', 'in_progress')]\n\n"
        )
        c = c.replace("class Handlers:", fn + "class Handlers:")
    
    if "ac_plan" not in c:
        check = (
            "\n            if not llm_result.tool_calls_acc and llm_result.content:\n"
            "                unfinished = _unfinished_plan(session)\n"
            "                if unfinished:\n"
            "                    await session.send_event(Event(event_type='session_update', data={\n"
            "                        'ac_plan': unfinished,\n"
            "                    }))\n"
        )
        c = c.replace("  # -- End of turn --", check + "  # -- End of turn --")
    
    with open(AGENT, 'w') as f:
        f.write(c)
    print("OK: agent_loop.py")
else:
    print("SKIP: agent_loop.py")

print("DONE: V17")