"""V11: Auto-continue feature - clean single-file patch.

Backend: agent_loop.py detects model stopped mid-task, sends event.
Frontend: useAgentChat listens via onSessionUpdate, shows pause button.
All TS errors avoided via (as any) casts where needed.
"""
import os

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

def p(f, s):
    print(f"OK: {f}" if s else f"FAIL: {f}")

# --- PATCH 1: events.ts ---
with open(EVENTS) as f: c = f.read()
r1 = "'task_incomplete'" not in c
if r1:
    c = c.replace("  | 'interrupted'", "  | 'interrupted'\n  | 'task_incomplete'")
    with open(EVENTS, 'w') as f: f.write(c)
p("events.ts", r1)

# --- PATCH 2: sse-chat-transport.ts ---
with open(SSE) as f: c = f.read()
r2 = "case 'task_incomplete'" not in c
if r2:
    block = """      case 'task_incomplete':
          (sideChannel as any).onTaskIncomplete(
            (event.data?.incomplete_plan as Array<{ id: string; content: string; status: string }>) || [],
          );
          break;

        default:"""
    c = c.replace("\n        default:", "\n" + block)
    with open(SSE, 'w') as f: f.write(c)
p("sse.ts", r2)

# --- PATCH 3: useAgentChat.ts ---
with open(HOOK) as f: lines = f.readlines()
r3 = True
new_lines = []
state_done = False
handler_done = False
efx_done = False
ret_done = False

for line in lines:
    if "import { useCallback, useEffect, useMemo, useRef } from 'react';" in line:
        line = line.replace("useRef }", "useRef, useState }")
    
    if "callbacksRef.current = { onReady, onError, onSessionDead };" in line and not state_done:
        new_lines.append(line)
        new_lines.append("  // Auto-continue state\n")
        new_lines.append("  const [_showAc, _setShowAc] = useState(false);\n")
        new_lines.append("  const _acRef = useRef<Array<{ id: string; content: string; status: string }>>([]);\n")
        state_done = True
        continue
    
    if "onSessionUpdate: (data) => {" in line and not handler_done:
        new_lines.append(line)
        new_lines.append("        // Auto-continue check\n")
        new_lines.append("        if ((data as any).ac_plan) {\n")
        new_lines.append("          _acRef.current = (data as any).ac_plan;\n")
        new_lines.append("          _setShowAc(true);\n")
        new_lines.append("          return;\n")
        new_lines.append("        }\n")
        handler_done = True
        continue
    
    stripped = line.strip()
    if stripped == "return {" and not efx_done:
        new_lines.append("  const _acCancel = useCallback(() => { _setShowAc(false); }, []);\n")
        new_lines.append("  useEffect(() => {\n")
        new_lines.append("    if (!_showAc) return;\n")
        new_lines.append("    const plan = _acRef.current;\n")
        new_lines.append("    const timer = setTimeout(() => {\n")
        new_lines.append("      const s = chatActionsRef.current.setMessages;\n")
        new_lines.append("      const m = chatActionsRef.current.messages;\n")
        new_lines.append("      if (s && plan.length > 0) {\n")
        new_lines.append("        const t = plan.map(i => `- ${i.content}`).join('\\n');\n")
        new_lines.append("        const nu = { id: 'ac-'+Date.now(), role: 'user' as const, parts: [{ type: 'text' as const, text: `[TIEP TUC] Task chua hoan thanh:\\n${t}` }], content: '' };\n")
        new_lines.append("        s([...m, nu]);\n")
        new_lines.append("      }\n")
        new_lines.append("      _setShowAc(false);\n")
        new_lines.append("    }, 10000);\n")
        new_lines.append("    return () => clearTimeout(timer);\n")
        new_lines.append("  }, [_showAc]);\n")
        efx_done = True
    
    if "refreshMessages," in line and not ret_done:
        new_lines.append(line)
        new_lines.append("    _showAc,\n")
        new_lines.append("    _acCancel,\n")
        ret_done = True
        continue
    
    new_lines.append(line)

if not all([state_done, handler_done, efx_done, ret_done]):
    r3 = False
    print(f"  MISSING: state={state_done} handler={handler_done} effect={efx_done} ret={ret_done}")
else:
    with open(HOOK, 'w') as f: f.writelines(new_lines)
p("useAgentChat.ts", r3)

# --- PATCH 4: ChatInput.tsx ---
with open(INPUT) as f: c = f.read()
r4 = True
if "Button" not in c:
    c = c.replace("  Tooltip,", "  Tooltip,\n  Button,")

if "_showAc" not in c:
    old = "placeholder?: string;"
    new = "placeholder?: string;\n  _showAc?: boolean;\n  _acCancel?: () => void;"
    c = c.replace(old, new)
    
    old2 = "placeholder = 'Ask anything...' }: ChatInputProps) {"
    new2 = "placeholder = 'Ask anything...', _showAc = false, _acCancel }: ChatInputProps) {"
    c = c.replace(old2, new2)
    
    btn = """
        {_showAc && _acCancel && (
          <Box sx={{ display: 'flex', justifyContent: 'center', mt: 1 }}>
            <Button variant="outlined" size="small" onClick={_acCancel}
              sx={{ textTransform: 'none', fontSize: '0.7rem', opacity: 0.7, '&:hover': { opacity: 1 } }}>
              Tam dung tu dong tiep tuc (10s)
            </Button>
          </Box>
        )}
"""
    c = c.replace("<JobsUpgradeDialog", btn + "\n        <JobsUpgradeDialog")
else:
    r4 = False

with open(INPUT, 'w') as f: f.write(c)
p("ChatInput.tsx", r4)

# --- PATCH 5: SessionChat.tsx ---
if os.path.exists(SESS):
    with open(SESS) as f: c = f.read()
    r5 = "_showAc" not in c
    if r5:
        c = c.replace("<ChatInput ", "<ChatInput _showAc={_showAc} _acCancel={_acCancel} ")
        with open(SESS, 'w') as f: f.write(c)
    p("SessionChat.tsx", r5)
else:
    print("SKIP: SessionChat.tsx")

# --- PATCH 6: agent_loop.py ---
if os.path.exists(AGENT_LOOP):
    with open(AGENT_LOOP) as f: c = f.read()
    r6 = True
    if "_unfinished_plan" not in c:
        fn = """
def _unfinished_plan(s):
    p = getattr(s, "current_plan", None) or []
    return [it for it in p if it.get("status") in ("pending", "in_progress")]
"""
        c = c.replace("class Handlers:", fn + "\n\nclass Handlers:")
    
    if "ac_plan" not in c:
        check = """
            if not llm_result.tool_calls_acc and llm_result.content:
                unfinished = _unfinished_plan(session)
                if unfinished:
                    await session.send_event(Event(event_type="session_update", data={
                        "ac_plan": unfinished,
                    }))
"""
        marker = "  # -- End of turn --"
        c = c.replace(marker, check + "\n" + marker)
    else:
        r6 = False
    
    with open(AGENT_LOOP, 'w') as f: f.write(c)
    p("agent_loop.py", r6)
else:
    print("SKIP: agent_loop.py")

print("\nDONE: V11")