#!/usr/bin/env python3
"""
cc-ci orchestrator launcher — start/resume the orchestrator session in tmux.

The orchestrator is the long-lived supervisory session: it watches the Builder/Adversary
loops, reads their logs/STATUS, edits the plan/prompts, restarts stuck loops, and owns
the VM-level fallback. It is SEPARATE from the loops that launch.py manages.

Usage:
  launch-orchestrator.py start     resume the persistent session (default)
  launch-orchestrator.py fresh     start a NEW session (no --resume)
  launch-orchestrator.py stop      kill the tmux session (conversation persists on disk)
  launch-orchestrator.py status    show session state
  launch-orchestrator.py attach    tmux attach to the session

Env:
  LOOP_BACKEND   claude (default) | opencode
  LOOP_MODEL     model flag, e.g. "sonnet" or "tinfoil/deepseek-v4-pro"

  claude backend:
    CLAUDE_BIN          claude
    REMOTE_CONTROL      1 (viewable at claude.ai/code)
    ORCH_SESSION_ID     override the resume id (else read from $ID_FILE)
    ORCH_ID_FILE        $LOG_DIR/.orchestrator-session-id
    ORCH_STARTUP_PROMPT startup nudge injected as the first turn after --resume

  opencode backend:
    OPENCODE_BIN        /home/loops/.local/bin/opencode
    OPENCODE_SERVER     http://127.0.0.1:4096
    (no --resume equivalent; STARTUP_PROMPT is sent as the initial message;
     the session title in the web UI is the SESSION name)
"""

import os, sys, subprocess
from datetime import datetime
from pathlib import Path

# ── config ────────────────────────────────────────────────────────────────────

SESSION  = os.environ.get("ORCH_SESSION", "cc-ci-orchestrator-vm")
WORKDIR  = os.environ.get("ORCH_DIR",    "/srv/cc-ci")
LOG_DIR  = os.environ.get("LOG_DIR",     "/srv/cc-ci/.cc-ci-logs")

BACKEND    = os.environ.get("LOOP_BACKEND", "claude")
LOOP_MODEL = os.environ.get("LOOP_MODEL",   "")

# claude-specific
CLAUDE_BIN     = os.environ.get("CLAUDE_BIN",   "claude")
CLAUDE_FLAGS   = os.environ.get("CLAUDE_FLAGS", "--dangerously-skip-permissions")
REMOTE_CONTROL = os.environ.get("REMOTE_CONTROL", "1") == "1"
DEFAULT_ID     = "c746050a-af11-409d-87ba-c05268e2e5d1"
ID_FILE        = os.environ.get("ORCH_ID_FILE", f"{LOG_DIR}/.orchestrator-session-id")
STARTUP_PROMPT = os.environ.get("ORCH_STARTUP_PROMPT", (
    "STARTUP (auto-launch): you are the cc-ci orchestrator, just (re)launched, likely after a "
    "reboot. Do your AGENTS.md On-startup routine NOW: read cc-ci-plan/REBOOTS.md and run "
    "cc-ci-plan/launch.py status, then send a proactive PushNotification that you are online "
    "with the current phase and reboot count, and confirm cc-ci-loops.service brought the loops "
    "+ watchdog back (relaunch with RESUME_PHASE=1 cc-ci-plan/launch.py start if not). "
    "Also read cc-ci-plan/JOURNAL.md for recent context before resuming supervision."
))

# opencode-specific
OPENCODE_BIN    = os.environ.get("OPENCODE_BIN",    "/home/loops/.local/bin/opencode")
OPENCODE_SERVER = os.environ.get("OPENCODE_SERVER", "http://127.0.0.1:4096")

# ── helpers ───────────────────────────────────────────────────────────────────

def log(msg):
    ts = datetime.now().strftime("%H:%M:%S")
    print(f"[orchestrator {ts}] {msg}", flush=True)

def die(msg):
    log(f"ERROR: {msg}")
    sys.exit(1)

def session_alive():
    return subprocess.run(
        ["tmux", "has-session", "-t", SESSION], capture_output=True
    ).returncode == 0

def resume_id():
    sid = os.environ.get("ORCH_SESSION_ID")
    if sid:
        return sid
    try:
        v = Path(ID_FILE).read_text().strip()
        return v or DEFAULT_ID
    except FileNotFoundError:
        return DEFAULT_ID

# ── launch ────────────────────────────────────────────────────────────────────

def start(mode="resume"):
    import shutil
    if not shutil.which("tmux"):
        die("tmux not found")
    Path(LOG_DIR).mkdir(parents=True, exist_ok=True)

    if session_alive():
        log(f"{SESSION} already running — leaving it (use 'stop' first to relaunch)")
        return

    model_flag = f"--model '{LOOP_MODEL}'" if LOOP_MODEL else ""

    if BACKEND == "claude":
        if not shutil.which(CLAUDE_BIN):
            die(f"claude CLI not found — set CLAUDE_BIN (currently: {CLAUDE_BIN})")
        if not Path(ID_FILE).exists():
            Path(ID_FILE).write_text(DEFAULT_ID)

        rc     = f"--remote-control '{SESSION}'" if REMOTE_CONTROL else ""
        resume = f"--resume '{resume_id()}'" if mode == "resume" else ""
        prompt = f"'{STARTUP_PROMPT}'" if STARTUP_PROMPT else ""
        cmd    = f"{CLAUDE_BIN} {resume} {rc} {model_flag} {CLAUDE_FLAGS} {prompt}"
        detail = f"resume={resume_id()}" if mode == "resume" else "fresh"
        log(f"starting {SESSION} (backend=claude, {detail}, model={LOOP_MODEL or 'default'})")

    elif BACKEND == "opencode":
        if not Path(OPENCODE_BIN).exists():
            die(f"opencode not found at {OPENCODE_BIN}")
        # No --resume equivalent in opencode; STARTUP_PROMPT orients the new session.
        # The session title in the web UI identifies it as the orchestrator.
        prompt = STARTUP_PROMPT or (
            "You are the cc-ci orchestrator. Read /srv/cc-ci/AGENTS.md and "
            "cc-ci-plan/JOURNAL.md for context, then resume supervising the loops."
        )
        cmd = (
            f"set -a; . /srv/cc-ci/.testenv; set +a; "
            f"{OPENCODE_BIN} {model_flag} run --attach '{OPENCODE_SERVER}' "
            f"--title '{SESSION}' '{prompt}'"
        )
        log(f"starting {SESSION} (backend=opencode, model={LOOP_MODEL or 'default'})")
        log(f"  visible at http://oc.commoninternet.net (tailnet only)")
    else:
        die(f"unknown LOOP_BACKEND '{BACKEND}' — use 'claude' or 'opencode'")

    subprocess.run(["tmux", "new-session", "-d", "-s", SESSION, "-c", WORKDIR, cmd])
    subprocess.run(["tmux", "pipe-pane", "-o", "-t", SESSION,
                    f"cat >> '{LOG_DIR}/{SESSION}.log'"])
    log(f"started. attach: tmux attach -t {SESSION}")

# ── main ──────────────────────────────────────────────────────────────────────

def main():
    cmd = sys.argv[1] if len(sys.argv) > 1 else "start"

    if cmd == "start":
        start("resume")
    elif cmd == "fresh":
        start("fresh")
    elif cmd == "stop":
        if session_alive():
            log(f"killing {SESSION}")
            subprocess.run(["tmux", "kill-session", "-t", SESSION])
        else:
            log(f"{SESSION} not running")
    elif cmd == "status":
        state = "RUNNING" if session_alive() else "stopped"
        log(f"{SESSION}: {state}")
        subprocess.run(
            f"ps -eo pid,etime,args | grep '[r]emote-control {SESSION}' || true",
            shell=True)
        if BACKEND == "claude":
            log(f"resume id: {resume_id()}  (file: {ID_FILE})")
        log(f"backend: {BACKEND}  model: {LOOP_MODEL or '<default>'}")
    elif cmd == "attach":
        os.execvp("tmux", ["tmux", "attach", "-t", SESSION])
    else:
        backend_note = (
            "claude:   --resume preserves conversation across reboots; viewable at claude.ai/code\n"
            "  opencode: fresh session each launch (no --resume); viewable at http://oc.commoninternet.net"
        )
        print(f"""cc-ci orchestrator launcher

  launch-orchestrator.py start    resume the persistent session (default)
  launch-orchestrator.py fresh    start a new session (no --resume)
  launch-orchestrator.py stop     kill the tmux session
  launch-orchestrator.py status   show session state
  launch-orchestrator.py attach   tmux attach

Backend: {BACKEND}  (LOOP_BACKEND env var)
Model:   {LOOP_MODEL or '<backend default>'}  (LOOP_MODEL env var)
Session: {SESSION}  cwd={WORKDIR}
  {backend_note}
""")


if __name__ == "__main__":
    main()