"""
OpenClaw CLI integration — async wrapper for spawning agents.
Replaces the synchronous subprocess-based spawn_agent() from foxy-autopilot.py.
"""

import asyncio
import logging
import platform
from typing import Optional

from app.config import settings

log = logging.getLogger("foxy.openclaw")


# ─── Agent Labels ──────────────────────────────────────────────────────────────

AGENT_LABELS = {
    "Foxy-Conductor": "foxy-conductor",
    "Foxy-Architect": "foxy-architect",
    "Foxy-Dev":       "foxy-dev",
    "Foxy-UIUX":      "foxy-uiux",
    "Foxy-QA":        "foxy-qa",
    "Foxy-Admin":     "foxy-admin",
}


# ─── Spawn Command Detection ──────────────────────────────────────────────────

_detected_command: Optional[list[str]] = None


async def _run_help(args: list[str], timeout: int = 8) -> str:
    """Run a help command and return its output."""
    try:
        proc = await asyncio.create_subprocess_exec(
            *args,
            stdout=asyncio.subprocess.PIPE,
            stderr=asyncio.subprocess.PIPE,
        )
        stdout, stderr = await asyncio.wait_for(proc.communicate(), timeout=timeout)
        return (stdout.decode() + stderr.decode()).lower()
    except (asyncio.TimeoutError, FileNotFoundError):
        return ""
    except Exception:
        return ""


async def detect_openclaw_syntax() -> Optional[list[str]]:
    """
    Auto-detect the correct openclaw CLI syntax for spawning agents.
    Returns a template list like ["openclaw", "agent", "--agent", "{agent}", "--task", "{task}"]
    """
    global _detected_command

    candidates = [
        (
            ["openclaw", "agent", "--help"],
            ["openclaw", "agent", "--agent", "{agent}", "--task", "{task}"],
            ["agent", "task"],
        ),
        (
            ["openclaw", "agent", "--help"],
            ["openclaw", "agent", "--agent", "{agent}", "--message", "{task}"],
            ["agent", "message"],
        ),
        (
            ["openclaw", "agents", "run", "--help"],
            ["openclaw", "agents", "run", "--agent", "{agent}", "--task", "{task}"],
            ["agent", "task"],
        ),
        (
            ["openclaw", "agents", "spawn", "--help"],
            ["openclaw", "agents", "spawn", "--agent", "{agent}", "--task", "{task}"],
            ["agent", "task"],
        ),
    ]

    for help_cmd, spawn_template, keywords in candidates:
        output = await _run_help(help_cmd)
        if not output:
            continue
        if all(kw in output for kw in keywords):
            log.info(f"OpenClaw syntax detected: {' '.join(spawn_template[:5])}")
            _detected_command = spawn_template
            return spawn_template

    log.warning("No known openclaw syntax detected")
    return None


def build_spawn_cmd(template: list[str], agent_label: str, task_msg: str) -> list[str]:
    """Build the actual command by replacing placeholders."""
    return [
        t.replace("{agent}", agent_label).replace("{task}", task_msg)
        for t in template
    ]


# ─── Agent Spawning ───────────────────────────────────────────────────────────


async def spawn_agent(
    agent_name: str,
    task_message: str,
) -> Optional[asyncio.subprocess.Process]:
    """
    Spawn an OpenClaw agent asynchronously.
    Returns the Process object if successful, None on failure.
    """
    global _detected_command

    if _detected_command is None:
        _detected_command = await detect_openclaw_syntax()
        if _detected_command is None:
            log.error("Cannot spawn agent — openclaw syntax not detected")
            return None

    agent_label = AGENT_LABELS.get(agent_name, agent_name.lower().replace(" ", "-"))
    cmd = build_spawn_cmd(_detected_command, agent_label, task_message)

    log.info(f"Spawning {agent_name} (label: {agent_label})")
    cmd_display = " ".join(c if len(c) < 50 else c[:47] + "..." for c in cmd)
    log.info(f"CMD: {cmd_display}")

    try:
        proc = await asyncio.create_subprocess_exec(
            *cmd,
            stdout=asyncio.subprocess.PIPE,
            stderr=asyncio.subprocess.PIPE,
            cwd=settings.OPENCLAW_WORKSPACE,
        )

        # Wait briefly to check for immediate failure
        await asyncio.sleep(3)
        if proc.returncode is not None and proc.returncode != 0:
            stderr = await proc.stderr.read()
            err_msg = stderr.decode()[:400]
            log.error(f"Agent spawn failed immediately (code {proc.returncode}): {err_msg}")
            return None

        log.info(f"Agent {agent_name} spawned (PID: {proc.pid})")
        return proc

    except FileNotFoundError:
        log.error("'openclaw' not found in PATH")
        return None
    except Exception as e:
        log.error(f"Error spawning {agent_name}: {e}")
        return None


def build_task_for_agent(
    agent_name: str,
    project_name: str,
    project_slug: str,
    description: str,
    test_mode: bool = False,
) -> str:
    """Build the task/message string sent to an agent via OpenClaw."""
    base = (
        f"Tu es {agent_name}. "
        f"Projet actif : {project_name} (slug: {project_slug}). "
        f"{'MODE TEST : simule ton travail sans produire de code réel. ' if test_mode else ''}"
        f"Connecte-toi à l'API Foxy Dev Team pour lire l'état du projet et mettre à jour tes résultats. "
    )

    instructions = {
        "Foxy-Conductor": (
            base
            + "MISSION : Analyse la description du projet. "
            + "Crée les tâches initiales, puis change le statut à l'étape suivante du workflow. "
        ),
        "Foxy-Architect": (
            base
            + "MISSION : Produis l'architecture technique (ADR), "
            + "découpe en tickets avec assigned_to, acceptance_criteria, depends_on. "
        ),
        "Foxy-Dev": (
            base
            + "MISSION : Prends les tâches PENDING assignées à toi. "
            + "Écris le code, commit sur branche task/TASK-XXX via Gitea. "
        ),
        "Foxy-UIUX": (
            base
            + "MISSION : Prends les tâches UI/PENDING assignées à toi. "
            + "Crée les composants React/TypeScript, commit sur branche task/TASK-XXX-ui. "
        ),
        "Foxy-QA": (
            base
            + "MISSION : Audite toutes les tâches IN_REVIEW. "
            + "Approuve ou rejette avec feedback détaillé. "
        ),
        "Foxy-Admin": (
            base
            + "MISSION : Déploie toutes les tâches READY_FOR_DEPLOY. "
            + "Backup avant déploiement. Génère le rapport final si tout est DONE. "
        ),
    }

    return instructions.get(agent_name, base + "Exécute ta mission.")