"""MetaAgent — Orchestrator agent for VoIdea.

Configurable from admin panel:
- cron_schedule: str (default "0 9 * * 1,4")
- weights: dict[agent_name, float]
- sources_count: int (default 10)
- auto_create: bool (default True)

Runs a subset of agents based on weights and collects reports.
"""

import json
from datetime import datetime, timezone
from typing import Any

from app.agents.base import AgentResult, AgentStatus, AgentTrigger, BaseAgent


def _get_registry():
    from app.agents.registry import registry
    return registry


DEFAULT_CONFIG: dict[str, Any] = {
    "cron_schedule": "0 9 * * 1,4",
    "weights": {},
    "sources_count": 10,
    "auto_create": True,
}


class MetaAgent(BaseAgent):
    """Orchestrator agent that coordinates other agents."""

    name = "meta_agent"
    version = "1.0.0"
    description = "Orchestrates other agents based on configurable schedule and weights"
    triggers = [
        AgentTrigger.MANUAL,
        AgentTrigger.CRON,
        AgentTrigger.API,
    ]

    def __init__(self, config: dict[str, Any] | None = None):
        super().__init__()
        self._config = {**DEFAULT_CONFIG, **(config or {})}

    @property
    def config(self) -> dict[str, Any]:
        return self._config

    @config.setter
    def config(self, value: dict[str, Any]) -> None:
        self._config = {**DEFAULT_CONFIG, **value}

    async def run(self, context: dict[str, Any] | None = None) -> AgentResult:
        """Execute meta-agent orchestration.

        Context can contain:
        - action: str (orchestrate | report | status) — default "orchestrate"
        - target_agents: list[str] — subset of agents to run (default: all)
        - sources_count: int — override config
        """
        await self.set_running("orchestration")

        try:
            action = (context or {}).get("action", "orchestrate")

            if action == "status":
                return await self._get_status()
            elif action == "report":
                return await self._generate_report()
            else:
                return await self._orchestrate(context or {})

        except Exception as e:
            await self.set_error(str(e))
            return AgentResult(
                success=False,
                message=f"MetaAgent failed: {str(e)}",
                errors=[str(e)],
            )

    async def health_check(self) -> bool:
        return True

    async def _orchestrate(self, context: dict[str, Any]) -> AgentResult:
        """Run target agents and collect results."""
        target_agents: list[str] | None = context.get("target_agents")
        sources_count = context.get("sources_count", self._config["sources_count"])
        weights = self._config.get("weights", {})

        all_agents = _get_registry().list_agents()
        if not all_agents:
            await self.set_idle()
            return AgentResult(
                success=True,
                message="No agents registered",
                data={"orchestrated": 0},
            )

        candidates = []
        for a in all_agents:
            name = a["name"]
            if name == self.name:
                continue
            weight = weights.get(name, 1.0)
            if weight <= 0:
                continue
            candidates.append((name, weight))

        if not candidates:
            candidates = [(a["name"], 1.0) for a in all_agents if a["name"] != self.name]

        if target_agents:
            candidates = [c for c in candidates if c[0] in target_agents]

        max_sources = min(sources_count, len(candidates))
        selected = candidates[:max_sources]

        results: dict[str, Any] = {}
        for name, _weight in selected:
            try:
                result = await _get_registry().run_agent(name, {"trigger": "meta_agent"})
                results[name] = {
                    "success": result.success,
                    "message": result.message,
                    "duration_ms": result.duration_ms,
                }
            except Exception as e:
                results[name] = {
                    "success": False,
                    "message": str(e),
                }

        success_count = sum(1 for r in results.values() if r["success"])
        total_duration = sum(r.get("duration_ms", 0) for r in results.values())

        await self.set_idle()
        return AgentResult(
            success=True,
            message=f"Orchestrated {len(results)} agents ({success_count} ok)",
            data={
                "orchestrated": len(results),
                "success_count": success_count,
                "agents": results,
                "total_duration_ms": total_duration,
                "config": {
                    "cron_schedule": self._config["cron_schedule"],
                    "sources_count": sources_count,
                    "auto_create": self._config["auto_create"],
                },
            },
        )

    async def _generate_report(self) -> AgentResult:
        """Generate summary report of all agent statuses."""
        all_agents = _get_registry().list_agents()
        metrics = _get_registry().get_metrics_all()

        return AgentResult(
            success=True,
            message=f"Report: {len(all_agents)} agents",
            data={
                "agents": all_agents,
                "metrics": metrics,
                "generated_at": datetime.now(timezone.utc).isoformat(),
            },
        )

    async def _get_status(self) -> AgentResult:
        return AgentResult(
            success=True,
            message="Meta-agent operational",
            data={
                "status": self.status.value,
                "config": self._config,
                "last_run": self._last_run.isoformat() if self._last_run else None,
            },
        )