"""
Agent 编排层 —— 调度四层架构完成分析

Layer 1:   Planner    意图规划
Layer 1.5: Playbook   预设匹配
Layer 2:   Explorer   自适应探索
Layer 3:   Insight    异常洞察（与图表并行）
Layer 4:   Context    上下文记忆
Output:    Reporter + Chart + Consolidator
"""
import os
from typing import Optional
from concurrent.futures import ThreadPoolExecutor, as_completed

from core.config import DB_PATH, MAX_EXPLORATION_ROUNDS, PLAYBOOK_DIR, CHARTS_DIR
from core.schema import extract_schema, schema_to_text
from core.sandbox import SandboxExecutor
from layers.planner import Planner
from layers.explorer import Explorer
from layers.insights import InsightEngine, quick_detect
from layers.context import ContextManager
from layers.playbook import PlaybookManager
from output.reporter import ReportGenerator
from output.chart import ChartGenerator
from output.consolidator import ReportConsolidator


class DataAnalysisAgent:
    """数据分析 Agent —— 四层架构编排"""

    def __init__(self, db_path: str = DB_PATH):
        self.db_path = db_path
        self.schema = extract_schema(db_path)
        self.schema_text = schema_to_text(self.schema)
        self.executor = SandboxExecutor(db_path)

        # 各层组件
        self.planner = Planner()
        self.explorer = Explorer(self.executor)
        self.insight_engine = InsightEngine()
        self.reporter = ReportGenerator()
        self.context = ContextManager()
        self.playbook_mgr = PlaybookManager(PLAYBOOK_DIR)
        self.chart_gen = ChartGenerator(output_dir=CHARTS_DIR)
        self.consolidator = ReportConsolidator()

        # 累积图表
        self._all_charts: list[dict] = []

        # 自动生成 Playbook
        if not self.playbook_mgr.playbooks:
            print("\n🤖 [Playbook] 未发现预设剧本，AI 自动生成中...")
            generated = self.playbook_mgr.auto_generate(self.schema_text, save_dir=PLAYBOOK_DIR)
            if generated:
                print(f"   ✅ 自动生成 {len(generated)} 个剧本：")
                for pb in generated:
                    print(f"      📋 {pb.name} — {pb.description}")
            else:
                print("   ⚠️ 自动生成失败，将使用纯自适应模式")

    def analyze(self, question: str, max_rounds: Optional[int] = None) -> str:
        """完整分析流程"""
        max_rounds = max_rounds or MAX_EXPLORATION_ROUNDS

        print(f"\n{'='*60}")
        print(f"📊 {question}")
        print(f"{'='*60}")

        # Layer 0: 上下文
        prev = self.context.get_context_for(question)
        if prev:
            print("📎 发现历史上下文")

        # Layer 1: 意图规划
        print("\n🎯 [Layer 1] 意图规划...")
        plan = self.planner.plan(question, self.schema_text)
        # 注入历史上下文到 plan 中，让 Explorer 能看到
        if prev:
            plan["_prev_context"] = prev
        print(f"   类型: {plan.get('analysis_type', 'unknown')}")
        print(f"   维度: {', '.join(plan.get('dimensions', [])) or '自动发现'}")
        rationale = plan.get("rationale", "")
        print(f"   理由: {rationale[:80]}{'...' if len(rationale) > 80 else ''}")

        # Layer 1.5: Playbook 匹配
        playbook_result = None
        if self.playbook_mgr.playbooks:
            print(f"\n📋 [Playbook] 匹配预设剧本 ({len(self.playbook_mgr.playbooks)} 个可用)...")
            playbook_result = self.playbook_mgr.match(plan, self.schema_text)
            if playbook_result:
                n = len(playbook_result.get("preset_queries", []))
                print(f"   ✅ 匹配: {playbook_result['playbook_name']} ({n} 条预设查询)")
            else:
                print("   ❌ 无匹配，走纯自适应路径")

        # Layer 2: 自适应探索
        print(f"\n🔍 [Layer 2] 自适应探索 (最多 {max_rounds} 轮)...")
        steps = self.explorer.explore(plan, self.schema_text, max_rounds=max_rounds, playbook_result=playbook_result)
        successful = sum(1 for s in steps if s.success)
        print(f"\n   完成: {len(steps)} 轮, {successful} 条成功查询")

        # Layer 3 + Charts: 并行执行洞察和图表生成
        print("\n🔎 [Layer 3] 异常洞察 + 📊 图表生成（并行）...")
        rule_alerts = quick_detect(steps)
        for alert in rule_alerts:
            print(f"   {alert}")

        insights = []
        charts = []

        with ThreadPoolExecutor(max_workers=2) as pool:
            future_insights = pool.submit(self.insight_engine.analyze, steps, question)
            future_charts = pool.submit(self.chart_gen.generate, steps, question)

            for future in as_completed([future_insights, future_charts]):
                try:
                    result = future.result()
                    if future == future_insights:
                        insights = result
                        if insights:
                            print(f"   🔎 发现 {len(insights)} 条洞察")
                        else:
                            print("   🔎 未发现异常")
                    else:
                        charts = result
                        if charts:
                            print(f"   📊 生成 {len(charts)} 张图表：")
                            for c in charts:
                                print(f"      🖼️ {c['title']} → {c['path']}")
                        else:
                            print("   📊 无需生成图表")
                except Exception as e:
                    print(f"   ⚠️ 并行任务出错: {e}")

        if charts:
            self._all_charts.extend(charts)

        # 生成报告
        print("\n📝 正在生成报告...")
        report = self.reporter.generate(question, plan, steps, insights, charts=charts)

        if insights:
            report += f"\n\n---\n\n{self.insight_engine.format_insights(insights)}"

        # Layer 4: 记录上下文
        self.context.add_session(question=question, plan=plan, steps=steps, insights=insights, report=report)

        return report

    def full_report(self, question: str = "") -> str:
        """整合所有历史分析为综合报告"""
        sessions = self.context.sessions
        if not sessions:
            return "（还没有分析记录，请先执行分析）"
        print(f"\n📑 整合 {len(sessions)} 次分析为综合报告...")
        report = self.consolidator.consolidate(sessions=sessions, question=question, charts=self._all_charts or None)
        print("   ✅ 综合报告生成完成")
        return report

    def get_schema(self) -> str:
        return self.schema_text

    def get_history(self) -> str:
        return self.context.get_history_summary()

    def get_audit(self) -> str:
        return self.executor.get_execution_summary()

    def clear_history(self):
        self.context.clear()
        self._all_charts.clear()

    def close(self):
        """释放资源"""
        self.executor.close()