"""Helpers for seed project creation and SSTC recovery."""

from __future__ import annotations

import json
from typing import Optional

from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from app.models import Signal, Task, TruthNode, User
from app.services.auth import AuthService

PIXELLE_SIGNAL_CONTENTS = [
    (
        "HackerNews",
        "Pixelle-Video: An AI-powered automated short video generation platform with script-to-video automation",
        9.2,
        "critical",
    ),
    (
        "ProductHunt",
        "Pixelle-Video launches API for programmatic video content generation",
        8.5,
        "high",
    ),
    (
        "TechCrunch",
        "Pixelle-Video raises Series A funding to scale AI video infrastructure",
        7.8,
        "high",
    ),
]

PIXELLE_TASK_BLUEPRINT = [
    {"title": "Integrate Pixelle-Video API", "priority": "high", "hours": 8.0},
    {"title": "Design Video Workflow UI", "priority": "medium", "hours": 12.0},
    {"title": "Optimize Video Pipeline", "priority": "medium", "hours": 16.0},
]


def _build_signal_payload(impact_score: float) -> tuple[str, str]:
    strategic_analysis = json.dumps(
        {
            "decision_proposal": {
                "is_strategic": True,
                "threat_level": "HIGH",
                "lead_time_days": 14,
                "impact_score": impact_score,
                "recommendation": "立即集成 Pixelle-Video API 到主平台",
            },
            "competitiveness_radar": {
                "innovation": 85,
                "market_potential": 90,
                "technical_complexity": 75,
                "resource_intensity": 70,
            },
            "detected_tech_stacks": ["AI/ML", "Video Processing", "REST API"],
            "related_knowledge_nodes": [],
            "rag_context_used": 0,
        }
    )
    tasks_generated = json.dumps(
        [
            {"task_name": "Integrate Pixelle-Video API", "type": "backend", "estimated_hours": 8.0},
            {"task_name": "Design Video Workflow UI", "type": "frontend", "estimated_hours": 12.0},
            {"task_name": "Optimize Video Pipeline", "type": "ai_engineer", "estimated_hours": 16.0},
        ]
    )
    return strategic_analysis, tasks_generated


def build_pixelle_signals() -> list[Signal]:
    signals: list[Signal] = []
    for source, content, impact_score, priority in PIXELLE_SIGNAL_CONTENTS:
        signal = Signal(
            source=source,
            content=content,
            impact_score=impact_score,
            priority=priority,
            processed=True,
        )
        strategic_analysis, tasks_generated = _build_signal_payload(impact_score)
        signal.strategic_analysis = strategic_analysis
        signal.tasks_generated = tasks_generated
        signals.append(signal)
    return signals


async def ensure_seed_user(session: AsyncSession) -> User:
    user_result = await session.execute(select(User).limit(1))
    seed_user = user_result.scalar_one_or_none()
    if seed_user:
        return seed_user

    seed_user = User(
        username="boss",
        email="boss@pmflow.local",
        password_hash=AuthService.hash_password("boss123"),
        name="负责人",
        role="BOSS",
        status="active",
    )
    session.add(seed_user)
    await session.flush()
    return seed_user


async def create_pixelle_charter_and_tasks(
    session: AsyncSession,
    *,
    project_id: int,
    created_by: int,
    signal_ids: list[int],
) -> TruthNode:
    charter = TruthNode(
        node_type="charter",
        parent_id=None,
        project_id=project_id,
        created_by=created_by,
        title="Pixelle-Video 集成需求宪章",
        content={
            "rationale": "基于 HackerNews/ProductHunt/TechCrunch 信号，决定集成 Pixelle-Video API 到主平台",
            "signal_ids": signal_ids,
            "decision": "立即集成 Pixelle-Video API，支持脚本到视频的自动化生成",
        },
        version=1,
        status="aligned",
    )
    session.add(charter)
    await session.flush()

    for task_item in PIXELLE_TASK_BLUEPRINT:
        task = Task(
            truth_node_id=charter.id,
            project_id=project_id,
            title=task_item["title"],
            required_skill_tag_ids=[],
            status="todo",
            priority=task_item["priority"],
            estimated_hours=task_item["hours"],
        )
        session.add(task)

    return charter


def build_ai_signal() -> Signal:
    signal = Signal(
        source="ArXiv",
        content="New paper: Multi-Agent LLM Voting System improves accuracy by 23%",
        impact_score=7.5,
        priority="medium",
        processed=True,
    )
    signal.strategic_analysis = json.dumps(
        {
            "decision_proposal": {
                "is_strategic": True,
                "threat_level": "MEDIUM",
                "lead_time_days": 30,
                "impact_score": 7.5,
                "recommendation": "实现多模型投票机制提升 AI 分析准确性",
            },
            "detected_tech_stacks": ["LLM", "Voting", "Multi-Agent"],
        }
    )
    return signal


def pick_signal_ids(signals: Optional[list[Signal]]) -> list[int]:
    return [signal.id for signal in (signals or []) if signal.id is not None]