"""Projects management and state CRUD router."""

from __future__ import annotations

from fastapi import APIRouter, HTTPException
from pydantic import BaseModel, Field

from agentic_core.agents import known_info_snapshot
from agentic_core.schemas import ProjectContext
from ..deps import services

router = APIRouter(prefix="/api/projects", tags=["Projects"])


class CreateProjectRequest(BaseModel):
    business_idea: str = Field(min_length=1)


def load_project(project_id: str) -> ProjectContext:
    context = services.project_store.load(project_id)
    if context is None:
        raise HTTPException(status_code=404, detail=f"Project {project_id!r} not found")
    return context


def save_project(context: ProjectContext) -> None:
    services.project_store.save(context)


def project_response(context: ProjectContext, discovery: dict | None = None) -> dict:
    return {
        "project_id": context.project_id,
        "status": context.status,
        "business_idea": context.business_idea,
        "summary": project_summary(context),
        "known_information": known_info_snapshot(context),
        "transcript": [turn.model_dump() for turn in context.transcript],
        "discovery": discovery,
    }


def project_summary(context: ProjectContext) -> dict:
    return {
        "problem": context.problem,
        "target_users": context.target_users,
        "user_roles": context.user_roles,
        "business_goals": context.business_goals,
        "core_features": context.core_features,
        "constraints": context.constraints,
        "integrations": context.integrations,
        "technology_preferences": context.technology_preferences,
    }


@router.get("")
async def list_projects():
    """List all project IDs stored in the system."""
    return {"projects": services.project_store.list_ids()}


@router.post("", status_code=201)
async def create_project(request: CreateProjectRequest):
    """Create a project and run the first discovery turn."""
    context = services.project_store.create(request.business_idea)
    output = await services.orchestrator.discovery_turn(context, request.business_idea)
    save_project(context)
    return project_response(context, output.model_dump())


@router.get("/{project_id}")
async def get_project(project_id: str):
    """Fetch full project state, context, and summary."""
    context = load_project(project_id)
    return project_response(context)


@router.delete("/{project_id}")
async def delete_project(project_id: str):
    """Delete a project state from persistent SQLite store."""
    deleted = services.project_store.delete(project_id)
    if not deleted:
        raise HTTPException(status_code=404, detail=f"Project {project_id!r} not found")
    return {"status": "deleted", "project_id": project_id}


@router.get("/{project_id}/runs")
async def get_project_runs(project_id: str):
    """Fetch per-agent execution logs and telemetry records for a project."""
    load_project(project_id)
    records = services.tracker.list(project_id)
    return {"project_id": project_id, "runs": [r.model_dump() for r in records]}