from __future__ import annotations

from dataclasses import asdict
from pathlib import Path

from fastapi import Depends, FastAPI, HTTPException
from pydantic import BaseModel, Field

from repo_registry.core.service import RegistryService
from repo_registry.repo_ingestion.git import GitIngestionService
from repo_registry.storage.sqlite import NotFoundError, RegistryStore


class Settings(BaseModel):
    database_path: str = Field(default="var/repo-registry.sqlite3")
    checkout_root: str = Field(default="var/checkouts")


def get_settings() -> Settings:
    return Settings()


def get_service(settings: Settings = Depends(get_settings)) -> RegistryService:
    database_path = Path(settings.database_path)
    database_path.parent.mkdir(parents=True, exist_ok=True)
    store = RegistryStore(database_path)
    store.initialize()
    return RegistryService(store, ingestion=GitIngestionService(settings.checkout_root))


class RepositoryCreate(BaseModel):
    url: str
    name: str | None = None
    description: str | None = None
    branch: str = "main"


class AbilityCreate(BaseModel):
    name: str
    description: str = ""
    confidence: float = Field(default=1.0, ge=0.0, le=1.0)


class CapabilityCreate(BaseModel):
    ability_id: int
    name: str
    description: str = ""
    inputs: list[str] = Field(default_factory=list)
    outputs: list[str] = Field(default_factory=list)
    confidence: float = Field(default=1.0, ge=0.0, le=1.0)


class FeatureCreate(BaseModel):
    capability_id: int
    name: str
    type: str
    location: str = ""
    confidence: float = Field(default=1.0, ge=0.0, le=1.0)


class EvidenceCreate(BaseModel):
    capability_id: int
    type: str
    reference: str
    strength: str = "medium"


class AnalysisRunCreate(BaseModel):
    source_path: str | None = None


class CandidateGraphApproval(BaseModel):
    notes: str = ""


app = FastAPI(title="Repository Ability Registry", version="0.1.0")


from repo_registry.web_ui.views import router as ui_router

app.include_router(ui_router)


@app.get("/health")
def health() -> dict[str, str]:
    return {"status": "ok"}


@app.post("/repos", status_code=201)
def create_repository(
    payload: RepositoryCreate,
    service: RegistryService = Depends(get_service),
) -> dict[str, object]:
    try:
        repository = service.register_repository(**payload.model_dump())
    except (RuntimeError, ValueError) as exc:
        raise HTTPException(status_code=400, detail=str(exc)) from exc
    return asdict(repository)


@app.get("/repos")
def list_repositories(
    service: RegistryService = Depends(get_service),
) -> list[dict[str, object]]:
    return [asdict(repository) for repository in service.list_repositories()]


@app.get("/repos/{repository_id}")
def get_repository(
    repository_id: int,
    service: RegistryService = Depends(get_service),
) -> dict[str, object]:
    try:
        return asdict(service.get_repository(repository_id))
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc


@app.post("/repos/{repository_id}/analysis-runs", status_code=201)
def create_analysis_run(
    repository_id: int,
    payload: AnalysisRunCreate,
    service: RegistryService = Depends(get_service),
) -> dict[str, object]:
    try:
        summary = service.analyze_repository(
            repository_id,
            source_path=payload.source_path,
        )
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc
    return asdict(summary)


@app.get("/repos/{repository_id}/analysis-runs")
def list_analysis_runs(
    repository_id: int,
    service: RegistryService = Depends(get_service),
) -> list[dict[str, object]]:
    try:
        return [asdict(run) for run in service.list_analysis_runs(repository_id)]
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc


@app.get("/repos/{repository_id}/observed-facts")
def list_observed_facts(
    repository_id: int,
    analysis_run_id: int | None = None,
    service: RegistryService = Depends(get_service),
) -> list[dict[str, object]]:
    try:
        return [
            asdict(fact)
            for fact in service.list_observed_facts(repository_id, analysis_run_id)
        ]
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc


@app.get("/repos/{repository_id}/analysis-runs/{analysis_run_id}/candidate-graph")
def get_candidate_graph(
    repository_id: int,
    analysis_run_id: int,
    service: RegistryService = Depends(get_service),
) -> dict[str, object]:
    try:
        return asdict(service.candidate_graph(repository_id, analysis_run_id))
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc


@app.post("/repos/{repository_id}/analysis-runs/{analysis_run_id}/candidate-graph/approve")
def approve_candidate_graph(
    repository_id: int,
    analysis_run_id: int,
    payload: CandidateGraphApproval,
    service: RegistryService = Depends(get_service),
) -> dict[str, object]:
    try:
        return asdict(
            service.approve_candidate_graph(
                repository_id,
                analysis_run_id,
                notes=payload.notes,
            )
        )
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc


@app.post("/repos/{repository_id}/abilities", status_code=201)
def create_ability(
    repository_id: int,
    payload: AbilityCreate,
    service: RegistryService = Depends(get_service),
) -> dict[str, int]:
    try:
        ability_id = service.add_ability(repository_id, **payload.model_dump())
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc
    return {"id": ability_id}


@app.post("/repos/{repository_id}/capabilities", status_code=201)
def create_capability(
    repository_id: int,
    payload: CapabilityCreate,
    service: RegistryService = Depends(get_service),
) -> dict[str, int]:
    try:
        capability_id = service.add_capability(repository_id, **payload.model_dump())
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc
    return {"id": capability_id}


@app.post("/repos/{repository_id}/features", status_code=201)
def create_feature(
    repository_id: int,
    payload: FeatureCreate,
    service: RegistryService = Depends(get_service),
) -> dict[str, int]:
    try:
        feature_id = service.add_feature(repository_id, **payload.model_dump())
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc
    return {"id": feature_id}


@app.post("/repos/{repository_id}/evidence", status_code=201)
def create_evidence(
    repository_id: int,
    payload: EvidenceCreate,
    service: RegistryService = Depends(get_service),
) -> dict[str, int]:
    try:
        evidence_id = service.add_evidence(repository_id, **payload.model_dump())
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc
    return {"id": evidence_id}


@app.get("/repos/{repository_id}/ability-map")
def get_ability_map(
    repository_id: int,
    service: RegistryService = Depends(get_service),
) -> dict[str, object]:
    try:
        return asdict(service.ability_map(repository_id))
    except NotFoundError as exc:
        raise HTTPException(status_code=404, detail=str(exc)) from exc


@app.get("/search")
def search(
    q: str,
    service: RegistryService = Depends(get_service),
) -> list[dict[str, object]]:
    return [asdict(result) for result in service.search(q)]