"""Router integrare US-001 — endpoint-uri de integrare externe.

Endpointuri:
  GET /v1/ping                     — readiness check per cont (autentificat sau dev fallback)
  GET /v1/integrare/postman.json   — export colectie Postman v2.1.0

Ruta /v1/ping foloseste `resolve_account_id` (dependinta standard) pentru 401
pe cheie invalida / prod fara cheie. Flag-ul `autentificat_cu_cheie` e derivat
separat citind header-ele brute si verificand cheia real-time (fara sa dubleze
logica de 401 — aceea ramane in `resolve_account_id`).
"""

from __future__ import annotations

from datetime import datetime, timezone

from fastapi import APIRouter, Depends, Header
from fastapi.responses import JSONResponse

from ...auth import _extract_key, account_for_key, resolve_account_id
from ...config import get_settings
from ...db import get_connection
from ...mapping import account_or_default

router = APIRouter(prefix="/v1", tags=["integrare"])


@router.get("/ping")
def ping(
    account_id: int = Depends(resolve_account_id),
    x_api_key: str | None = Header(default=None, alias="X-API-Key"),
    authorization: str | None = Header(default=None),
) -> JSONResponse:
    """Readiness check per cont.

    Intoarce:
      account_id         — contul rezolvat din cheie (sau 1 in dev fara cheie)
      mediu              — "test" / "prod" (settings.rar_env)
      autentificat_cu_cheie — True daca cererea a venit cu o cheie API reala valida
      are_creds_rar      — True daca contul are rar_creds_enc stocat
      ts                 — timestamp ISO UTC al cererii
    """
    settings = get_settings()

    # Detectam daca s-a folosit o cheie reala (nu fallback dev).
    # `resolve_account_id` a garantat deja ca nu e cheie invalida (ar fi dat 401).
    # Acum verificam doar daca exista o cheie extrasa si daca e valida pentru cont.
    cheie_bruta = _extract_key(x_api_key, authorization)
    autentificat_cu_cheie = False
    if cheie_bruta:
        conn = get_connection()
        try:
            acct = account_for_key(conn, cheie_bruta)
        finally:
            conn.close()
        autentificat_cu_cheie = acct is not None

    # Verificam daca contul are creds RAR stocate.
    aid = account_or_default(account_id)
    conn = get_connection()
    try:
        row = conn.execute(
            "SELECT rar_creds_enc FROM accounts WHERE id=?", (aid,)
        ).fetchone()
    finally:
        conn.close()

    are_creds_rar = bool(row and row["rar_creds_enc"])

    return JSONResponse({
        "account_id": aid,
        "mediu": settings.rar_env,
        "autentificat_cu_cheie": autentificat_cu_cheie,
        "are_creds_rar": are_creds_rar,
        "ts": datetime.now(timezone.utc).isoformat(),
    })


# Allowlist hardcodat (NU derivat din app.routes) — cele 3 rute de integrare expuse extern.
_POSTMAN_ITEMS = [
    {
        "name": "Trimite prezentari",
        "request": {
            "method": "POST",
            "header": [
                {"key": "X-API-Key", "value": "{{api_key}}"},
                {"key": "Content-Type", "value": "application/json"},
            ],
            "url": {
                "raw": "{{base_url}}/v1/prezentari",
                "host": ["{{base_url}}"],
                "path": ["v1", "prezentari"],
            },
            "body": {
                "mode": "raw",
                "options": {"raw": {"language": "json"}},
                # rar_credentials e optional: cererea trimite doar cheia API + datele
                # prezentarii; worker-ul foloseste creds-urile RAR salvate pe cont.
                "raw": (
                    '{\n'
                    '  "prezentari": [\n'
                    '    {\n'
                    '      "vin": "WVWZZZ1KZAW000123",\n'
                    '      "nr_inmatriculare": "B999TST",\n'
                    '      "data_prestatie": "2026-06-15",\n'
                    '      "odometru_final": "123456",\n'
                    '      "prestatii": [\n'
                    '        {"cod_prestatie": "OE-1"}\n'
                    '      ]\n'
                    '    }\n'
                    '  ]\n'
                    '}'
                ),
            },
        },
    },
    {
        "name": "Import fisier (xlsx/csv)",
        "request": {
            "method": "POST",
            "header": [
                {"key": "X-API-Key", "value": "{{api_key}}"},
            ],
            "url": {
                "raw": "{{base_url}}/v1/import",
                "host": ["{{base_url}}"],
                "path": ["v1", "import"],
            },
            "body": {
                "mode": "formdata",
                "formdata": [
                    {
                        "key": "file",
                        "type": "file",
                        "description": "Fisier xlsx sau csv cu prezentarile de importat",
                    }
                ],
            },
        },
    },
    {
        "name": "Ping (readiness check)",
        "request": {
            "method": "GET",
            "header": [
                {"key": "X-API-Key", "value": "{{api_key}}"},
            ],
            "url": {
                "raw": "{{base_url}}/v1/ping",
                "host": ["{{base_url}}"],
                "path": ["v1", "ping"],
            },
        },
    },
]


@router.get("/integrare/postman.json")
def postman_export() -> JSONResponse:
    """Export colectie Postman v2.1.0 cu cele 3 rute de integrare.

    Allowlist hardcodat — NU deriva din app.routes pentru a nu expune
    rute interne (ex. /v1/conturi/rar-creds, rutele web etc.).
    """
    colectie = {
        "info": {
            "name": "RAR AUTOPASS Gateway",
            "description": (
                "Colectie de integrare pentru gateway-ul RAR AUTOPASS (Legea 142/2023, OM 210/2024). "
                "Seteaza variabilele `base_url` si `api_key` inainte de utilizare."
            ),
            "schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
        },
        "variable": [
            {"key": "base_url", "value": "http://localhost:8010", "type": "string"},
            {"key": "api_key", "value": "", "type": "string"},
        ],
        "item": _POSTMAN_ITEMS,
    }
    return JSONResponse(content=colectie, media_type="application/json")