from fastapi import APIRouter, Request, Depends
from fastapi.responses import JSONResponse
from app.database import get_connection
from app.auth import get_current_user
from app.services.firebird_service import get_firebird_from_config

router = APIRouter(prefix="/debug-fb", tags=["debug"])


def _cfg():
    conn = get_connection()
    c = {r["key"]: r["value"] for r in conn.execute("SELECT * FROM config").fetchall()}
    conn.close()
    return c


@router.get("/cups")
async def find_cups(request: Request, user: dict = Depends(get_current_user)):
    cfg = _cfg()
    fb, ok, msg = get_firebird_from_config(cfg)
    if not ok:
        return JSONResponse({"error": msg})

    results = {}

    # 1. Tablas/campos que contengan "CUP" en el nombre
    ok1, _, rows1 = fb.execute_query("""
        SELECT DISTINCT TRIM(f.RDB$RELATION_NAME) AS tabla, TRIM(f.RDB$FIELD_NAME) AS campo
        FROM RDB$RELATION_FIELDS f
        WHERE f.RDB$FIELD_NAME CONTAINING 'CUP'
        ORDER BY 1, 2
    """)
    results["campos_cup"] = rows1 if ok1 else []

    # 2. Columnas de la tabla ARTICULO
    ok2, _, rows2 = fb.execute_query("""
        SELECT TRIM(f.RDB$FIELD_NAME) AS campo
        FROM RDB$RELATION_FIELDS f
        WHERE f.RDB$RELATION_NAME = 'ARTICULO'
        ORDER BY f.RDB$FIELD_POSITION
    """)
    results["columnas_articulo"] = [r["campo"] for r in rows2] if ok2 else "no existe"

    # 3. Columnas de la tabla EXAMEN (si existe)
    ok3, _, rows3 = fb.execute_query("""
        SELECT TRIM(f.RDB$FIELD_NAME) AS campo
        FROM RDB$RELATION_FIELDS f
        WHERE f.RDB$RELATION_NAME = 'EXAMEN'
        ORDER BY f.RDB$FIELD_POSITION
    """)
    results["columnas_examen"] = [r["campo"] for r in rows3] if ok3 else "no existe"

    # 4. Muestra de ARTICULO con el primer examen de RELACION
    ok4, _, rows4 = fb.execute_query("""
        SELECT FIRST 1 rel.COD_EXAMEN FROM RELACION rel WHERE rel.COD_EXAMEN IS NOT NULL
    """)
    if ok4 and rows4:
        cod = rows4[0]["COD_EXAMEN"]
        ok5, _, rows5 = fb.execute_query(
            "SELECT FIRST 1 a.* FROM ARTICULO a WHERE a.CODIGO = :cod",
            {"cod": cod}
        )
        results["muestra_articulo"] = rows5[0] if (ok5 and rows5) else "sin datos"
        results["cod_examen_muestra"] = cod

    # 5. Verificar si hay descuentos en RELACION
    ok6, _, rows6 = fb.execute_query("""
        SELECT FIRST 10
            r.NUM_FACTURA, r.PREFIJO, rel.COD_EXAMEN, rel.DESCUENTO, rel.PRECIO
        FROM RELACION rel
        JOIN RECEPCION r ON r.IDRECEPCION = rel.IDRECEPCION
        WHERE rel.DESCUENTO IS NOT NULL AND rel.DESCUENTO > 0
        ORDER BY r.FECHA_RECEPCION DESC
    """)
    results["servicios_con_descuento"] = rows6 if ok6 else []

    fb.disconnect()
    return JSONResponse(results)