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from dotenv import load_dotenv

load_dotenv()

import os
from fastapi import FastAPI, Depends, Request
from fastapi.middleware.cors import CORSMiddleware
from fastapi.openapi.utils import get_openapi

from .oracle_client import init_oracle_client_once
from .auth import router as auth_router
from .queries import router as vendas_router
from .dashboard import router as dashboard_router
from .unidades import router as unidades_router
from .tenant_oracle_db import get_tenant_context

init_oracle_client_once()

app = FastAPI(
    title="DashMobile GrupoBiG",
    version="1.0.0",
)


def custom_openapi():
    if app.openapi_schema:
        return app.openapi_schema

    schema = get_openapi(
        title=app.title,
        version=app.version,
        routes=app.routes,
        description=(
            "API do DashMobile.\n\n"
            "✅ Para testar no Swagger:\n"
            "1) Clique em Authorize e informe X-Empresa\n"
            "2) Faça login em /auth/login e copie o token\n"
            "3) Clique em Authorize e informe o token em HTTPBearer (Bearer)\n"
        ),
    )

    components = schema.setdefault("components", {})
    security_schemes = components.setdefault("securitySchemes", {})

    security_schemes["EmpresaHeader"] = {
        "type": "apiKey",
        "in": "header",
        "name": "X-Empresa",
        "description": "Código da empresa/tenant. Ex: av7",
    }

    schema["security"] = [{"EmpresaHeader": []}]

    for _, methods in schema.get("paths", {}).items():
        for _, operation in methods.items():
            if not isinstance(operation, dict):
                continue
            op_sec = operation.get("security")
            if not op_sec:
                continue
            has_empresa = any(isinstance(sec, dict) and "EmpresaHeader" in sec for sec in op_sec)
            if not has_empresa:
                op_sec.insert(0, {"EmpresaHeader": []})
                operation["security"] = op_sec

    app.openapi_schema = schema
    return app.openapi_schema


app.openapi = custom_openapi


def _parse_bool(value: str) -> bool:
    v = (value or "").strip().lower()
    return v in ("1", "true", "yes", "y", "on")


# -----------------------------------------------------------------------------
# CORS configurável por ambiente (DEV pode liberar tudo)
# -----------------------------------------------------------------------------
cors_allow_all = _parse_bool(os.getenv("CORS_ALLOW_ALL", "false"))
cors_origins_env = (os.getenv("CORS_ORIGINS") or "").strip()

default_origins = [
    "http://localhost:5010",
    "http://127.0.0.1:5010",
    "http://localhost",
    "http://127.0.0.1",
]

if cors_allow_all:
    allow_origins = ["*"]
else:
    if cors_origins_env:
        allow_origins = [o.strip() for o in cors_origins_env.split(",") if o.strip()]
    else:
        allow_origins = default_origins

app.add_middleware(
    CORSMiddleware,
    allow_origins=allow_origins,
    allow_credentials=False,
    allow_methods=["*"],
    allow_headers=["*"],
)


@app.middleware("http")
async def private_network_access_middleware(request: Request, call_next):
    response = await call_next(request)
    if request.headers.get("access-control-request-private-network") == "true":
        response.headers["Access-Control-Allow-Private-Network"] = "true"
    return response


@app.get("/health")
def health_check():
    return {"status": "ok"}


@app.get("/")
def read_root():
    return {"message": "API do DashMobile está rodando."}


app.include_router(auth_router)
app.include_router(vendas_router)
app.include_router(dashboard_router)
app.include_router(unidades_router)


@app.get("/_debug/oracle")
def debug_oracle(ctx=Depends(get_tenant_context)):
    return {
        "empresa": ctx.empresa,
        "unidades": ctx.unidades,
        "oracle_ok": True,
        "dsn": ctx.oracle_dsn,
    }