package client

import (
	"errors"

	"github.com/gofiber/fiber/v2"
	"github.com/jackc/pgx/v5"
	"github.com/techxcar/backend/internal/auth"
	"github.com/techxcar/backend/pkg/database"
)

func RegisterRoutes(app *fiber.App, db *database.DB, secret string) {
	rw := []fiber.Handler{
		auth.RequireAuth(secret),
		auth.RequireRole("tenant_admin", "manager", "technician"),
		auth.TenantMiddleware(db),
	}
	write := []fiber.Handler{
		auth.RequireAuth(secret),
		auth.RequireRole("tenant_admin", "manager"),
		auth.TenantMiddleware(db),
	}

	app.Get("/api/v1/clients", append(rw, listClientsH())...)
	app.Post("/api/v1/clients", append(write, createClientH())...)
	app.Get("/api/v1/clients/:id", append(rw, getClientH())...)
	app.Put("/api/v1/clients/:id", append(write, updateClientH())...)
	app.Delete("/api/v1/clients/:id", append(write, deleteClientH())...)

	app.Get("/api/v1/clients/:id/vehicles", append(rw, listVehiclesH())...)
	app.Post("/api/v1/clients/:id/vehicles", append(write, createVehicleH())...)
	app.Put("/api/v1/vehicles/:id", append(write, updateVehicleH())...)
}

func listClientsH() fiber.Handler {
	return func(c *fiber.Ctx) error {
		conn := auth.GetConn(c)
		list, err := ListClients(c.Context(), conn)
		if err != nil {
			return fiber.NewError(500, "erro ao listar clientes")
		}
		if list == nil {
			list = []*Client{}
		}
		return c.JSON(fiber.Map{"data": list, "error": nil})
	}
}

func getClientH() fiber.Handler {
	return func(c *fiber.Ctx) error {
		conn := auth.GetConn(c)
		cl, err := GetClient(c.Context(), conn, c.Params("id"))
		if err != nil {
			if errors.Is(err, pgx.ErrNoRows) {
				return fiber.NewError(404, "cliente não encontrado")
			}
			return fiber.NewError(500, "erro ao obter cliente")
		}
		return c.JSON(fiber.Map{"data": cl, "error": nil})
	}
}

type clientBody struct {
	Name    string `json:"name"`
	NIF     string `json:"nif"`
	Phone   string `json:"phone"`
	Email   string `json:"email"`
	Address string `json:"address"`
	Notes   string `json:"notes"`
}

func createClientH() fiber.Handler {
	return func(c *fiber.Ctx) error {
		var b clientBody
		if err := c.BodyParser(&b); err != nil {
			return fiber.NewError(400, "corpo inválido")
		}
		if b.Name == "" {
			return fiber.NewError(400, "nome é obrigatório")
		}
		conn := auth.GetConn(c)
		cl, err := CreateClient(c.Context(), conn, b.Name, b.NIF, b.Phone, b.Email, b.Address, b.Notes)
		if err != nil {
			return fiber.NewError(500, "erro ao criar cliente")
		}
		return c.Status(201).JSON(fiber.Map{"data": cl, "error": nil})
	}
}

func updateClientH() fiber.Handler {
	return func(c *fiber.Ctx) error {
		var b clientBody
		if err := c.BodyParser(&b); err != nil {
			return fiber.NewError(400, "corpo inválido")
		}
		if b.Name == "" {
			return fiber.NewError(400, "nome é obrigatório")
		}
		conn := auth.GetConn(c)
		cl, err := UpdateClient(c.Context(), conn, c.Params("id"), b.Name, b.NIF, b.Phone, b.Email, b.Address, b.Notes)
		if err != nil {
			if errors.Is(err, pgx.ErrNoRows) {
				return fiber.NewError(404, "cliente não encontrado")
			}
			return fiber.NewError(500, "erro ao actualizar cliente")
		}
		return c.JSON(fiber.Map{"data": cl, "error": nil})
	}
}

func deleteClientH() fiber.Handler {
	return func(c *fiber.Ctx) error {
		conn := auth.GetConn(c)
		if err := DeleteClient(c.Context(), conn, c.Params("id")); err != nil {
			return fiber.NewError(500, "erro ao eliminar cliente")
		}
		return c.SendStatus(204)
	}
}

func listVehiclesH() fiber.Handler {
	return func(c *fiber.Ctx) error {
		conn := auth.GetConn(c)
		list, err := ListVehiclesByClient(c.Context(), conn, c.Params("id"))
		if err != nil {
			return fiber.NewError(500, "erro ao listar veículos")
		}
		if list == nil {
			list = []*Vehicle{}
		}
		return c.JSON(fiber.Map{"data": list, "error": nil})
	}
}

type vehicleBody struct {
	Plate    string `json:"plate"`
	Brand    string `json:"brand"`
	Model    string `json:"model"`
	Year     int    `json:"year"`
	VIN      string `json:"vin"`
	FuelType string `json:"fuel_type"`
	Mileage  int    `json:"mileage"`
	Notes    string `json:"notes"`
}

func createVehicleH() fiber.Handler {
	return func(c *fiber.Ctx) error {
		var b vehicleBody
		if err := c.BodyParser(&b); err != nil {
			return fiber.NewError(400, "corpo inválido")
		}
		if b.Plate == "" {
			return fiber.NewError(400, "matrícula é obrigatória")
		}
		conn := auth.GetConn(c)
		v, err := CreateVehicle(c.Context(), conn, c.Params("id"), b.Plate, b.Brand, b.Model, b.Year, b.VIN, b.FuelType, b.Notes, b.Mileage)
		if err != nil {
			return fiber.NewError(500, "erro ao criar veículo")
		}
		return c.Status(201).JSON(fiber.Map{"data": v, "error": nil})
	}
}

func updateVehicleH() fiber.Handler {
	return func(c *fiber.Ctx) error {
		var b vehicleBody
		if err := c.BodyParser(&b); err != nil {
			return fiber.NewError(400, "corpo inválido")
		}
		if b.Plate == "" {
			return fiber.NewError(400, "matrícula é obrigatória")
		}
		conn := auth.GetConn(c)
		v, err := UpdateVehicle(c.Context(), conn, c.Params("id"), b.Plate, b.Brand, b.Model, b.Year, b.VIN, b.FuelType, b.Notes, b.Mileage)
		if err != nil {
			if errors.Is(err, pgx.ErrNoRows) {
				return fiber.NewError(404, "veículo não encontrado")
			}
			return fiber.NewError(500, "erro ao actualizar veículo")
		}
		return c.JSON(fiber.Map{"data": v, "error": nil})
	}
}