package handler

import (
	"github.com/gin-gonic/gin"

	"github.com/kennethcheng/fuellog-api/internal/dto"
	"github.com/kennethcheng/fuellog-api/internal/model"
	"github.com/kennethcheng/fuellog-api/internal/service"
)

// VehicleHandler 车辆路由。
type VehicleHandler struct{ svc service.VehicleService }

func NewVehicleHandler(svc service.VehicleService) *VehicleHandler {
	return &VehicleHandler{svc: svc}
}

// POST /api/vehicles
func (h *VehicleHandler) Create(c *gin.Context) {
	var in dto.VehicleCreate
	if err := bindJSON(c, &in); err != nil {
		writeError(c, err)
		return
	}
	v, err := h.svc.Create(c.Request.Context(), &in)
	if err != nil {
		writeError(c, err)
		return
	}
	sendJSON(c, v)
}

// GET /api/vehicles
func (h *VehicleHandler) List(c *gin.Context) {
	vs, err := h.svc.List(c.Request.Context())
	if err != nil {
		writeError(c, err)
		return
	}
	if vs == nil {
		vs = []model.Vehicle{} // 避免前端收到 null,统一空数组
	}
	sendJSON(c, vs)
}

// GET /api/vehicles/:id
func (h *VehicleHandler) Get(c *gin.Context) {
	id, err := parseUint64(c, "id")
	if err != nil {
		writeError(c, err)
		return
	}
	v, err := h.svc.Get(c.Request.Context(), id)
	if err != nil {
		writeError(c, err)
		return
	}
	sendJSON(c, v)
}

// PUT /api/vehicles/:id
func (h *VehicleHandler) Update(c *gin.Context) {
	id, err := parseUint64(c, "id")
	if err != nil {
		writeError(c, err)
		return
	}
	var in dto.VehicleUpdate
	if err := bindJSON(c, &in); err != nil {
		writeError(c, err)
		return
	}
	v, err := h.svc.Update(c.Request.Context(), id, &in)
	if err != nil {
		writeError(c, err)
		return
	}
	sendJSON(c, v)
}

// DELETE /api/vehicles/:id
func (h *VehicleHandler) Delete(c *gin.Context) {
	id, err := parseUint64(c, "id")
	if err != nil {
		writeError(c, err)
		return
	}
	if err := h.svc.Delete(c.Request.Context(), id); err != nil {
		writeError(c, err)
		return
	}
	c.Status(204)
}

// POST /api/vehicles/:id/default
func (h *VehicleHandler) SetDefault(c *gin.Context) {
	id, err := parseUint64(c, "id")
	if err != nil {
		writeError(c, err)
		return
	}
	v, err := h.svc.SetDefault(c.Request.Context(), id)
	if err != nil {
		writeError(c, err)
		return
	}
	sendJSON(c, v)
}