package controller

import (
	"database/sql"
	"net/http"
	"strconv"

	"github.com/labstack/echo/v4"

	"epic-ent/internal/domain/dto"
	"epic-ent/internal/domain/vo"
	"epic-ent/internal/service"
)

type HeroController struct {
	svc *service.HeroService
}

func NewHeroController(svc *service.HeroService) *HeroController {
	return &HeroController{svc: svc}
}

func (h *HeroController) Create(c echo.Context) error {
	var req dto.HeroCreateRequest
	if err := c.Bind(&req); err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "invalid request")
	}

	hero, err := h.svc.Create(c.Request().Context(), req)
	if err != nil {
		return err
	}

	return c.JSON(http.StatusCreated, vo.OK(hero))
}

func (h *HeroController) GetByID(c echo.Context) error {
	id, err := parseID(c.Param("id"))
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "invalid id")
	}

	hero, err := h.svc.GetByID(c.Request().Context(), id)
	if err != nil {
		if err == sql.ErrNoRows {
			return echo.NewHTTPError(http.StatusNotFound, "hero not found")
		}
		return err
	}

	return c.JSON(http.StatusOK, vo.OK(hero))
}

func (h *HeroController) Update(c echo.Context) error {
	id, err := parseID(c.Param("id"))
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "invalid id")
	}

	var req dto.HeroUpdateRequest
	if err := c.Bind(&req); err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "invalid request")
	}

	hero, err := h.svc.Update(c.Request().Context(), id, req)
	if err != nil {
		if err == sql.ErrNoRows {
			return echo.NewHTTPError(http.StatusNotFound, "hero not found")
		}
		return err
	}

	return c.JSON(http.StatusOK, vo.OK(hero))
}

func (h *HeroController) Delete(c echo.Context) error {
	id, err := parseID(c.Param("id"))
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, "invalid id")
	}

	if err := h.svc.Delete(c.Request().Context(), id); err != nil {
		if err == sql.ErrNoRows {
			return echo.NewHTTPError(http.StatusNotFound, "hero not found")
		}
		return err
	}

	return c.JSON(http.StatusOK, vo.OK(nil))
}

func parseID(raw string) (int64, error) {
	return strconv.ParseInt(raw, 10, 64)
}