package controller

import (
	"net/http"
	"strconv"
	"strings"

	"github.com/labstack/echo/v4"
)

// @Schemes
// @Summary		get all bills
// @Description	gets all bills as array
// @Tags			bills
// @Produce		json
// @Param			year	query	int	true	"year"
// @Param			month	query	int	true	"month (1-12)"
// @Param			day		query	int	true	"day (1-31)"
// @Success		200		{array}	Bill
// @Router			/bills [get]
func (c *Controller) GetBills(ctx echo.Context) error {
	year := ctx.QueryParam("year")
	month := ctx.QueryParam("month")
	day := ctx.QueryParam("day")
	if year == "" || month == "" || day == "" {
		return echo.NewHTTPError(http.StatusInternalServerError, MissingInformation.String())
	}
	bills, err := c.GetAllBills(year, month, day)
	if err != nil {
		return echo.NewHTTPError(http.StatusInternalServerError, err.Error())
	}
	return ctx.JSON(http.StatusOK, bills)
}

// @Schemes
// @Summary		get all billItems
// @Description	gets all billItems for bill
// @Tags			bills
// @Produce		json
// @Param			bill	query	int	true	"Bill ID"
// @Success		200		{array}	BillItem
// @Router			/bills/items [get]
func (c *Controller) GetBillItems(ctx echo.Context) error {
	bill, err := c.DoesBillExist(ctx.QueryParam("bill"))
	if err != nil {
		return echo.NewHTTPError(http.StatusNotFound, err.Error())
	}
	billItems, err := c.GetAllBillItems(bill.ID)
	if err != nil {
		return echo.NewHTTPError(http.StatusInternalServerError, err.Error())
	}
	return ctx.JSON(http.StatusOK, billItems)
}

// @Schemes
// @Summary		create new bill
// @Description	creates a new bill and returns it
// @Tags			bills
// @Produce		json
// @Param			table	query		int		true	"Table ID"
// @Param			filter	query		string	false	"filter"
// @Success		201		{object}	Bill
// @Failure		404		"Not Found"
// @Failure		500		"Internal Server Error"
// @Router			/bills [post]
func (c *Controller) CreateBill(ctx echo.Context) error {
	table, tableErr := strconv.ParseUint(ctx.QueryParam("table"), 10, 64)
	if tableErr != nil {
		return echo.NewHTTPError(http.StatusBadRequest, MissingInformation.String())
	}
	stringFiler := ctx.QueryParam("filter")
	var filter []string
	if stringFiler != "" {
		filter = strings.Split(stringFiler, ",")
	}
	bill, err := c.createBill(GetOrderOptions{TableId: table, Grouped: true, Filter: filter})
	if err != nil {
		return echo.NewHTTPError(http.StatusInternalServerError, err.Error())
	}
	return ctx.JSON(http.StatusCreated, bill)
}

// @Schemes
// @Summary		delete a bill
// @Description	deletes a bill
// @Tags			bills
// @Produce		json
// @Param			id	path	int	true	"Bill ID"
// @Success		200	"OK"
// @Failure		404	"Not Found"
// @Failure		500	"Internal Server Error"
// @Router			/bills/{id} [delete]
func (c *Controller) DeleteBill(ctx echo.Context) error {
	id := ctx.Param("id")
	bill, err := c.DoesBillExist(id)
	if err != nil {
		return echo.NewHTTPError(http.StatusNotFound, err.Error())
	}
	err = c.deleteBill(&bill)
	if err != nil {
		return echo.NewHTTPError(http.StatusInternalServerError, err.Error())
	}
	return ctx.NoContent(http.StatusOK)
}