package handler

import (
	"errors"
	"net/http"

	"galaxy/model/order"
	"galaxy/model/rest"

	"galaxy/game/internal/repo"

	"github.com/gin-gonic/gin"
)

func PutOrderHandler(c *gin.Context, executor CommandExecutor) {
	var cmd rest.Command
	if errorResponse(c, c.ShouldBindJSON(&cmd)) {
		return
	}

	commands := make([]order.DecodableCommand, len(cmd.Commands))
	for i := range cmd.Commands {
		command, err := repo.ParseOrder(cmd.Commands[i], validateCommand)
		if errorResponse(c, err) {
			return
		}
		commands[i] = command
	}
	if len(commands) == 0 {
		errorResponse(c, errors.New("no commands given"))
		return
	}

	result, err := executor.ValidateOrder(cmd.Actor, commands...)
	if errorResponse(c, err) {
		return
	}

	c.JSON(http.StatusAccepted, result)
}

type orderParam struct {
	Player string `form:"player" binding:"required,notblank"`
	Turn   int    `form:"turn" binding:"gte=0"`
}

func GetOrderHandler(c *gin.Context, executor CommandExecutor) {
	p := &orderParam{}
	err := c.ShouldBindQuery(p)
	if errorResponse(c, err) {
		return
	}

	order, ok, err := executor.FetchOrder(p.Player, uint(p.Turn))
	if errorResponse(c, err) {
		return
	}
	if !ok {
		// there was no order previously sent by player
		c.Status(http.StatusNoContent)
	}
	var cmd rest.Command
	if errorResponse(c, c.ShouldBindJSON(&cmd)) {
		return
	}

	c.JSON(http.StatusOK, order)
}