package controller

import (
	"encoding/json"
	"fmt"
	"math"
	"strconv"
	"strings"

	"gitlab.com/mbugroup/lti-api.git/internal/modules/production/project_flocks/dto"
	service "gitlab.com/mbugroup/lti-api.git/internal/modules/production/project_flocks/services"
	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/production/project_flocks/validations"
	"gitlab.com/mbugroup/lti-api.git/internal/response"

	"github.com/gofiber/fiber/v2"
)

type ProjectflockController struct {
	ProjectflockService service.ProjectflockService
}

func NewProjectflockController(projectflockService service.ProjectflockService) *ProjectflockController {
	return &ProjectflockController{
		ProjectflockService: projectflockService,
	}
}

func (u *ProjectflockController) GetAll(c *fiber.Ctx) error {
	parseUintList := func(raw string) ([]uint, error) {
		raw = strings.TrimSpace(raw)
		if raw == "" {
			return nil, nil
		}

		var ids []uint
		if strings.HasPrefix(raw, "[") {
			if err := json.Unmarshal([]byte(raw), &ids); err == nil {
				return ids, nil
			}
		}

		parts := strings.Split(raw, ",")
		for _, part := range parts {
			part = strings.Trim(part, " \"[]")
			if part == "" {
				continue
			}
			v, err := strconv.Atoi(part)
			if err != nil || v <= 0 {
				return nil, fmt.Errorf("invalid kandang id: %s", part)
			}
			ids = append(ids, uint(v))
		}
		return ids, nil
	}

	query := &validation.Query{
		Page:      c.QueryInt("page", 1),
		Limit:     c.QueryInt("limit", 10),
		Search:    c.Query("search", ""),
		SortBy:    c.Query("sort_by", ""),
		SortOrder: c.Query("sort_order", ""),
	}

	if area := c.QueryInt("area_id", 0); area > 0 {
		query.AreaId = uint(area)
	}
	if location := c.QueryInt("location_id", 0); location > 0 {
		query.LocationId = uint(location)
	}
	if period := c.QueryInt("period", 0); period > 0 {
		query.Period = period
	}

	if kandangRaw := c.Query("kandang_id", c.Query("kandang_ids", "")); kandangRaw != "" {
		ids, err := parseUintList(kandangRaw)
		if err != nil {
			return fiber.NewError(fiber.StatusBadRequest, err.Error())
		}
		query.KandangIds = ids
	}

	result, totalResults, err := u.ProjectflockService.GetAll(c, query)
	if err != nil {
		return err
	}

	return c.Status(fiber.StatusOK).
		JSON(response.SuccessWithPaginate[dto.ProjectFlockListDTO]{
			Code:    fiber.StatusOK,
			Status:  "success",
			Message: "Get all projectflocks successfully",
			Meta: response.Meta{
				Page:         query.Page,
				Limit:        query.Limit,
				TotalPages:   int64(math.Ceil(float64(totalResults) / float64(query.Limit))),
				TotalResults: totalResults,
			},
			Data: dto.ToProjectFlockListDTOs(result),
		})
}

func (u *ProjectflockController) GetOne(c *fiber.Ctx) error {
	param := c.Params("id")

	id, err := strconv.Atoi(param)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "Invalid Id")
	}

	result, err := u.ProjectflockService.GetOne(c, uint(id))
	if err != nil {
		return err
	}

	return c.Status(fiber.StatusOK).
		JSON(response.Success{
			Code:    fiber.StatusOK,
			Status:  "success",
			Message: "Get projectflock successfully",
			Data:    dto.ToProjectFlockListDTO(*result),
		})
}

func (u *ProjectflockController) CreateOne(c *fiber.Ctx) error {
	req := new(validation.Create)

	if err := c.BodyParser(req); err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
	}

	result, err := u.ProjectflockService.CreateOne(c, req)
	if err != nil {
		return err
	}

	return c.Status(fiber.StatusCreated).
		JSON(response.Success{
			Code:    fiber.StatusCreated,
			Status:  "success",
			Message: "Create projectflock successfully",
			Data:    dto.ToProjectFlockListDTO(*result),
		})
}

func (u *ProjectflockController) UpdateOne(c *fiber.Ctx) error {
	req := new(validation.Update)
	param := c.Params("id")

	id, err := strconv.Atoi(param)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "Invalid Id")
	}

	if err := c.BodyParser(req); err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
	}

	result, err := u.ProjectflockService.UpdateOne(c, req, uint(id))
	if err != nil {
		return err
	}

	return c.Status(fiber.StatusOK).
		JSON(response.Success{
			Code:    fiber.StatusOK,
			Status:  "success",
			Message: "Update projectflock successfully",
			Data:    dto.ToProjectFlockListDTO(*result),
		})
}

func (u *ProjectflockController) DeleteOne(c *fiber.Ctx) error {
	param := c.Params("id")

	id, err := strconv.Atoi(param)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "Invalid Id")
	}

	if err := u.ProjectflockService.DeleteOne(c, uint(id)); err != nil {
		return err
	}

	return c.Status(fiber.StatusOK).
		JSON(response.Common{
			Code:    fiber.StatusOK,
			Status:  "success",
			Message: "Delete projectflock successfully",
		})
}

func (u *ProjectflockController) Approval(c *fiber.Ctx) error {
	param := c.Params("id")

	id, err := strconv.Atoi(param)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "Invalid Id")
	}

	req := new(validation.Approve)
	if err := c.BodyParser(req); err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
	}

	result, err := u.ProjectflockService.Approval(c, uint(id), req)
	if err != nil {
		return err
	}

	return c.Status(fiber.StatusOK).
		JSON(response.Success{
			Code:    fiber.StatusOK,
			Status:  "success",
			Message: "Submit projectflock approval successfully",
			Data:    dto.ToProjectFlockListDTO(*result),
		})
}

func (u *ProjectflockController) GetFlockPeriodSummary(c *fiber.Ctx) error {
	param := c.Params("flock_id")

	id, err := strconv.Atoi(param)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "Invalid Flock Id")
	}

	summary, err := u.ProjectflockService.GetFlockPeriodSummary(c, uint(id))
	if err != nil {
		return err
	}

	responseBody := dto.ToFlockPeriodSummaryDTO(summary.Flock, summary.NextPeriod)

	return c.Status(fiber.StatusOK).
		JSON(response.Success{
			Code:    fiber.StatusOK,
			Status:  "success",
			Message: "Get flock period summary successfully",
			Data:    responseBody,
		})
}