package handlers_packages

import (
	"brunel/domain"
	"brunel/packages"
	"sort"
	"strings"

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

type PackagesResponse struct {
	Total    int                    `json:"total"`
	Packages []domain.SourcePackage `json:"packages"`
}

func Packages(c *fiber.Ctx) error {
	pageNum := c.QueryInt("page", 1)
	pageSize := c.QueryInt("pageSize", 250)
	search := strings.ToLower(c.Query("search"))
	filter := c.Query("filter")

	// Adjust pageNum to be 0-based for GetPage
	adjustedPageNum := pageNum - 1
	if adjustedPageNum < 0 {
		adjustedPageNum = 0
	}

	packs := packages.GetPackages()

	finalReturn := make([]domain.SourcePackage, 0)
	packs.ForEach(func(k string, source domain.SourcePackage) bool {
		matchesFilter := filter == ""
		matchesSearch := search == "" || strings.Contains(strings.ToLower(k), search)

		if !matchesFilter && source.Status == domain.PackageStatus(filter) {
			matchesFilter = true
		}
		if !matchesSearch && strings.Contains(strings.ToLower(k), search) {
			matchesSearch = true
		}

		if matchesFilter && matchesSearch {
			finalReturn = append(finalReturn, source)
		}
		return true
	})
	sort.Slice(finalReturn, func(i, j int) bool {
		return finalReturn[i].Name < finalReturn[j].Name
	})

	var result []domain.SourcePackage
	startIndex := adjustedPageNum * pageSize
	endIndex := (adjustedPageNum + 1) * pageSize
	if startIndex >= len(finalReturn) {
		result = []domain.SourcePackage{}
	} else {
		if endIndex > len(finalReturn) {
			endIndex = len(finalReturn)
		}
		result = finalReturn[startIndex:endIndex]
	}

	response := PackagesResponse{
		Total:    len(finalReturn),
		Packages: result,
	}

	return c.Status(fiber.StatusOK).JSON(response)
}