/*
 * Copyright 2026 Oleg Borodin <onborodin@gmail.com>
 *
 * This work is published and licensed under a Creative Commons
 * Attribution-NonCommercial-NoDerivatives 4.0 International License.
 *
 * Distribution of this work is permitted, but commercial use and
 * modifications are strictly prohibited.
 */
package imageoper

import (
	"context"
	"net/http"
	"slices"
)

type ListManifestsParams struct {
	N int64
}
type ListManifestsResult struct {
	Repositories []string `json:"repositories"`
}

func (oper *Operator) ListManifests(ctx context.Context, params *ListManifestsParams) (*ListManifestsResult, int, error) {
	var err error
	res := &ListManifestsResult{
		Repositories: make([]string, 0),
	}
	refMap := make(map[string]bool)
	descrs, err := oper.mdb.ListAllManifests(ctx)
	if err != nil {
		return res, http.StatusInternalServerError, err
	}
	for _, descr := range descrs {
		_, already := refMap[descr.Name]
		if !already {
			refMap[descr.Name] = true
		}
	}
	for key, _ := range refMap {
		res.Repositories = append(res.Repositories, key)
	}
	slices.Sort(res.Repositories)
	return res, http.StatusOK, err
}