/*
 * Copyright (C) 2026 Fluxer Contributors
 *
 * This file is part of Fluxer.
 *
 * Fluxer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Fluxer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
 */

package integration

import (
	"fmt"
	"net/http"
	"testing"
	"time"
)

// TestGuildRoleDeleteHierarchyEnforcement ensures role deletions respect the hierarchy.
func TestGuildRoleDeleteHierarchyEnforcement(t *testing.T) {
	client := newTestClient(t)
	owner := createTestAccount(t, client)
	moderator := createTestAccount(t, client)

	guild := createGuild(t, client, owner.Token, fmt.Sprintf("Role Delete Hierarchy %d", time.Now().UnixNano()))
	guildID := parseSnowflake(t, guild.ID)
	channelID := parseSnowflake(t, guild.SystemChannel)
	invite := createChannelInvite(t, client, owner.Token, channelID)
	joinGuild(t, client, moderator.Token, invite.Code)

	createRole := func(name string, permissions string) string {
		payload := map[string]any{
			"name":        name,
			"permissions": permissions,
		}
		resp, err := client.postJSONWithAuth(fmt.Sprintf("/guilds/%d/roles", guildID), payload, owner.Token)
		if err != nil {
			t.Fatalf("failed to create role %s: %v", name, err)
		}
		assertStatus(t, resp, http.StatusOK)
		var role struct {
			ID string `json:"id"`
		}
		decodeJSONResponse(t, resp, &role)
		resp.Body.Close()
		return role.ID
	}

	adminRole := createRole("Admin Role", "0")
	modRole := createRole("Moderator Role", "268435456")

	resp, err := client.patchJSONWithAuth(
		fmt.Sprintf("/guilds/%d/roles", guildID),
		[]map[string]any{
			{"id": adminRole, "position": 100},
			{"id": modRole, "position": 50},
		},
		owner.Token,
	)
	if err != nil {
		t.Fatalf("failed to reorder roles: %v", err)
	}
	assertStatus(t, resp, http.StatusNoContent)
	resp.Body.Close()

	resp, err = client.patchJSONWithAuth(
		fmt.Sprintf("/guilds/%d/members/%s", guildID, moderator.UserID),
		map[string]any{"roles": []string{modRole}},
		owner.Token,
	)
	if err != nil {
		t.Fatalf("failed to assign moderator role: %v", err)
	}
	assertStatus(t, resp, http.StatusOK)
	resp.Body.Close()

	resp, err = client.delete(fmt.Sprintf("/guilds/%d/roles/%s", guildID, adminRole), moderator.Token)
	if err != nil {
		t.Fatalf("delete request failed: %v", err)
	}
	assertStatus(t, resp, http.StatusForbidden)
	resp.Body.Close()

	resp, err = client.delete(fmt.Sprintf("/guilds/%d/roles/%s", guildID, adminRole), owner.Token)
	if err != nil {
		t.Fatalf("owner delete request failed: %v", err)
	}
	assertStatus(t, resp, http.StatusNoContent)
	resp.Body.Close()
}