package tests

import (
	"sync"
	"testing"
)

// TestConcurrentOrgCreation 测试并发创建组织
func TestConcurrentOrgCreation(t *testing.T) {
	ensureUsers(t)

	var wg sync.WaitGroup
	errors := make(chan error, 10)

	// 并发创建多个组织
	for i := 0; i < 10; i++ {
		wg.Add(1)
		go func(index int) {
			defer wg.Done()

			resp := doRequest(t, "POST", "/api/orgs", map[string]string{
				"code": "concurrent_org_" + string(rune('a'+index)),
				"name": "Concurrent Org " + string(rune('A'+index)),
			}, User1Token)

			if resp.Code != 200 && resp.Code != 400 {
				// 400 可能是重复创建，其他错误码需要记录
				errors <- nil
			}
		}(i)
	}

	wg.Wait()
	close(errors)

	// 检查是否有错误
	errorCount := 0
	for range errors {
		errorCount++
	}

	if errorCount > 0 {
		t.Errorf("Got %d errors during concurrent org creation", errorCount)
	}
}

// TestConcurrentMemberAddition 测试并发添加成员
func TestConcurrentMemberAddition(t *testing.T) {
	ensureUsers(t)

	var orgID string

	// User1 创建组织
	resp := doRequest(t, "POST", "/api/orgs", map[string]string{
		"code": "concurrent_member_test",
		"name": "Concurrent Member Test",
	}, User1Token)

	if resp.Code == 200 {
		var data struct {
			ID string `json:"id"`
		}
		decodeResponse(t, resp, &data)
		orgID = data.ID
	}

	if orgID == "" {
		t.Skip("Failed to create org")
	}

	// 先添加 User2 为成员
	resp = doRequest(t, "POST", "/api/orgs/"+orgID+"/members", map[string]string{
		"user_id": User2ID,
		"role":    "member",
	}, User1Token)

	if resp.Code != 200 {
		t.Skip("Failed to add initial member")
	}

	// 并发获取组织详情
	var wg sync.WaitGroup
	for i := 0; i < 5; i++ {
		wg.Add(1)
		go func() {
			defer wg.Done()
			resp := doRequest(t, "GET", "/api/orgs/"+orgID, nil, User2Token)
			if resp.Code != 200 {
				t.Errorf("Concurrent access failed with code: %d", resp.Code)
			}
		}()
	}

	wg.Wait()

	// 清理
	doRequest(t, "DELETE", "/api/orgs/"+orgID, nil, User1Token)
}

// TestConcurrentRoleUpdate 测试并发角色更新
func TestConcurrentRoleUpdate(t *testing.T) {
	ensureUsers(t)

	// 创建测试角色
	resp := doRequest(t, "POST", "/api/roles", map[string]string{
		"code":        "concurrent_role",
		"name":        "Concurrent Role",
		"description": "Role for concurrent test",
	}, AdminToken)

	if resp.Code != 200 {
		t.Skip("Failed to create role")
	}

	var data struct {
		ID string `json:"id"`
	}
	decodeResponse(t, resp, &data)
	roleID := data.ID

	// 并发更新角色权限
	var wg sync.WaitGroup
	for i := 0; i < 5; i++ {
		wg.Add(1)
		go func(index int) {
			defer wg.Done()

			var perms []string
			if index%2 == 0 {
				perms = []string{"vb:org:read"}
			} else {
				perms = []string{"vb:org:create"}
			}

			resp := doRequest(t, "PUT", "/api/roles/"+roleID+"/permissions", map[string]any{
				"permission_ids": perms,
			}, AdminToken)

			if resp.Code != 200 {
				t.Errorf("Concurrent role update failed with code: %d", resp.Code)
			}
		}(i)
	}

	wg.Wait()

	// 清理
	doRequest(t, "DELETE", "/api/roles/"+roleID, nil, AdminToken)
}

// TestConcurrentUserUpdate 测试并发用户更新
func TestConcurrentUserUpdate(t *testing.T) {
	ensureUsers(t)

	var wg sync.WaitGroup

	// User1 并发更新自己的信息
	for i := 0; i < 5; i++ {
		wg.Add(1)
		go func(index int) {
			defer wg.Done()

			resp := doRequest(t, "PATCH", "/api/auth/me", map[string]string{
				"nickname": "Concurrent Update " + string(rune('A'+index)),
			}, User1Token)

			if resp.Code != 200 {
				t.Errorf("Concurrent user update failed with code: %d", resp.Code)
			}
		}(i)
	}

	wg.Wait()
}

// TestConcurrentTokenRefresh 测试并发 Token 刷新
func TestConcurrentTokenRefresh(t *testing.T) {
	ensureUsers(t)

	// 先获取 refresh token
	resp := doRequest(t, "POST", "/api/auth/login", map[string]string{
		"username": "user1_test",
		"password": "password123",
	}, "")

	if resp.Code != 200 {
		t.Skip("Failed to login")
	}

	var data struct {
		RefreshToken string `json:"refresh_token"`
	}
	decodeResponse(t, resp, &data)

	if data.RefreshToken == "" {
		t.Skip("No refresh token available")
	}

	// 并发刷新 token
	var wg sync.WaitGroup
	tokens := make(chan string, 5)

	for i := 0; i < 5; i++ {
		wg.Add(1)
		go func() {
			defer wg.Done()

			resp := doRequest(t, "POST", "/api/auth/refresh", map[string]string{
				"refresh_token": data.RefreshToken,
			}, "")

			if resp.Code == 200 {
				var refreshData struct {
					AccessToken string `json:"access_token"`
				}
				decodeResponse(t, resp, &refreshData)
				if refreshData.AccessToken != "" {
					tokens <- refreshData.AccessToken
				}
			}
		}()
	}

	wg.Wait()
	close(tokens)

	// 验证至少有一个成功
	tokenCount := 0
	for range tokens {
		tokenCount++
	}

	if tokenCount == 0 {
		t.Errorf("All concurrent token refreshes failed")
	}
}

// TestConcurrentPermissionCheck 测试并发权限检查
func TestConcurrentPermissionCheck(t *testing.T) {
	ensureUsers(t)

	var wg sync.WaitGroup

	// 多个用户并发检查权限
	for i := 0; i < 5; i++ {
		wg.Add(1)
		go func(index int) {
			defer wg.Done()

			var token string
			switch index % 3 {
			case 0:
				token = AdminToken
			case 1:
				token = User1Token
			case 2:
				token = User2Token
			}

			resp := doRequest(t, "GET", "/api/orgs", nil, token)
			// 所有用户都应该能访问 org 列表
			if resp.Code != 200 {
				t.Errorf("Permission check failed with code: %d", resp.Code)
			}
		}(i)
	}

	wg.Wait()
}

// TestConcurrentOAuthClientOps 测试并发 OAuth 客户端操作
func TestConcurrentOAuthClientOps(t *testing.T) {
	ensureUsers(t)

	// 创建测试客户端
	resp := doRequest(t, "POST", "/api/oauth/clients", map[string]any{
		"name":           "Concurrent Test Client",
		"redirect_uris":  []string{"https://example.com/callback"},
		"allowed_scopes": "openid",
	}, AdminToken)

	if resp.Code != 200 {
		t.Skip("Failed to create OAuth client")
	}

	var data struct {
		ClientID string `json:"client_id"`
	}
	decodeResponse(t, resp, &data)
	clientID := data.ClientID

	var wg sync.WaitGroup

	// 并发更新客户端
	for i := 0; i < 5; i++ {
		wg.Add(1)
		go func(index int) {
			defer wg.Done()

			resp := doRequest(t, "PATCH", "/api/oauth/clients/"+clientID, map[string]string{
				"name": "Updated Name " + string(rune('A'+index)),
			}, AdminToken)

			if resp.Code != 200 {
				t.Errorf("Concurrent OAuth client update failed with code: %d", resp.Code)
			}
		}(i)
	}

	wg.Wait()

	// 清理
	doRequest(t, "DELETE", "/api/oauth/clients/"+clientID, nil, AdminToken)
}