package apis

import (
	"bytes"
	"clortho/lib/db"
	"clortho/lib/users"
	"encoding/json"
	"fmt"
	"github.com/gin-gonic/gin"
	"github.com/stretchr/testify/assert"
	"net/http"
	"net/http/httptest"
	"testing"
)

func setupUsersRouter() *gin.Engine {
	r := gin.Default()
	private := r.Group("/gui")
	InitUsersEndpoints(private)
	return r
}

func createTestUserForEndpoint(admin bool) *db.User {
	username := fmt.Sprintf("testuser_%d", db.Connection.RowsAffected)
	if admin {
		username = fmt.Sprintf("admin_%d", db.Connection.RowsAffected)
	}
	displayName := username
	user := db.User{
		Username:    username,
		DisplayName: &displayName,
		Admin:       admin,
	}
	db.Connection.Create(&user)
	return &user
}

func TestGetUsers(t *testing.T) {
	// Setup
	router := setupUsersRouter()

	// Create admin user and session
	adminUser := createTestUserForEndpoint(true)
	adminSession := users.NewSession(*adminUser)

	// Set admin session in context
	router.Use(func(c *gin.Context) {
		c.Set("session", adminSession)
		c.Next()
	})

	// Test getting all users
	w := httptest.NewRecorder()
	req, _ := http.NewRequest("GET", "/gui/users/", nil)
	req.Header.Set("Content-Type", "application/json")
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusOK, w.Code)

	var userList []db.User
	err := json.Unmarshal(w.Body.Bytes(), &userList)
	assert.NoError(t, err)
	assert.NotEmpty(t, userList)
}

func TestGetUser(t *testing.T) {
	// Setup
	router := setupUsersRouter()

	// Create admin user and session
	adminUser := createTestUserForEndpoint(true)
	adminSession := users.NewSession(*adminUser)

	// Set admin session in context
	router.Use(func(c *gin.Context) {
		c.Set("session", adminSession)
		c.Next()
	})

	// Test getting a specific user
	w := httptest.NewRecorder()
	req, _ := http.NewRequest("GET", fmt.Sprintf("/gui/users/%d", adminUser.ID), nil)
	req.Header.Set("Content-Type", "application/json")
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusOK, w.Code)

	var user db.User
	err := json.Unmarshal(w.Body.Bytes(), &user)
	assert.NoError(t, err)
	assert.Equal(t, adminUser.ID, user.ID)
	assert.Equal(t, adminUser.Username, user.Username)
}

func TestCreateUser(t *testing.T) {
	// Setup
	router := setupUsersRouter()

	// Create admin user and session
	adminUser := createTestUserForEndpoint(true)
	adminSession := users.NewSession(*adminUser)

	// Set admin session in context
	router.Use(func(c *gin.Context) {
		c.Set("session", adminSession)
		c.Next()
	})

	// Test creating a new user
	userReq := userRequest{
		Username:    "newuser",
		DisplayName: "New User",
		Admin:       false,
	}
	reqBody, _ := json.Marshal(userReq)

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("POST", "/gui/users/", bytes.NewBuffer(reqBody))
	req.Header.Set("Content-Type", "application/json")
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusCreated, w.Code)

	var user db.User
	err := json.Unmarshal(w.Body.Bytes(), &user)
	assert.NoError(t, err)
	assert.Equal(t, userReq.Username, user.Username)
	assert.Equal(t, userReq.DisplayName, *user.DisplayName)
	assert.Equal(t, userReq.Admin, user.Admin)
}

func TestUpdateUser(t *testing.T) {
	// Setup
	router := setupUsersRouter()

	// Create admin user and session
	adminUser := createTestUserForEndpoint(true)
	adminSession := users.NewSession(*adminUser)

	// Create a regular user to update
	regularUser := createTestUserForEndpoint(false)

	// Set admin session in context
	router.Use(func(c *gin.Context) {
		c.Set("session", adminSession)
		c.Next()
	})

	// Test updating a user
	updateReq := userUpdateRequest{
		DisplayName: "Updated User",
		Admin:       true,
	}
	reqBody, _ := json.Marshal(updateReq)

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("PUT", fmt.Sprintf("/gui/users/%d", regularUser.ID), bytes.NewBuffer(reqBody))
	req.Header.Set("Content-Type", "application/json")
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusOK, w.Code)

	var user db.User
	err := json.Unmarshal(w.Body.Bytes(), &user)
	assert.NoError(t, err)
	assert.Equal(t, regularUser.ID, user.ID)
	assert.Equal(t, regularUser.Username, user.Username)
	assert.Equal(t, updateReq.DisplayName, *user.DisplayName)
	assert.Equal(t, updateReq.Admin, user.Admin)
}

func TestDeleteUser(t *testing.T) {
	// Setup
	router := setupUsersRouter()

	// Create admin user and session
	adminUser := createTestUserForEndpoint(true)
	adminSession := users.NewSession(*adminUser)

	// Create a regular user to delete
	regularUser := createTestUserForEndpoint(false)

	// Set admin session in context
	router.Use(func(c *gin.Context) {
		c.Set("session", adminSession)
		c.Next()
	})

	// Test deleting a user
	w := httptest.NewRecorder()
	req, _ := http.NewRequest("DELETE", fmt.Sprintf("/gui/users/%d", regularUser.ID), nil)
	req.Header.Set("Content-Type", "application/json")
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusOK, w.Code)

	// Verify the user was deleted
	var response map[string]string
	err := json.Unmarshal(w.Body.Bytes(), &response)
	assert.NoError(t, err)
	assert.Equal(t, "User deleted successfully", response["message"])

	// Try to get the deleted user
	w = httptest.NewRecorder()
	req, _ = http.NewRequest("GET", fmt.Sprintf("/gui/users/%d", regularUser.ID), nil)
	req.Header.Set("Content-Type", "application/json")
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusNotFound, w.Code)
}

func TestDeleteSelf(t *testing.T) {
	// Setup
	router := setupUsersRouter()

	// Create admin user and session
	adminUser := createTestUserForEndpoint(true)
	adminSession := users.NewSession(*adminUser)

	// Set admin session in context
	router.Use(func(c *gin.Context) {
		c.Set("session", adminSession)
		c.Next()
	})

	// Test deleting self
	w := httptest.NewRecorder()
	req, _ := http.NewRequest("DELETE", fmt.Sprintf("/gui/users/%d", adminUser.ID), nil)
	req.Header.Set("Content-Type", "application/json")
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusBadRequest, w.Code)

	// Verify the error message
	var response map[string]string
	err := json.Unmarshal(w.Body.Bytes(), &response)
	assert.NoError(t, err)
	assert.Equal(t, "Cannot delete your own account", response["error"])
}