package test

import (
	"GoCMS/domain/post"
	"bytes"
	"encoding/json"
	"github.com/stretchr/testify/assert"
	"io"
	"net/http"
	"strconv"
	"testing"
)

var TestCreatePostSuccess = func(t *testing.T) {
	jsonBody, err := json.Marshal(map[string]string{
		"title": "Test Title",
		"body":  "Test Body",
	})
	if err != nil {
		t.Fatal(err)
	}

	r, _ := ApiRequest("POST", "/post", bytes.NewBuffer(jsonBody))

	var response post.Post
	bd, err := io.ReadAll(r.Body)
	if err != nil {
		t.Fatal(err)
	}

	err = json.Unmarshal(bd, &response)
	if err != nil {
		t.Fatal(err)
	}

	assert.Equal(t, http.StatusOK, r.StatusCode)
	assert.Equal(t, "Test Title", response.Title)
	assert.Equal(t, "Test Body", response.Body)
}

var TestCreatePostFailTitleMissing = func(t *testing.T) {
	jsonBody, err := json.Marshal(map[string]string{
		"body": "Test Body",
	})
	if err != nil {
		t.Fatal(err)
	}

	r, _ := ApiRequest("POST", "/post", bytes.NewBuffer(jsonBody))

	assert.Equal(t, http.StatusBadRequest, r.StatusCode)
}

var TestCreatePostTitleTooShort = func(t *testing.T) {
	jsonBody, err := json.Marshal(map[string]string{
		"title": "Te",
		"body":  "Test Body",
	})
	if err != nil {
		t.Fatal(err)
	}

	r, _ := ApiRequest("POST", "/post", bytes.NewBuffer(jsonBody))

	assert.Equal(t, http.StatusBadRequest, r.StatusCode)
}

var TestGetPostSuccess = func(t *testing.T) {
	var createdPost post.Post
	var postToCreate = post.Post{
		Title: "Test Title",
		Body:  "Test Body",
	}
	db := GetDb()
	db.Create(&postToCreate).Scan(&createdPost)

	r, _ := ApiRequest("GET", "/post/"+strconv.Itoa(int(createdPost.ID)), nil)

	var response post.Post
	bd, err := io.ReadAll(r.Body)
	if err != nil {
		t.Fatal(err)
	}

	err = json.Unmarshal(bd, &response)
	if err != nil {
		t.Fatal(err)
	}

	assert.Equal(t, http.StatusOK, r.StatusCode)
	assert.Equal(t, createdPost.ID, response.ID)
	assert.Equal(t, createdPost.Title, response.Title)
	assert.Equal(t, createdPost.Body, response.Body)
}

var TestGetAllPostsSuccess = func(t *testing.T) {
	var createdPost post.Post
	var postToCreate = post.Post{
		Title: "Test Title",
		Body:  "Test Body",
	}
	db := GetDb()
	db.Create(&postToCreate).Scan(&createdPost)

	r, _ := ApiRequest("GET", "/post", nil)

	var response []post.Post
	bd, err := io.ReadAll(r.Body)
	if err != nil {
		t.Fatal(err)
	}

	err = json.Unmarshal(bd, &response)
	if err != nil {
		t.Fatal(err)
	}

	assert.Equal(t, http.StatusOK, r.StatusCode)
	assert.Equal(t, createdPost.Title, response[0].Title)
	assert.Equal(t, createdPost.Body, response[0].Body)
}

var TestPostCreate = func(t *testing.T) {
	t.Run("Should return a post with the given title and body", TestCreatePostSuccess)
	t.Run("Should return an error if the title is missing", TestCreatePostFailTitleMissing)
	t.Run("Should return an error if the title is too short", TestCreatePostTitleTooShort)
}

var TestPostGet = func(t *testing.T) {
	t.Run("Should return a post with the given id", TestGetPostSuccess)
}

var TestPostGetAll = func(t *testing.T) {
	t.Run("Should return all posts", TestGetAllPostsSuccess)
}

func TestPost(t *testing.T) {
	StartServerIfNotAlready()
	WaitForServer()

	t.Run("Create", TestPostCreate)
	t.Run("Get", TestPostGet)
	t.Run("GetAll", TestPostGetAll)
}