// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
 
package main

import (
_ "fmt"
  "context"
  "testing"
  "net/http"
  "net/http/httptest"
_ "net/url"
_ "io"
  "github.com/stretchr/testify/assert"
  "encoding/json"
_ "encoding/base64"
  "strings"
  "tagger/httptest/stream"
  "github.com/gin-contrib/sse"
  "tagger/tests/mocks"
  "tagger/internal/models"
  "encoding/base64"
)

func TestRouter(t *testing.T) {
  app := NewApp(nil)
  assert.NotNil(t, app)
}

func TestPingRoute(t *testing.T) {
  app := NewApp(nil)

  w := httptest.NewRecorder()
  req, _ := http.NewRequest("GET", app.BasePath() + "/ping", nil)
  app.ServeHTTP(w, req)

  assert.Equal(t, 200, w.Code)
  assert.Equal(t, "pong", w.Body.String())
}

func TestTagsRoute(t *testing.T) {
  expected := []string { "search-engine", "evil", "done-that" }
  var results []string

  m := &mocks.MockDataConnector {
    InjectTags: func(context.Context) ([]string) { return expected },
  }

  app := NewApp(m)

  w := httptest.NewRecorder()
  req, _ := http.NewRequest("GET", app.BasePath() + "/tags", nil)
  req.Header.Set("Content-Type", "application/json")
  app.ServeHTTP(w, req)

  assert.Equal(t, 200, w.Code)

  json.NewDecoder(w.Body).Decode(&results)
  assert.Equal(t, len(expected), len(results))
  for i,v := range(results) {
    assert.Equal(t, expected[i], v)
  }
}

func TestTagsStreamRoute(t *testing.T) {
  expected := []string { "search-engine", "evil", "done-that" }
  //var results []string

  m := &mocks.MockDataConnector {
    InjectTags: func(context.Context) ([]string) { return expected },
  }

  app := NewApp(m)

  w := stream.NewRecorder()
  req, _ := http.NewRequest("GET", app.BasePath() + "/tags", nil)
  req.Header.Set("Content-Type", "text/event-stream")
  go app.ServeHTTP(w, req)

  for !w.Flushed {}
  w.Close()

  assert.Equal(t, 200, w.Code)

  events, _ := sse.Decode(w.Body)
  assert.Equal(t, len(expected), len(events))
  for i,v := range(events) {
    assert.Equal(t, expected[i], v.Data)
  }
}

func TestTagRoute(t *testing.T) {
  expected := []string { "https://www.google.com", "https://www.bing.com" }
  var result models.Tag
 
  m := &mocks.MockDataConnector {
    InjectQuery: func(context.Context, []string) ([]string, error) { return expected, nil },
  }

  app := NewApp(m)

  w := httptest.NewRecorder()
  req, _ := http.NewRequest("GET", app.BasePath() + "/tags/search-engine", nil)
  app.ServeHTTP(w, req)
                                       
  assert.Equal(t, 200, w.Code)
  json.NewDecoder(w.Body).Decode(&result)
  assert.Equal(t, len(expected), len(result.Resources))
  assert.Equal(t, expected, result.Resources)
}


func TestTagStream(t *testing.T) {
  app := NewApp(nil)
  w := stream.NewRecorder()
  req, _ := http.NewRequest("GET", app.BasePath() + "/tags", nil)
  req.Header.Set("Content-Type", "text/event-stream")
  go app.ServeHTTP(w, req)

  w.Close()

  assert.Equal(t, 200, w.Code)
}

func TestTagPost(t *testing.T) {
  expected := []string { "https://www.google.com", "https://www.bing.com", "https://www.yahoo.com" }
  var result models.Tag

  m := &mocks.MockDataConnector {
    InjectQuery: func(context.Context, []string) ([]string, error) { return expected, nil },
  }

  app := NewApp(m)

  w := httptest.NewRecorder()
  jsonReader := strings.NewReader(`{ "resource": "https://www.yahoo.com" }`)
  reqPost, _ := http.NewRequest("PUT", app.BasePath() + "/tags/search-engine", jsonReader)

  wget := httptest.NewRecorder()
  reqGet, _ := http.NewRequest("GET", app.BasePath() + "/tags/search-engine", nil)
  app.ServeHTTP(w, reqPost)
  assert.Equal(t, 200, w.Code)
  
  app.ServeHTTP(wget, reqGet)

  assert.Equal(t, 200, wget.Code)
  json.NewDecoder(wget.Body).Decode(&result)
  assert.Contains(t, result.Resources, "https://www.yahoo.com")
}

func TestTagUpdate(t *testing.T) {
  expected := []string { "https://www.google.com", "https://www.bing.com", "https://www.yahoo.com" }
  var result models.Tag
  
  m := &mocks.MockDataConnector {
    InjectQuery: func(context.Context, []string) ([]string, error) { return expected, nil },
    InjectAddTag: func(context.Context, string, string) (error) { return nil },
  }

  app := NewApp(m)

  w := httptest.NewRecorder()
  jsonReader := strings.NewReader(`{ "name": "search-engine", "resources": [ "https://www.yahoo.com" ] }`)
  reqPost, _ := http.NewRequest("POST", app.BasePath() + "/tags", jsonReader)

  wget := httptest.NewRecorder()
  reqGet, _ := http.NewRequest("GET", app.BasePath() + "/tags/search-engine", nil)
  app.ServeHTTP(w, reqPost)
  assert.Equal(t, 200, w.Code)
  
  app.ServeHTTP(wget, reqGet)

  assert.Equal(t, 200, wget.Code)
  json.NewDecoder(wget.Body).Decode(&result)
  assert.Contains(t, result.Resources, "https://www.yahoo.com")
}

func TestTagAddResource(t *testing.T) {
  expected := []string { "https://www.google.com", "https://www.bing.com", "https://www.yahoo.com" }
  var result models.Tag
  
  m := &mocks.MockDataConnector {
    InjectQuery: func(context.Context, []string) ([]string, error) { return expected, nil },
    InjectAddTag: func(context.Context, string, string) (error) { return nil },
  }

  app := NewApp(m)

  w := httptest.NewRecorder()
  jsonReader := strings.NewReader(`{ "resource": "https://www.yahoo.com" }`)
  reqPost, _ := http.NewRequest("POST", app.BasePath() + "/tags/search-engine", jsonReader)

  wget := httptest.NewRecorder()
  reqGet, _ := http.NewRequest("GET", app.BasePath() + "/tags/search-engine", nil)
  app.ServeHTTP(w, reqPost)
  assert.Equal(t, 200, w.Code)
  
  app.ServeHTTP(wget, reqGet)

  assert.Equal(t, 200, wget.Code)
  json.NewDecoder(wget.Body).Decode(&result)
  assert.Contains(t, result.Resources, "https://www.yahoo.com")
  
}

func TestGetResourceTags(t *testing.T) {

  m := &mocks.MockDataConnector {
    InjectTags: func(context.Context) ([]string) { return []string{ "search-engine", "news" } },
    InjectResourceHasTag: func(ctx context.Context, res string, tag string) bool { if(tag == "search-engine") { return true } else { return false } },
  }

  app := NewApp(m)

  w := httptest.NewRecorder()
  
  reqGet, _ := http.NewRequest("GET", app.BasePath() + "/resources/" + base64.StdEncoding.EncodeToString([]byte("https://www.yahoo.com")), nil)
  reqGet.Header.Set("Content-Type", "application/json")
  app.ServeHTTP(w, reqGet)
  
  assert.Equal(t, 200, w.Code)
  result, e := models.NewResourceFromJson(w.Body)
  assert.Equal(t, nil, e)
  assert.Contains(t, result.Tags, "search-engine")
}