Never use /api/v1 from Gitea UI Pages (#19318)

Reusing `/api/v1` from Gitea UI Pages have pros and cons.
Pros:
1) Less code copy

Cons:
1) API/v1 have to support shared session with page requests.
2) You need to consider for each other when you want to change something about api/v1 or page.

This PR moves all dependencies to API/v1 from UI Pages.

Partially replace #16052  

4 files changed, 309 insertions, 0 deletions

diff --git a/integrations/issue_test.go b/integrations/issue_test.go
index 6a9b48e5a4..8a58f59baa 100644
--- a/integrations/issue_test.go
+++ b/integrations/issue_test.go
@@ -7,6 +7,7 @@ package integrations
 import (
 	"fmt"
 	"net/http"
+	"net/url"
 	"path"
 	"strconv"
 	"strings"
@@ -20,6 +21,7 @@ import (
 	"code.gitea.io/gitea/modules/indexer/issues"
 	"code.gitea.io/gitea/modules/references"
 	"code.gitea.io/gitea/modules/setting"
+	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/test"
 
 	"github.com/PuerkitoBio/goquery"
@@ -347,3 +349,209 @@ func TestIssueRedirect(t *testing.T) {
 	resp = session.MakeRequest(t, req, http.StatusSeeOther)
 	assert.Equal(t, "/"+path.Join("org26", "repo_external_tracker_alpha", "pulls", "1"), test.RedirectURL(resp))
 }
+
+func TestSearchIssues(t *testing.T) {
+	defer prepareTestEnv(t)()
+
+	session := loginUser(t, "user2")
+
+	link, _ := url.Parse("/issues/search")
+	req := NewRequest(t, "GET", link.String())
+	resp := session.MakeRequest(t, req, http.StatusOK)
+	var apiIssues []*api.Issue
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 10)
+
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 10)
+
+	since := "2000-01-01T00%3A50%3A01%2B00%3A00" // 946687801
+	before := time.Unix(999307200, 0).Format(time.RFC3339)
+	query := url.Values{}
+	query.Add("since", since)
+	query.Add("before", before)
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 8)
+	query.Del("since")
+	query.Del("before")
+
+	query.Add("state", "closed")
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 2)
+
+	query.Set("state", "all")
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.EqualValues(t, "15", resp.Header().Get("X-Total-Count"))
+	assert.Len(t, apiIssues, 10) // there are more but 10 is page item limit
+
+	query.Add("limit", "20")
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 15)
+
+	query = url.Values{"assigned": {"true"}, "state": {"all"}}
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 1)
+
+	query = url.Values{"milestones": {"milestone1"}, "state": {"all"}}
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 1)
+
+	query = url.Values{"milestones": {"milestone1,milestone3"}, "state": {"all"}}
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 2)
+
+	query = url.Values{"owner": {"user2"}} // user
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 6)
+
+	query = url.Values{"owner": {"user3"}} // organization
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 3)
+
+	query = url.Values{"owner": {"user3"}, "team": {"team1"}} // organization + team
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 2)
+}
+
+func TestSearchIssuesWithLabels(t *testing.T) {
+	defer prepareTestEnv(t)()
+
+	session := loginUser(t, "user1")
+
+	link, _ := url.Parse("/api/v1/repos/issues/search")
+	req := NewRequest(t, "GET", link.String())
+	resp := session.MakeRequest(t, req, http.StatusOK)
+	var apiIssues []*api.Issue
+	DecodeJSON(t, resp, &apiIssues)
+
+	assert.Len(t, apiIssues, 10)
+
+	query := url.Values{}
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 10)
+
+	query.Add("labels", "label1")
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 2)
+
+	// multiple labels
+	query.Set("labels", "label1,label2")
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 2)
+
+	// an org label
+	query.Set("labels", "orglabel4")
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 1)
+
+	// org and repo label
+	query.Set("labels", "label2,orglabel4")
+	query.Add("state", "all")
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 2)
+
+	// org and repo label which share the same issue
+	query.Set("labels", "label1,orglabel4")
+	link.RawQuery = query.Encode()
+	req = NewRequest(t, "GET", link.String())
+	resp = session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &apiIssues)
+	assert.Len(t, apiIssues, 2)
+}
+
+func TestGetIssueInfo(t *testing.T) {
+	defer prepareTestEnv(t)()
+
+	issue := unittest.AssertExistsAndLoadBean(t, &models.Issue{ID: 10}).(*models.Issue)
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: issue.RepoID}).(*repo_model.Repository)
+	owner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID}).(*user_model.User)
+	assert.NoError(t, issue.LoadAttributes())
+	assert.Equal(t, int64(1019307200), int64(issue.DeadlineUnix))
+	assert.Equal(t, api.StateOpen, issue.State())
+
+	session := loginUser(t, owner.Name)
+
+	urlStr := fmt.Sprintf("/%s/%s/issues/%d/info", owner.Name, repo.Name, issue.Index)
+	req := NewRequest(t, "GET", urlStr)
+	resp := session.MakeRequest(t, req, http.StatusOK)
+	var apiIssue api.Issue
+	DecodeJSON(t, resp, &apiIssue)
+
+	assert.EqualValues(t, issue.ID, apiIssue.ID)
+}
+
+func TestUpdateIssueDeadline(t *testing.T) {
+	defer prepareTestEnv(t)()
+
+	issueBefore := unittest.AssertExistsAndLoadBean(t, &models.Issue{ID: 10}).(*models.Issue)
+	repoBefore := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: issueBefore.RepoID}).(*repo_model.Repository)
+	owner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repoBefore.OwnerID}).(*user_model.User)
+	assert.NoError(t, issueBefore.LoadAttributes())
+	assert.Equal(t, int64(1019307200), int64(issueBefore.DeadlineUnix))
+	assert.Equal(t, api.StateOpen, issueBefore.State())
+
+	session := loginUser(t, owner.Name)
+
+	issueURL := fmt.Sprintf("%s/%s/issues/%d", owner.Name, repoBefore.Name, issueBefore.Index)
+	req := NewRequest(t, "GET", issueURL)
+	resp := session.MakeRequest(t, req, http.StatusOK)
+	htmlDoc := NewHTMLParser(t, resp.Body)
+
+	urlStr := issueURL + "/deadline?_csrf=" + htmlDoc.GetCSRF()
+	req = NewRequestWithJSON(t, "POST", urlStr, map[string]string{
+		"due_date": "2022-04-06T00:00:00.000Z",
+	})
+
+	resp = session.MakeRequest(t, req, http.StatusCreated)
+	var apiIssue api.IssueDeadline
+	DecodeJSON(t, resp, &apiIssue)
+
+	assert.EqualValues(t, "2022-04-06", apiIssue.Deadline.Format("2006-01-02"))
+}
diff --git a/integrations/org_test.go b/integrations/org_test.go
index 794475a924..227a1b8d40 100644
--- a/integrations/org_test.go
+++ b/integrations/org_test.go
@@ -10,6 +10,8 @@ import (
 	"strings"
 	"testing"
 
+	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
 	api "code.gitea.io/gitea/modules/structs"
 
 	"github.com/stretchr/testify/assert"
@@ -173,3 +175,30 @@ func TestOrgRestrictedUser(t *testing.T) {
 	req = NewRequest(t, "GET", fmt.Sprintf("/%s/%s", orgName, repoName))
 	restrictedSession.MakeRequest(t, req, http.StatusOK)
 }
+
+func TestTeamSearch(t *testing.T) {
+	defer prepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2}).(*user_model.User)
+	org := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 3}).(*user_model.User)
+
+	var results TeamSearchResults
+
+	session := loginUser(t, user.Name)
+	csrf := GetCSRF(t, session, "/"+org.Name)
+	req := NewRequestf(t, "GET", "/org/%s/teams/-/search?q=%s", org.Name, "_team")
+	req.Header.Add("X-Csrf-Token", csrf)
+	resp := session.MakeRequest(t, req, http.StatusOK)
+	DecodeJSON(t, resp, &results)
+	assert.NotEmpty(t, results.Data)
+	assert.Len(t, results.Data, 1)
+	assert.Equal(t, "test_team", results.Data[0].Name)
+
+	// no access if not organization member
+	user5 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 5}).(*user_model.User)
+	session = loginUser(t, user5.Name)
+	csrf = GetCSRF(t, session, "/"+org.Name)
+	req = NewRequestf(t, "GET", "/org/%s/teams/-/search?q=%s", org.Name, "team")
+	req.Header.Add("X-Csrf-Token", csrf)
+	session.MakeRequest(t, req, http.StatusNotFound)
+}
diff --git a/integrations/repo_topic_test.go b/integrations/repo_topic_test.go
new file mode 100644
index 0000000000..146f90e710
--- /dev/null
+++ b/integrations/repo_topic_test.go
@@ -0,0 +1,46 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package integrations
+
+import (
+	"net/http"
+	"net/url"
+	"testing"
+
+	api "code.gitea.io/gitea/modules/structs"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTopicSearch(t *testing.T) {
+	defer prepareTestEnv(t)()
+	searchURL, _ := url.Parse("/explore/topics/search")
+	var topics struct {
+		TopicNames []*api.TopicResponse `json:"topics"`
+	}
+
+	query := url.Values{"page": []string{"1"}, "limit": []string{"4"}}
+
+	searchURL.RawQuery = query.Encode()
+	res := MakeRequest(t, NewRequest(t, "GET", searchURL.String()), http.StatusOK)
+	DecodeJSON(t, res, &topics)
+	assert.Len(t, topics.TopicNames, 4)
+	assert.EqualValues(t, "6", res.Header().Get("x-total-count"))
+
+	query.Add("q", "topic")
+	searchURL.RawQuery = query.Encode()
+	res = MakeRequest(t, NewRequest(t, "GET", searchURL.String()), http.StatusOK)
+	DecodeJSON(t, res, &topics)
+	assert.Len(t, topics.TopicNames, 2)
+
+	query.Set("q", "database")
+	searchURL.RawQuery = query.Encode()
+	res = MakeRequest(t, NewRequest(t, "GET", searchURL.String()), http.StatusOK)
+	DecodeJSON(t, res, &topics)
+	if assert.Len(t, topics.TopicNames, 1) {
+		assert.EqualValues(t, 2, topics.TopicNames[0].ID)
+		assert.EqualValues(t, "database", topics.TopicNames[0].Name)
+		assert.EqualValues(t, 1, topics.TopicNames[0].RepoCount)
+	}
+}
diff --git a/integrations/user_test.go b/integrations/user_test.go
index e8fbccd51e..d0523d8b3a 100644
--- a/integrations/user_test.go
+++ b/integrations/user_test.go
@@ -8,8 +8,11 @@ import (
 	"net/http"
 	"testing"
 
+	"code.gitea.io/gitea/models"
+	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
+	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/test"
 	"code.gitea.io/gitea/modules/translation/i18n"
 
@@ -222,3 +225,26 @@ func testExportUserGPGKeys(t *testing.T, user, expected string) {
 	// t.Log(resp.Body.String())
 	assert.Equal(t, expected, resp.Body.String())
 }
+
+func TestListStopWatches(t *testing.T) {
+	defer prepareTestEnv(t)()
+
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1}).(*repo_model.Repository)
+	owner := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID}).(*user_model.User)
+
+	session := loginUser(t, owner.Name)
+	req := NewRequestf(t, "GET", "/user/stopwatches")
+	resp := session.MakeRequest(t, req, http.StatusOK)
+	var apiWatches []*api.StopWatch
+	DecodeJSON(t, resp, &apiWatches)
+	stopwatch := unittest.AssertExistsAndLoadBean(t, &models.Stopwatch{UserID: owner.ID}).(*models.Stopwatch)
+	issue := unittest.AssertExistsAndLoadBean(t, &models.Issue{ID: stopwatch.IssueID}).(*models.Issue)
+	if assert.Len(t, apiWatches, 1) {
+		assert.EqualValues(t, stopwatch.CreatedUnix.AsTime().Unix(), apiWatches[0].Created.Unix())
+		assert.EqualValues(t, issue.Index, apiWatches[0].IssueIndex)
+		assert.EqualValues(t, issue.Title, apiWatches[0].IssueTitle)
+		assert.EqualValues(t, repo.Name, apiWatches[0].RepoName)
+		assert.EqualValues(t, repo.OwnerName, apiWatches[0].RepoOwnerName)
+		assert.Greater(t, int64(apiWatches[0].Seconds), int64(0))
+	}
+}