// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package integration

import (
	"fmt"
	"net/http"
	"strconv"
	"testing"

	auth_model "gitea.dev/models/auth"
	"gitea.dev/models/db"
	issues_model "gitea.dev/models/issues"
	"gitea.dev/models/perm"
	access_model "gitea.dev/models/perm/access"
	repo_model "gitea.dev/models/repo"
	"gitea.dev/models/unit"
	"gitea.dev/models/unittest"
	user_model "gitea.dev/models/user"
	api "gitea.dev/modules/structs"
	"gitea.dev/modules/test"
	repo_service "gitea.dev/services/repository"
	"gitea.dev/tests"

	"github.com/stretchr/testify/assert"
)

func enableRepoDependencies(t *testing.T, repoID int64) {
	t.Helper()

	repoUnit := unittest.AssertExistsAndLoadBean(t, &repo_model.RepoUnit{RepoID: repoID, Type: unit.TypeIssues})
	repoUnit.IssuesConfig().EnableDependencies = true
	assert.NoError(t, repo_model.UpdateRepoUnitConfig(t.Context(), repoUnit))
}

func TestAPICreateIssueDependencyCrossRepoPermission(t *testing.T) {
	defer tests.PrepareTestEnv(t)()

	for _, method := range []string{"POST", "DELETE"} {
		t.Run(method, func(t *testing.T) {
			if method == "DELETE" {
				assert.NoError(t, unittest.LoadFixtures())
			}

			targetRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
			targetIssue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{RepoID: targetRepo.ID, Index: 1})
			dependencyRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 3})
			assert.True(t, dependencyRepo.IsPrivate)
			dependencyIssue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{RepoID: dependencyRepo.ID, Index: 1})

			enableRepoDependencies(t, targetIssue.RepoID)
			enableRepoDependencies(t, dependencyRepo.ID)

			if method == "DELETE" {
				user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
				assert.NoError(t, issues_model.CreateIssueDependency(t.Context(), user1, targetIssue, dependencyIssue))
			}

			// remove user 40 access from target repository
			_, err := db.DeleteByID[access_model.Access](t.Context(), 30)
			assert.NoError(t, err)

			url := fmt.Sprintf("/api/v1/repos/%s/%s/issues/%d/dependencies", "user2", "repo1", targetIssue.Index)
			dependencyMeta := &api.IssueMeta{
				Owner: "org3",
				Name:  "repo3",
				Index: dependencyIssue.Index,
			}

			user40 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 40})
			// user40 has no access to both target issue and dependency issue
			writerToken := getUserToken(t, "user40", auth_model.AccessTokenScopeWriteIssue)
			checkDependency := func(expectedStatus int, exists bool) {
				req := NewRequestWithJSON(t, method, url, dependencyMeta).
					AddTokenAuth(writerToken)
				MakeRequest(t, req, expectedStatus)
				if exists {
					unittest.AssertExistsAndLoadBean(t, &issues_model.IssueDependency{
						IssueID:      targetIssue.ID,
						DependencyID: dependencyIssue.ID,
					})
				} else {
					unittest.AssertNotExistsBean(t, &issues_model.IssueDependency{
						IssueID:      targetIssue.ID,
						DependencyID: dependencyIssue.ID,
					})
				}
			}
			checkDependency(http.StatusNotFound, method == "DELETE")

			// add user40 as a collaborator to dependency repository with read permission
			assert.NoError(t, repo_service.AddOrUpdateCollaborator(t.Context(), dependencyRepo, user40, perm.AccessModeRead))

			// try again after getting read permission to dependency repository
			checkDependency(http.StatusNotFound, method == "DELETE")

			// add user40 as a collaborator to target repository with write permission
			assert.NoError(t, repo_service.AddOrUpdateCollaborator(t.Context(), targetRepo, user40, perm.AccessModeWrite))

			checkDependency(http.StatusCreated, method == "POST")
		})
	}

	t.Run("WebDelete", func(t *testing.T) {
		assert.NoError(t, unittest.LoadFixtures())

		targetRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
		targetIssue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{RepoID: targetRepo.ID, Index: 1})
		dependencyRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 3})
		assert.True(t, dependencyRepo.IsPrivate)
		dependencyIssue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{RepoID: dependencyRepo.ID, Index: 1})

		enableRepoDependencies(t, targetIssue.RepoID)
		enableRepoDependencies(t, dependencyRepo.ID)

		user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
		assert.NoError(t, issues_model.CreateIssueDependency(t.Context(), user1, targetIssue, dependencyIssue))

		user40 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 40})
		assert.NoError(t, repo_service.AddOrUpdateCollaborator(t.Context(), targetRepo, user40, perm.AccessModeWrite))

		session := loginUser(t, user40.Name)
		req := NewRequestWithValues(t, "POST", fmt.Sprintf("/user2/repo1/issues/%d/dependency/delete", targetIssue.Index), map[string]string{
			"removeDependencyID": strconv.FormatInt(dependencyIssue.ID, 10),
			"dependencyType":     "blockedBy",
		})
		resp := session.MakeRequest(t, req, http.StatusBadRequest)
		assert.Equal(t, "Permission denied.", test.ParseJSONError(resp.Body.Bytes()).ErrorMessage)
		unittest.AssertExistsAndLoadBean(t, &issues_model.IssueDependency{IssueID: targetIssue.ID, DependencyID: dependencyIssue.ID})

		assert.NoError(t, repo_service.AddOrUpdateCollaborator(t.Context(), dependencyRepo, user40, perm.AccessModeRead))

		req = NewRequestWithValues(t, "POST", fmt.Sprintf("/user2/repo1/issues/%d/dependency/delete", targetIssue.Index), map[string]string{
			"removeDependencyID": strconv.FormatInt(dependencyIssue.ID, 10),
			"dependencyType":     "blockedBy",
		})
		session.MakeRequest(t, req, http.StatusOK)
		unittest.AssertNotExistsBean(t, &issues_model.IssueDependency{IssueID: targetIssue.ID, DependencyID: dependencyIssue.ID})
	})
}