// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package actions

import (
	"testing"

	"code.gitea.io/gitea/modules/git"
	api "code.gitea.io/gitea/modules/structs"
	webhook_module "code.gitea.io/gitea/modules/webhook"

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

func TestDetectMatched(t *testing.T) {
	testCases := []struct {
		desc         string
		commit       *git.Commit
		triggedEvent webhook_module.HookEventType
		payload      api.Payloader
		yamlOn       string
		expected     bool
	}{
		{
			desc:         "HookEventCreate(create) matches GithubEventCreate(create)",
			triggedEvent: webhook_module.HookEventCreate,
			payload:      nil,
			yamlOn:       "on: create",
			expected:     true,
		},
		{
			desc:         "HookEventIssues(issues) `opened` action matches GithubEventIssues(issues)",
			triggedEvent: webhook_module.HookEventIssues,
			payload:      &api.IssuePayload{Action: api.HookIssueOpened},
			yamlOn:       "on: issues",
			expected:     true,
		},
		{
			desc:         "HookEventIssues(issues) `milestoned` action matches GithubEventIssues(issues)",
			triggedEvent: webhook_module.HookEventIssues,
			payload:      &api.IssuePayload{Action: api.HookIssueMilestoned},
			yamlOn:       "on: issues",
			expected:     true,
		},
		{
			desc:         "HookEventPullRequestSync(pull_request_sync) matches GithubEventPullRequest(pull_request)",
			triggedEvent: webhook_module.HookEventPullRequestSync,
			payload:      &api.PullRequestPayload{Action: api.HookIssueSynchronized},
			yamlOn:       "on: pull_request",
			expected:     true,
		},
		{
			desc:         "HookEventPullRequest(pull_request) `label_updated` action doesn't match GithubEventPullRequest(pull_request) with no activity type",
			triggedEvent: webhook_module.HookEventPullRequest,
			payload:      &api.PullRequestPayload{Action: api.HookIssueLabelUpdated},
			yamlOn:       "on: pull_request",
			expected:     false,
		},
		{
			desc:         "HookEventPullRequest(pull_request) `closed` action doesn't match GithubEventPullRequest(pull_request) with no activity type",
			triggedEvent: webhook_module.HookEventPullRequest,
			payload:      &api.PullRequestPayload{Action: api.HookIssueClosed},
			yamlOn:       "on: pull_request",
			expected:     false,
		},
		{
			desc:         "HookEventPullRequest(pull_request) `closed` action doesn't match GithubEventPullRequest(pull_request) with branches",
			triggedEvent: webhook_module.HookEventPullRequest,
			payload: &api.PullRequestPayload{
				Action: api.HookIssueClosed,
				PullRequest: &api.PullRequest{
					Base: &api.PRBranchInfo{},
				},
			},
			yamlOn:   "on:\n  pull_request:\n    branches: [main]",
			expected: false,
		},
		{
			desc:         "HookEventPullRequest(pull_request) `label_updated` action matches GithubEventPullRequest(pull_request) with `label` activity type",
			triggedEvent: webhook_module.HookEventPullRequest,
			payload:      &api.PullRequestPayload{Action: api.HookIssueLabelUpdated},
			yamlOn:       "on:\n  pull_request:\n    types: [labeled]",
			expected:     true,
		},
		{
			desc:         "HookEventPullRequestReviewComment(pull_request_review_comment) matches GithubEventPullRequestReviewComment(pull_request_review_comment)",
			triggedEvent: webhook_module.HookEventPullRequestReviewComment,
			payload:      &api.PullRequestPayload{Action: api.HookIssueReviewed},
			yamlOn:       "on:\n  pull_request_review_comment:\n    types: [created]",
			expected:     true,
		},
		{
			desc:         "HookEventPullRequestReviewRejected(pull_request_review_rejected) doesn't match GithubEventPullRequestReview(pull_request_review) with `dismissed` activity type (we don't support `dismissed` at present)",
			triggedEvent: webhook_module.HookEventPullRequestReviewRejected,
			payload:      &api.PullRequestPayload{Action: api.HookIssueReviewed},
			yamlOn:       "on:\n  pull_request_review:\n    types: [dismissed]",
			expected:     false,
		},
		{
			desc:         "HookEventRelease(release) `published` action matches GithubEventRelease(release) with `published` activity type",
			triggedEvent: webhook_module.HookEventRelease,
			payload:      &api.ReleasePayload{Action: api.HookReleasePublished},
			yamlOn:       "on:\n  release:\n    types: [published]",
			expected:     true,
		},
		{
			desc:         "HookEventPackage(package) `created` action doesn't match GithubEventRegistryPackage(registry_package) with `updated` activity type",
			triggedEvent: webhook_module.HookEventPackage,
			payload:      &api.PackagePayload{Action: api.HookPackageCreated},
			yamlOn:       "on:\n  registry_package:\n    types: [updated]",
			expected:     false,
		},
		{
			desc:         "HookEventWiki(wiki) matches GithubEventGollum(gollum)",
			triggedEvent: webhook_module.HookEventWiki,
			payload:      nil,
			yamlOn:       "on: gollum",
			expected:     true,
		},
		{
			desc:         "HookEventSchedue(schedule) matches GithubEventSchedule(schedule)",
			triggedEvent: webhook_module.HookEventSchedule,
			payload:      nil,
			yamlOn:       "on: schedule",
			expected:     true,
		},
	}

	for _, tc := range testCases {
		t.Run(tc.desc, func(t *testing.T) {
			evts, err := GetEventsFromContent([]byte(tc.yamlOn))
			assert.NoError(t, err)
			assert.Len(t, evts, 1)
			assert.Equal(t, tc.expected, detectMatched(nil, tc.commit, tc.triggedEvent, tc.payload, evts[0]))
		})
	}
}

func TestMatchIssuesEvent(t *testing.T) {
	testCases := []struct {
		desc      string
		payload   *api.IssuePayload
		yamlOn    string
		expected  bool
		eventType string
	}{
		{
			desc: "Label deletion should trigger unlabeled event",
			payload: &api.IssuePayload{
				Action: api.HookIssueLabelUpdated,
				Issue: &api.Issue{
					Labels: []*api.Label{},
				},
				RemovedLabels: []*api.Label{
					{ID: 123, Name: "deleted-label"},
				},
			},
			yamlOn:    "on:\n  issues:\n    types: [unlabeled]",
			expected:  true,
			eventType: "unlabeled",
		},
		{
			desc: "Label deletion with existing labels should trigger unlabeled event",
			payload: &api.IssuePayload{
				Action: api.HookIssueLabelUpdated,
				Issue: &api.Issue{
					Labels: []*api.Label{
						{ID: 456, Name: "existing-label"},
					},
				},
				RemovedLabels: []*api.Label{
					{ID: 123, Name: "deleted-label"},
				},
			},
			yamlOn:    "on:\n  issues:\n    types: [unlabeled]",
			expected:  true,
			eventType: "unlabeled",
		},
		{
			desc: "Label addition should trigger labeled event",
			payload: &api.IssuePayload{
				Action: api.HookIssueLabelUpdated,
				Issue: &api.Issue{
					Labels: []*api.Label{
						{ID: 123, Name: "new-label"},
					},
				},
				RemovedLabels: []*api.Label{}, // Empty array, no labels removed
			},
			yamlOn:    "on:\n  issues:\n    types: [labeled]",
			expected:  true,
			eventType: "labeled",
		},
		{
			desc: "Label clear should trigger unlabeled event",
			payload: &api.IssuePayload{
				Action: api.HookIssueLabelCleared,
				Issue: &api.Issue{
					Labels: []*api.Label{},
				},
			},
			yamlOn:    "on:\n  issues:\n    types: [unlabeled]",
			expected:  true,
			eventType: "unlabeled",
		},
		{
			desc: "Both adding and removing labels should trigger labeled event",
			payload: &api.IssuePayload{
				Action: api.HookIssueLabelUpdated,
				Issue: &api.Issue{
					Labels: []*api.Label{
						{ID: 789, Name: "new-label"},
					},
				},
				RemovedLabels: []*api.Label{
					{ID: 123, Name: "deleted-label"},
				},
			},
			yamlOn:    "on:\n  issues:\n    types: [labeled]",
			expected:  true,
			eventType: "labeled",
		},
		{
			desc: "Both adding and removing labels should trigger unlabeled event",
			payload: &api.IssuePayload{
				Action: api.HookIssueLabelUpdated,
				Issue: &api.Issue{
					Labels: []*api.Label{
						{ID: 789, Name: "new-label"},
					},
				},
				RemovedLabels: []*api.Label{
					{ID: 123, Name: "deleted-label"},
				},
			},
			yamlOn:    "on:\n  issues:\n    types: [unlabeled]",
			expected:  true,
			eventType: "unlabeled",
		},
		{
			desc: "Both adding and removing labels should trigger both events",
			payload: &api.IssuePayload{
				Action: api.HookIssueLabelUpdated,
				Issue: &api.Issue{
					Labels: []*api.Label{
						{ID: 789, Name: "new-label"},
					},
				},
				RemovedLabels: []*api.Label{
					{ID: 123, Name: "deleted-label"},
				},
			},
			yamlOn:    "on:\n  issues:\n    types: [labeled, unlabeled]",
			expected:  true,
			eventType: "multiple",
		},
	}

	for _, tc := range testCases {
		t.Run(tc.desc, func(t *testing.T) {
			evts, err := GetEventsFromContent([]byte(tc.yamlOn))
			assert.NoError(t, err)
			assert.Len(t, evts, 1)

			// Test if the event matches as expected
			assert.Equal(t, tc.expected, matchIssuesEvent(tc.payload, evts[0]))

			// For extra validation, check that action mapping works correctly
			if tc.eventType == "multiple" {
				// Skip direct action mapping validation for multiple events case
				// as one action can map to multiple event types
				return
			}

			// Determine expected action for single event case
			var expectedAction string
			switch tc.payload.Action {
			case api.HookIssueLabelUpdated:
				if tc.eventType == "labeled" {
					expectedAction = "labeled"
				} else if tc.eventType == "unlabeled" {
					expectedAction = "unlabeled"
				}
			case api.HookIssueLabelCleared:
				expectedAction = "unlabeled"
			default:
				expectedAction = string(tc.payload.Action)
			}

			assert.Equal(t, tc.eventType, expectedAction, "Event type should match expected")
		})
	}
}