package checks

import (
	"bytes"
	"net/http"
	"testing"

	"github.com/cli/cli/internal/ghrepo"
	"github.com/cli/cli/pkg/cmdutil"
	"github.com/cli/cli/pkg/httpmock"
	"github.com/cli/cli/pkg/iostreams"
	"github.com/cli/cli/test"
	"github.com/google/shlex"
	"github.com/stretchr/testify/assert"
)

func TestNewCmdChecks(t *testing.T) {
	tests := []struct {
		name  string
		cli   string
		wants ChecksOptions
	}{
		{
			name:  "no arguments",
			cli:   "",
			wants: ChecksOptions{},
		},
		{
			name: "pr argument",
			cli:  "1234",
			wants: ChecksOptions{
				SelectorArg: "1234",
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			io, _, _, _ := iostreams.Test()
			f := &cmdutil.Factory{
				IOStreams: io,
			}

			argv, err := shlex.Split(tt.cli)
			assert.NoError(t, err)

			var gotOpts *ChecksOptions
			cmd := NewCmdChecks(f, func(opts *ChecksOptions) error {
				gotOpts = opts
				return nil
			})
			cmd.SetArgs(argv)
			cmd.SetIn(&bytes.Buffer{})
			cmd.SetOut(&bytes.Buffer{})
			cmd.SetErr(&bytes.Buffer{})

			_, err = cmd.ExecuteC()
			assert.NoError(t, err)

			assert.Equal(t, tt.wants.SelectorArg, gotOpts.SelectorArg)
		})
	}
}

func Test_checksRun(t *testing.T) {
	tests := []struct {
		name    string
		fixture string
		stubs   func(*httpmock.Registry)
		nontty  bool
		wantOut string
		wantErr string
	}{
		{
			name: "no commits",
			stubs: func(reg *httpmock.Registry) {
				reg.Register(
					httpmock.GraphQL(`query PullRequestByNumber\b`),
					httpmock.StringResponse(`
						{ "data": { "repository": {
							"pullRequest": { "number": 123 }
						} } }
					`))
			},
			wantOut: "",
			wantErr: "no commit found on the pull request",
		},
		{
			name: "no checks",
			stubs: func(reg *httpmock.Registry) {
				reg.StubResponse(200, bytes.NewBufferString(`
				  { "data": { "repository": {
				  	"pullRequest": { "number": 123, "commits": { "nodes": [{"commit": {"oid": "abc"}}]}, "baseRefName": "master" }
				  } } }
				`))
			},
			wantOut: "",
			wantErr: "no checks reported on the 'master' branch",
		},
		{
			name:    "some failing",
			fixture: "./fixtures/someFailing.json",
			wantOut: "Some checks were not successful\n1 failing, 1 successful, and 1 pending checks\n\nX  sad tests   1m26s  sweet link\n✓  cool tests  1m26s  sweet link\n-  slow tests  1m26s  sweet link\n",
			wantErr: "SilentError",
		},
		{
			name:    "some pending",
			fixture: "./fixtures/somePending.json",
			wantOut: "Some checks are still pending\n0 failing, 2 successful, and 1 pending checks\n\n✓  cool tests  1m26s  sweet link\n✓  rad tests   1m26s  sweet link\n-  slow tests  1m26s  sweet link\n",
			wantErr: "SilentError",
		},
		{
			name:    "all passing",
			fixture: "./fixtures/allPassing.json",
			wantOut: "All checks were successful\n0 failing, 3 successful, and 0 pending checks\n\n✓  awesome tests  1m26s  sweet link\n✓  cool tests     1m26s  sweet link\n✓  rad tests      1m26s  sweet link\n",
			wantErr: "",
		},
		{
			name:    "with statuses",
			fixture: "./fixtures/withStatuses.json",
			wantOut: "Some checks were not successful\n1 failing, 2 successful, and 0 pending checks\n\nX  a status           sweet link\n✓  cool tests  1m26s  sweet link\n✓  rad tests   1m26s  sweet link\n",
			wantErr: "SilentError",
		},
		{
			name:   "no checks",
			nontty: true,
			stubs: func(reg *httpmock.Registry) {
				reg.StubResponse(200, bytes.NewBufferString(`
				  { "data": { "repository": {
						"pullRequest": { "number": 123, "commits": { "nodes": [{"commit": {"oid": "abc"}}]}, "baseRefName": "master" }
				  } } }
				`))
			},
			wantOut: "",
			wantErr: "no checks reported on the 'master' branch",
		},
		{
			name:    "some failing",
			nontty:  true,
			fixture: "./fixtures/someFailing.json",
			wantOut: "sad tests\tfail\t1m26s\tsweet link\ncool tests\tpass\t1m26s\tsweet link\nslow tests\tpending\t1m26s\tsweet link\n",
			wantErr: "SilentError",
		},
		{
			name:    "some pending",
			nontty:  true,
			fixture: "./fixtures/somePending.json",
			wantOut: "cool tests\tpass\t1m26s\tsweet link\nrad tests\tpass\t1m26s\tsweet link\nslow tests\tpending\t1m26s\tsweet link\n",
			wantErr: "SilentError",
		},
		{
			name:    "all passing",
			nontty:  true,
			fixture: "./fixtures/allPassing.json",
			wantOut: "awesome tests\tpass\t1m26s\tsweet link\ncool tests\tpass\t1m26s\tsweet link\nrad tests\tpass\t1m26s\tsweet link\n",
			wantErr: "",
		},
		{
			name:    "with statuses",
			nontty:  true,
			fixture: "./fixtures/withStatuses.json",
			wantOut: "a status\tfail\t0\tsweet link\ncool tests\tpass\t1m26s\tsweet link\nrad tests\tpass\t1m26s\tsweet link\n",
			wantErr: "SilentError",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			io, _, stdout, _ := iostreams.Test()
			io.SetStdoutTTY(!tt.nontty)

			opts := &ChecksOptions{
				IO: io,
				BaseRepo: func() (ghrepo.Interface, error) {
					return ghrepo.New("OWNER", "REPO"), nil
				},
				SelectorArg: "123",
			}

			reg := &httpmock.Registry{}
			defer reg.Verify(t)

			if tt.stubs != nil {
				tt.stubs(reg)
			} else if tt.fixture != "" {
				reg.Register(httpmock.GraphQL(`query PullRequestByNumber\b`), httpmock.FileResponse(tt.fixture))
			}

			opts.HttpClient = func() (*http.Client, error) {
				return &http.Client{Transport: reg}, nil
			}

			err := checksRun(opts)
			if err != nil {
				assert.Equal(t, tt.wantErr, err.Error())
			} else if tt.wantErr != "" {
				t.Errorf("expected %q, got nil error", tt.wantErr)
			}

			assert.Equal(t, tt.wantOut, stdout.String())
		})
	}
}

func TestChecksRun_web(t *testing.T) {
	tests := []struct {
		name       string
		isTTY      bool
		wantStderr string
		wantStdout string
	}{
		{
			name:       "tty",
			isTTY:      true,
			wantStderr: "Opening github.com/OWNER/REPO/pull/123/checks in your browser.\n",
			wantStdout: "",
		},
		{
			name:       "nontty",
			isTTY:      false,
			wantStderr: "",
			wantStdout: "",
		},
	}

	reg := &httpmock.Registry{}

	opts := &ChecksOptions{
		WebMode: true,
		HttpClient: func() (*http.Client, error) {
			return &http.Client{Transport: reg}, nil
		},
		BaseRepo: func() (ghrepo.Interface, error) {
			return ghrepo.New("OWNER", "REPO"), nil
		},
		SelectorArg: "123",
	}

	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {
			reg.Register(
				httpmock.GraphQL(`query PullRequestByNumber\b`), httpmock.FileResponse("./fixtures/allPassing.json"))

			io, _, stdout, stderr := iostreams.Test()
			io.SetStdoutTTY(tc.isTTY)
			io.SetStdinTTY(tc.isTTY)
			io.SetStderrTTY(tc.isTTY)

			opts.IO = io

			cs, teardown := test.InitCmdStubber()
			defer teardown()

			cs.Stub("") // browser open

			err := checksRun(opts)
			assert.NoError(t, err)
			assert.Equal(t, tc.wantStdout, stdout.String())
			assert.Equal(t, tc.wantStderr, stderr.String())
			reg.Verify(t)
		})
	}
}