package list

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

	"github.com/MakeNowJust/heredoc"
	"github.com/cli/cli/v2/internal/browser"
	"github.com/cli/cli/v2/internal/ghrepo"
	"github.com/cli/cli/v2/pkg/cmd/ruleset/shared"
	"github.com/cli/cli/v2/pkg/cmdutil"
	"github.com/cli/cli/v2/pkg/httpmock"
	"github.com/cli/cli/v2/pkg/iostreams"
	"github.com/google/shlex"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func Test_NewCmdList(t *testing.T) {
	tests := []struct {
		name    string
		args    string
		isTTY   bool
		want    ListOptions
		wantErr string
	}{
		{
			name:  "no arguments",
			args:  "",
			isTTY: true,
			want: ListOptions{
				Limit:          30,
				IncludeParents: true,
				WebMode:        false,
				Organization:   "",
			},
		},
		{
			name:  "limit",
			args:  "--limit 1",
			isTTY: true,
			want: ListOptions{
				Limit:          1,
				IncludeParents: true,
				WebMode:        false,
				Organization:   "",
			},
		},
		{
			name:  "include parents",
			args:  "--parents=false",
			isTTY: true,
			want: ListOptions{
				Limit:          30,
				IncludeParents: false,
				WebMode:        false,
				Organization:   "",
			},
		},
		{
			name:  "org",
			args:  "--org \"my-org\"",
			isTTY: true,
			want: ListOptions{
				Limit:          30,
				IncludeParents: true,
				WebMode:        false,
				Organization:   "my-org",
			},
		},
		{
			name:  "web mode",
			args:  "--web",
			isTTY: true,
			want: ListOptions{
				Limit:          30,
				IncludeParents: true,
				WebMode:        true,
				Organization:   "",
			},
		},
		{
			name:    "invalid limit",
			args:    "--limit 0",
			isTTY:   true,
			wantErr: "invalid limit: 0",
		},
		{
			name:    "repo and org specified",
			args:    "--org \"my-org\" -R \"owner/repo\"",
			isTTY:   true,
			wantErr: "only one of --repo and --org may be specified",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			ios, _, _, _ := iostreams.Test()
			ios.SetStdoutTTY(tt.isTTY)
			ios.SetStdinTTY(tt.isTTY)
			ios.SetStderrTTY(tt.isTTY)

			f := &cmdutil.Factory{
				IOStreams: ios,
			}

			var opts *ListOptions
			cmd := NewCmdList(f, func(o *ListOptions) error {
				opts = o
				return nil
			})
			cmd.PersistentFlags().StringP("repo", "R", "", "")

			argv, err := shlex.Split(tt.args)
			require.NoError(t, err)
			cmd.SetArgs(argv)

			cmd.SetIn(&bytes.Buffer{})
			cmd.SetOut(io.Discard)
			cmd.SetErr(io.Discard)

			_, err = cmd.ExecuteC()
			if tt.wantErr != "" {
				require.EqualError(t, err, tt.wantErr)
				return
			} else {
				require.NoError(t, err)
			}

			assert.Equal(t, tt.want.Limit, opts.Limit)
			assert.Equal(t, tt.want.WebMode, opts.WebMode)
			assert.Equal(t, tt.want.Organization, opts.Organization)
		})
	}
}

func Test_listRun(t *testing.T) {
	tests := []struct {
		name       string
		isTTY      bool
		opts       ListOptions
		httpStubs  func(*httpmock.Registry)
		wantErr    string
		wantStdout string
		wantStderr string
		wantBrowse string
	}{
		{
			name:  "list repo rulesets",
			isTTY: true,
			wantStdout: heredoc.Doc(`

				Showing 3 of 3 rulesets in OWNER/REPO

				ID  NAME    SOURCE             STATUS    RULES
				4   test    OWNER/REPO (repo)  evaluate  1
				42  asdf    OWNER/REPO (repo)  active    2
				77  foobar  Org-Name (org)     disabled  4
			`),
			httpStubs: func(reg *httpmock.Registry) {
				reg.Register(
					httpmock.GraphQL(`query RepoRulesetList\b`),
					httpmock.FileResponse("./fixtures/rulesetList.json"),
				)
			},
			wantStderr: "",
			wantBrowse: "",
		},
		{
			name:  "list org rulesets",
			isTTY: true,
			opts: ListOptions{
				IncludeParents: true,
				Organization:   "my-org",
			},
			wantStdout: heredoc.Doc(`

				Showing 3 of 3 rulesets in my-org and its parents

				ID  NAME    SOURCE             STATUS    RULES
				4   test    OWNER/REPO (repo)  evaluate  1
				42  asdf    OWNER/REPO (repo)  active    2
				77  foobar  Org-Name (org)     disabled  4
			`),
			httpStubs: func(reg *httpmock.Registry) {
				reg.Register(
					httpmock.GraphQL(`query OrgRulesetList\b`),
					httpmock.FileResponse("./fixtures/rulesetList.json"),
				)
			},
			wantStderr: "",
			wantBrowse: "",
		},
		{
			name:  "list repo rulesets, no rulesets",
			isTTY: true,
			opts: ListOptions{
				IncludeParents: true,
			},
			wantStdout: "",
			httpStubs: func(reg *httpmock.Registry) {
				reg.Register(
					httpmock.GraphQL(`query RepoRulesetList\b`),
					httpmock.JSONResponse(shared.RulesetList{
						TotalCount: 0,
						Rulesets:   []shared.RulesetGraphQL{},
					}),
				)
			},
			wantErr:    "no rulesets found in OWNER/REPO or its parents",
			wantStderr: "",
			wantBrowse: "",
		},
		{
			name:  "list org rulesets, no rulesets",
			isTTY: true,
			opts: ListOptions{
				Organization: "my-org",
			},
			wantStdout: "",
			httpStubs: func(reg *httpmock.Registry) {
				reg.Register(
					httpmock.GraphQL(`query OrgRulesetList\b`),
					httpmock.JSONResponse(shared.RulesetList{
						TotalCount: 0,
						Rulesets:   []shared.RulesetGraphQL{},
					}),
				)
			},
			wantErr:    "no rulesets found in my-org",
			wantBrowse: "",
		},
		{
			name:  "machine-readable",
			isTTY: false,
			wantStdout: heredoc.Doc(`
				4	test	OWNER/REPO (repo)	evaluate	1
				42	asdf	OWNER/REPO (repo)	active	2
				77	foobar	Org-Name (org)	disabled	4
			`),
			httpStubs: func(reg *httpmock.Registry) {
				reg.Register(
					httpmock.GraphQL(`query RepoRulesetList\b`),
					httpmock.FileResponse("./fixtures/rulesetList.json"),
				)
			},
			wantStderr: "",
			wantBrowse: "",
		},
		{
			name:  "repo web mode, TTY",
			isTTY: true,
			opts: ListOptions{
				WebMode: true,
			},
			wantStdout: "Opening github.com/OWNER/REPO/rules in your browser.\n",
			wantStderr: "",
			wantBrowse: "https://github.com/OWNER/REPO/rules",
		},
		{
			name:  "org web mode, TTY",
			isTTY: true,
			opts: ListOptions{
				WebMode:      true,
				Organization: "my-org",
			},
			wantStdout: "Opening github.com/organizations/my-org/settings/rules in your browser.\n",
			wantStderr: "",
			wantBrowse: "https://github.com/organizations/my-org/settings/rules",
		},
		{
			name:  "repo web mode, non-TTY",
			isTTY: false,
			opts: ListOptions{
				WebMode: true,
			},
			wantStdout: "",
			wantStderr: "",
			wantBrowse: "https://github.com/OWNER/REPO/rules",
		},
		{
			name:  "org web mode, non-TTY",
			isTTY: false,
			opts: ListOptions{
				WebMode:      true,
				Organization: "my-org",
			},
			wantStdout: "",
			wantStderr: "",
			wantBrowse: "https://github.com/organizations/my-org/settings/rules",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			ios, _, stdout, stderr := iostreams.Test()
			ios.SetStdoutTTY(tt.isTTY)
			ios.SetStdinTTY(tt.isTTY)
			ios.SetStderrTTY(tt.isTTY)

			reg := &httpmock.Registry{}
			defer reg.Verify(t)
			if tt.httpStubs != nil {
				tt.httpStubs(reg)
			}

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

			// only set this if org is not set, because the repo isn't needed if --org is provided and
			// leaving it undefined will catch potential errors
			if tt.opts.Organization == "" {
				tt.opts.BaseRepo = func() (ghrepo.Interface, error) {
					return ghrepo.FromFullName("OWNER/REPO")
				}
			}

			browser := &browser.Stub{}
			tt.opts.Browser = browser

			err := listRun(&tt.opts)

			if tt.wantErr != "" {
				require.EqualError(t, err, tt.wantErr)
				return
			} else {
				require.NoError(t, err)
			}

			if tt.wantBrowse != "" {
				browser.Verify(t, tt.wantBrowse)
			}

			assert.Equal(t, tt.wantStdout, stdout.String())
			assert.Equal(t, tt.wantStderr, stderr.String())
		})
	}
}