package api

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"os"
	"testing"

	"gitlab.com/gitlab-org/cli/pkg/iostreams"

	gitlab "gitlab.com/gitlab-org/api/client-go"
	"gitlab.com/gitlab-org/cli/api"
	"gitlab.com/gitlab-org/cli/commands/cmdtest"
	"gitlab.com/gitlab-org/cli/commands/cmdutils"
	"gitlab.com/gitlab-org/cli/internal/config"
	"gitlab.com/gitlab-org/cli/internal/glrepo"
	"gitlab.com/gitlab-org/cli/pkg/git"

	"github.com/google/shlex"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func Test_NewCmdApi(t *testing.T) {
	f := cmdtest.StubFactory("")
	f.IO, _, _, _ = iostreams.Test()

	tests := []struct {
		name     string
		cli      string
		wants    ApiOptions
		wantsErr bool
	}{
		{
			name: "no flags",
			cli:  "graphql",
			wants: ApiOptions{
				Hostname:            "",
				RequestMethod:       http.MethodGet,
				RequestMethodPassed: false,
				RequestPath:         "graphql",
				RequestInputFile:    "",
				RawFields:           []string(nil),
				MagicFields:         []string(nil),
				RequestHeaders:      []string(nil),
				ShowResponseHeaders: false,
				Paginate:            false,
				Silent:              false,
			},
			wantsErr: false,
		},
		{
			name: "override method",
			cli:  "projects/octocat%2FSpoon-Knife -XDELETE",
			wants: ApiOptions{
				Hostname:            "",
				RequestMethod:       http.MethodDelete,
				RequestMethodPassed: true,
				RequestPath:         "projects/octocat%2FSpoon-Knife",
				RequestInputFile:    "",
				RawFields:           []string(nil),
				MagicFields:         []string(nil),
				RequestHeaders:      []string(nil),
				ShowResponseHeaders: false,
				Paginate:            false,
				Silent:              false,
			},
			wantsErr: false,
		},
		{
			name: "with fields",
			cli:  "graphql -f query=QUERY -F body=@file.txt",
			wants: ApiOptions{
				Hostname:            "",
				RequestMethod:       http.MethodGet,
				RequestMethodPassed: false,
				RequestPath:         "graphql",
				RequestInputFile:    "",
				RawFields:           []string{"query=QUERY"},
				MagicFields:         []string{"body=@file.txt"},
				RequestHeaders:      []string(nil),
				ShowResponseHeaders: false,
				Paginate:            false,
				Silent:              false,
			},
			wantsErr: false,
		},
		{
			name: "with headers",
			cli:  "user -H 'accept: text/plain' -i",
			wants: ApiOptions{
				Hostname:            "",
				RequestMethod:       http.MethodGet,
				RequestMethodPassed: false,
				RequestPath:         "user",
				RequestInputFile:    "",
				RawFields:           []string(nil),
				MagicFields:         []string(nil),
				RequestHeaders:      []string{"accept: text/plain"},
				ShowResponseHeaders: true,
				Paginate:            false,
				Silent:              false,
			},
			wantsErr: false,
		},
		{
			name: "with pagination",
			cli:  "projects/OWNER%2FREPO/issues --paginate",
			wants: ApiOptions{
				Hostname:            "",
				RequestMethod:       http.MethodGet,
				RequestMethodPassed: false,
				RequestPath:         "projects/OWNER%2FREPO/issues",
				RequestInputFile:    "",
				RawFields:           []string(nil),
				MagicFields:         []string(nil),
				RequestHeaders:      []string(nil),
				ShowResponseHeaders: false,
				Paginate:            true,
				Silent:              false,
			},
			wantsErr: false,
		},
		{
			name: "with silenced output",
			cli:  "projects/OWNER%2FREPO/issues --silent",
			wants: ApiOptions{
				Hostname:            "",
				RequestMethod:       http.MethodGet,
				RequestMethodPassed: false,
				RequestPath:         "projects/OWNER%2FREPO/issues",
				RequestInputFile:    "",
				RawFields:           []string(nil),
				MagicFields:         []string(nil),
				RequestHeaders:      []string(nil),
				ShowResponseHeaders: false,
				Paginate:            false,
				Silent:              true,
			},
			wantsErr: false,
		},
		{
			name:     "POST pagination",
			cli:      "-XPOST projects/OWNER%2FREPO/issues --paginate",
			wantsErr: true,
		},
		{
			name: "GraphQL pagination",
			cli:  "-XPOST graphql --paginate",
			wants: ApiOptions{
				Hostname:            "",
				RequestMethod:       http.MethodPost,
				RequestMethodPassed: true,
				RequestPath:         "graphql",
				RequestInputFile:    "",
				RawFields:           []string(nil),
				MagicFields:         []string(nil),
				RequestHeaders:      []string(nil),
				ShowResponseHeaders: false,
				Paginate:            true,
				Silent:              false,
			},
			wantsErr: false,
		},
		{
			name:     "input pagination",
			cli:      "--input projects/OWNER%2FREPO/issues --paginate",
			wantsErr: true,
		},
		{
			name: "with request body from file",
			cli:  "user --input myfile",
			wants: ApiOptions{
				Hostname:            "",
				RequestMethod:       http.MethodGet,
				RequestMethodPassed: false,
				RequestPath:         "user",
				RequestInputFile:    "myfile",
				RawFields:           []string(nil),
				MagicFields:         []string(nil),
				RequestHeaders:      []string(nil),
				ShowResponseHeaders: false,
				Paginate:            false,
				Silent:              false,
			},
			wantsErr: false,
		},
		{
			name:     "no arguments",
			cli:      "",
			wantsErr: true,
		},
		{
			name: "with hostname",
			cli:  "graphql --hostname tom.petty",
			wants: ApiOptions{
				Hostname:            "tom.petty",
				RequestMethod:       http.MethodGet,
				RequestMethodPassed: false,
				RequestPath:         "graphql",
				RequestInputFile:    "",
				RawFields:           []string(nil),
				MagicFields:         []string(nil),
				RequestHeaders:      []string(nil),
				ShowResponseHeaders: false,
				Paginate:            false,
				Silent:              false,
			},
			wantsErr: false,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			cmd := NewCmdApi(f, func(o *ApiOptions) error {
				assert.Equal(t, tt.wants.Hostname, o.Hostname)
				assert.Equal(t, tt.wants.RequestMethod, o.RequestMethod)
				assert.Equal(t, tt.wants.RequestMethodPassed, o.RequestMethodPassed)
				assert.Equal(t, tt.wants.RequestPath, o.RequestPath)
				assert.Equal(t, tt.wants.RequestInputFile, o.RequestInputFile)
				assert.Equal(t, tt.wants.RawFields, o.RawFields)
				assert.Equal(t, tt.wants.MagicFields, o.MagicFields)
				assert.Equal(t, tt.wants.RequestHeaders, o.RequestHeaders)
				assert.Equal(t, tt.wants.ShowResponseHeaders, o.ShowResponseHeaders)
				return nil
			})

			argv, err := shlex.Split(tt.cli)
			assert.NoError(t, err)
			cmd.SetArgs(argv)
			cmd.SetIn(&bytes.Buffer{})
			cmd.SetOut(&bytes.Buffer{})
			cmd.SetErr(&bytes.Buffer{})
			_, err = cmd.ExecuteC()
			if tt.wantsErr {
				assert.Error(t, err)
				return
			}
			assert.NoError(t, err)
		})
	}
}

func Test_apiRun(t *testing.T) {
	tests := []struct {
		name         string
		options      ApiOptions
		httpResponse *http.Response
		err          error
		stdout       string
		stderr       string
	}{
		{
			name: "success",
			httpResponse: &http.Response{
				StatusCode: http.StatusOK,
				Body:       io.NopCloser(bytes.NewBufferString(`bam!`)),
			},
			err:    nil,
			stdout: `bam!`,
			stderr: ``,
		},
		{
			name: "show response headers",
			options: ApiOptions{
				ShowResponseHeaders: true,
			},
			httpResponse: &http.Response{
				Proto:      "HTTP/1.1",
				Status:     "200 Okey-dokey",
				StatusCode: http.StatusOK,
				Body:       io.NopCloser(bytes.NewBufferString(`body`)),
				Header:     http.Header{"Content-Type": []string{"text/plain"}},
			},
			err:    nil,
			stdout: "HTTP/1.1 200 Okey-dokey\nContent-Type: text/plain\r\n\r\nbody",
			stderr: ``,
		},
		{
			name: "success 204",
			httpResponse: &http.Response{
				StatusCode: http.StatusNoContent,
				Body:       nil,
			},
			err:    nil,
			stdout: ``,
			stderr: ``,
		},
		{
			name: "REST error",
			httpResponse: &http.Response{
				StatusCode: http.StatusBadRequest,
				Body:       io.NopCloser(bytes.NewBufferString(`{"message": "THIS IS FINE"}`)),
				Header:     http.Header{"Content-Type": []string{"application/json; charset=utf-8"}},
			},
			err:    cmdutils.SilentError,
			stdout: `{"message": "THIS IS FINE"}`,
			stderr: "glab: THIS IS FINE (HTTP 400)\n",
		},
		{
			name: "REST string errors",
			httpResponse: &http.Response{
				StatusCode: http.StatusBadRequest,
				Body:       io.NopCloser(bytes.NewBufferString(`{"errors": ["ALSO", "FINE"]}`)),
				Header:     http.Header{"Content-Type": []string{"application/json; charset=utf-8"}},
			},
			err:    cmdutils.SilentError,
			stdout: `{"errors": ["ALSO", "FINE"]}`,
			stderr: "glab: ALSO\nFINE\n",
		},
		{
			name: "GraphQL error",
			options: ApiOptions{
				RequestPath: "graphql",
			},
			httpResponse: &http.Response{
				StatusCode: http.StatusOK,
				Body:       io.NopCloser(bytes.NewBufferString(`{"errors": [{"message":"AGAIN"}, {"message":"FINE"}]}`)),
				Header:     http.Header{"Content-Type": []string{"application/json; charset=utf-8"}},
			},
			err:    cmdutils.SilentError,
			stdout: `{"errors": [{"message":"AGAIN"}, {"message":"FINE"}]}`,
			stderr: "glab: AGAIN\nFINE\n",
		},
		{
			name: "failure",
			httpResponse: &http.Response{
				StatusCode: http.StatusBadGateway,
				Body:       io.NopCloser(bytes.NewBufferString(`gateway timeout`)),
			},
			err:    cmdutils.SilentError,
			stdout: `gateway timeout`,
			stderr: "glab: HTTP 502\n",
		},
		{
			name: "silent",
			options: ApiOptions{
				Silent: true,
			},
			httpResponse: &http.Response{
				StatusCode: http.StatusOK,
				Body:       io.NopCloser(bytes.NewBufferString(`body`)),
			},
			err:    nil,
			stdout: ``,
			stderr: ``,
		},
		{
			name: "show response headers even when silent",
			options: ApiOptions{
				ShowResponseHeaders: true,
				Silent:              true,
			},
			httpResponse: &http.Response{
				Proto:      "HTTP/1.1",
				Status:     "200 Okey-dokey",
				StatusCode: http.StatusOK,
				Body:       io.NopCloser(bytes.NewBufferString(`body`)),
				Header:     http.Header{"Content-Type": []string{"text/plain"}},
			},
			err:    nil,
			stdout: "HTTP/1.1 200 Okey-dokey\nContent-Type: text/plain\r\n\r\n",
			stderr: ``,
		},
	}

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

			tt.options.IO = ios
			tt.options.Config = config.NewBlankConfig()
			tt.options.HttpClient = func() (*gitlab.Client, error) {
				var tr roundTripFunc = func(req *http.Request) (*http.Response, error) {
					resp := tt.httpResponse
					resp.Request = req
					return resp, nil
				}
				a, err := api.TestClient(&http.Client{Transport: tr}, "OTOKEN", "gitlab.com", false)
				if err != nil {
					return nil, err
				}
				return a.Lab(), nil
			}

			err := apiRun(&tt.options)
			if err != tt.err {
				t.Errorf("expected error %v, got %v", tt.err, err)
			}

			if stdout.String() != tt.stdout {
				t.Errorf("expected output %q, got %q", tt.stdout, stdout.String())
			}
			if stderr.String() != tt.stderr {
				t.Errorf("expected error output %q, got %q", tt.stderr, stderr.String())
			}
		})
	}
}

func Test_apiRun_paginationREST(t *testing.T) {
	ios, _, stdout, stderr := iostreams.Test()

	requestCount := 0
	responses := []*http.Response{
		{
			StatusCode: http.StatusOK,
			Body:       io.NopCloser(bytes.NewBufferString(`{"page":1}`)),
			Header: http.Header{
				"Link": []string{`<https://gitlab.com/api/v4/projects/1227/issues?page=2>; rel="next", <https://gitlab.com/api/v4/projects/1227/issues?page=3>; rel="last"`},
			},
		},
		{
			StatusCode: http.StatusOK,
			Body:       io.NopCloser(bytes.NewBufferString(`{"page":2}`)),
			Header: http.Header{
				"Link": []string{`<https://gitlab.com/api/v4/projects/1227/issues?page=3>; rel="next", <https://gitlab.com/api/v4/projects/1227/issues?page=3>; rel="last"`},
			},
		},
		{
			StatusCode: http.StatusOK,
			Body:       io.NopCloser(bytes.NewBufferString(`{"page":3}`)),
			Header:     http.Header{},
		},
	}

	options := ApiOptions{
		IO:     ios,
		Config: config.NewBlankConfig(),
		HttpClient: func() (*gitlab.Client, error) {
			var tr roundTripFunc = func(req *http.Request) (*http.Response, error) {
				resp := responses[requestCount]
				resp.Request = req
				requestCount++
				return resp, nil
			}
			a, err := api.TestClient(&http.Client{Transport: tr}, "OTOKEN", "gitlab.com", false)
			if err != nil {
				return nil, err
			}
			return a.Lab(), nil
		},

		RequestPath: "issues",
		Paginate:    true,
	}

	err := apiRun(&options)
	assert.NoError(t, err)

	assert.Equal(t, `{"page":1}{"page":2}{"page":3}`, stdout.String(), "stdout")
	assert.Equal(t, "", stderr.String(), "stderr")

	assert.Equal(t, "https://gitlab.com/api/v4/issues?per_page=100", responses[0].Request.URL.String())
	assert.Equal(t, "https://gitlab.com/api/v4/projects/1227/issues?page=2", responses[1].Request.URL.String())
	assert.Equal(t, "https://gitlab.com/api/v4/projects/1227/issues?page=3", responses[2].Request.URL.String())
}

func Test_apiRun_paginationGraphQL(t *testing.T) {
	ios, _, stdout, stderr := iostreams.Test()

	requestCount := 0
	responses := []*http.Response{
		{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{`application/json`}},
			Body: io.NopCloser(bytes.NewBufferString(`{
				"data": {
					"nodes": ["page one"],
					"pageInfo": {
						"endCursor": "PAGE1_END",
						"hasNextPage": true
					}
				}
			}`)),
		},
		{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{`application/json`}},
			Body: io.NopCloser(bytes.NewBufferString(`{
				"data": {
					"nodes": ["page two"],
					"pageInfo": {
						"endCursor": "PAGE2_END",
						"hasNextPage": false
					}
				}
			}`)),
		},
	}

	options := ApiOptions{
		IO:     ios,
		Config: config.NewBlankConfig(),
		HttpClient: func() (*gitlab.Client, error) {
			var tr roundTripFunc = func(req *http.Request) (*http.Response, error) {
				resp := responses[requestCount]
				resp.Request = req
				requestCount++
				return resp, nil
			}
			a, err := api.TestClient(&http.Client{Transport: tr}, "OTOKEN", "gitlab.com", false)
			if err != nil {
				return nil, err
			}
			return a.Lab(), nil
		},

		RequestMethod: http.MethodPost,
		RequestPath:   "graphql",
		Paginate:      true,
	}

	err := apiRun(&options)
	require.NoError(t, err)

	assert.Contains(t, stdout.String(), `"page one"`)
	assert.Contains(t, stdout.String(), `"page two"`)
	assert.Equal(t, "", stderr.String(), "stderr")

	var requestData struct {
		Variables map[string]interface{}
	}

	bb, err := io.ReadAll(responses[0].Request.Body)
	require.NoError(t, err)
	err = json.Unmarshal(bb, &requestData)
	require.NoError(t, err)
	_, hasCursor := requestData.Variables["endCursor"].(string)
	assert.Equal(t, false, hasCursor)

	bb, err = io.ReadAll(responses[1].Request.Body)
	require.NoError(t, err)
	err = json.Unmarshal(bb, &requestData)
	require.NoError(t, err)
	endCursor, hasCursor := requestData.Variables["endCursor"].(string)
	assert.Equal(t, true, hasCursor)
	assert.Equal(t, "PAGE1_END", endCursor)
}

func Test_apiRun_inputFile(t *testing.T) {
	tests := []struct {
		name          string
		inputFile     string
		inputContents []byte

		contentLength    int64
		expectedContents []byte
	}{
		{
			name:          "stdin",
			inputFile:     "-",
			inputContents: []byte("I WORK OUT"),
			contentLength: 0,
		},
		{
			name:          "from file",
			inputFile:     "gitlab-test-file",
			inputContents: []byte("I WORK OUT"),
			contentLength: 10,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			ios, stdin, _, _ := iostreams.Test()
			resp := &http.Response{StatusCode: http.StatusNoContent}

			inputFile := tt.inputFile
			if tt.inputFile == "-" {
				_, _ = stdin.Write(tt.inputContents)
			} else {
				f, err := os.CreateTemp("", tt.inputFile)
				if err != nil {
					t.Fatal(err)
				}
				_, _ = f.Write(tt.inputContents)
				f.Close()
				t.Cleanup(func() { os.Remove(f.Name()) })
				inputFile = f.Name()
			}

			var bodyBytes []byte
			options := ApiOptions{
				RequestPath:      "hello",
				RequestInputFile: inputFile,
				RawFields:        []string{"a=b", "c=d"},

				IO:     ios,
				Config: config.NewBlankConfig(),
				HttpClient: func() (*gitlab.Client, error) {
					var tr roundTripFunc = func(req *http.Request) (*http.Response, error) {
						var err error
						if bodyBytes, err = io.ReadAll(req.Body); err != nil {
							return nil, err
						}
						resp.Request = req
						return resp, nil
					}
					a, err := api.TestClient(&http.Client{Transport: tr}, "OTOKEN", "gitlab.com", false)
					if err != nil {
						return nil, err
					}
					return a.Lab(), nil
				},
			}

			err := apiRun(&options)
			if err != nil {
				t.Errorf("got error %v", err)
			}

			assert.Equal(t, http.MethodPost, resp.Request.Method)
			assert.Equal(t, "/api/v4/hello?a=b&c=d", resp.Request.URL.RequestURI())
			assert.Equal(t, tt.contentLength, resp.Request.ContentLength)
			assert.Equal(t, "", resp.Request.Header.Get("Content-Type"))
			assert.Equal(t, tt.inputContents, bodyBytes)
		})
	}
}

func Test_parseFields(t *testing.T) {
	ios, stdin, _, _ := iostreams.Test()
	fmt.Fprint(stdin, "pasted contents")

	opts := ApiOptions{
		IO: ios,
		RawFields: []string{
			"robot=Hubot",
			"destroyer=false",
			"helper=true",
			"location=@work",
		},
		MagicFields: []string{
			"input=@-",
			"enabled=true",
			"victories=123",
		},
	}

	params, err := parseFields(&opts)
	if err != nil {
		t.Fatalf("parseFields error: %v", err)
	}

	expect := map[string]interface{}{
		"robot":     "Hubot",
		"destroyer": "false",
		"helper":    "true",
		"location":  "@work",
		"input":     []byte("pasted contents"),
		"enabled":   true,
		"victories": 123,
	}
	assert.Equal(t, expect, params)
}

func Test_magicFieldValue(t *testing.T) {
	f, err := os.CreateTemp("", "gitlab-test")
	if err != nil {
		t.Fatal(err)
	}
	fmt.Fprint(f, "file contents")
	f.Close()
	t.Cleanup(func() { os.Remove(f.Name()) })

	ios, _, _, _ := iostreams.Test()

	type args struct {
		v    string
		opts *ApiOptions
	}
	tests := []struct {
		name    string
		args    args
		want    interface{}
		wantErr bool
	}{
		{
			name:    "string",
			args:    args{v: "hello"},
			want:    "hello",
			wantErr: false,
		},
		{
			name:    "bool true",
			args:    args{v: "true"},
			want:    true,
			wantErr: false,
		},
		{
			name:    "bool false",
			args:    args{v: "false"},
			want:    false,
			wantErr: false,
		},
		{
			name:    "null",
			args:    args{v: "null"},
			want:    nil,
			wantErr: false,
		},
		{
			name: "placeholder",
			args: args{
				v: ":namespace",
				opts: &ApiOptions{
					IO: ios,
					BaseRepo: func() (glrepo.Interface, error) {
						return glrepo.New("gitlab-com", "www-gitlab-com"), nil
					},
				},
			},
			want:    "gitlab-com",
			wantErr: false,
		},
		{
			name: "file",
			args: args{
				v:    "@" + f.Name(),
				opts: &ApiOptions{IO: ios},
			},
			want:    []byte("file contents"),
			wantErr: false,
		},
		{
			name: "file error",
			args: args{
				v:    "@",
				opts: &ApiOptions{IO: ios},
			},
			want:    nil,
			wantErr: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := magicFieldValue(tt.args.v, tt.args.opts)
			if (err != nil) != tt.wantErr {
				t.Errorf("magicFieldValue() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if tt.wantErr {
				return
			}
			assert.Equal(t, tt.want, got)
		})
	}
}

func Test_openUserFile(t *testing.T) {
	f, err := os.CreateTemp("", "gitlab-test")
	if err != nil {
		t.Fatal(err)
	}
	fmt.Fprint(f, "file contents")
	f.Close()
	t.Cleanup(func() { os.Remove(f.Name()) })

	file, length, err := openUserFile(f.Name(), nil)
	if err != nil {
		t.Fatal(err)
	}
	defer file.Close()

	fb, err := io.ReadAll(file)
	if err != nil {
		t.Fatal(err)
	}

	assert.Equal(t, int64(13), length)
	assert.Equal(t, "file contents", string(fb))
}

func Test_fillPlaceholders(t *testing.T) {
	type args struct {
		value string
		opts  *ApiOptions
	}
	tests := []struct {
		name    string
		args    args
		want    string
		wantErr bool
	}{
		{
			name: "no changes",
			args: args{
				value: "projects/namespace%2Frepo/releases",
				opts: &ApiOptions{
					BaseRepo: nil,
				},
			},
			want:    "projects/namespace%2Frepo/releases",
			wantErr: false,
		},
		{
			name: "has substitutes",
			args: args{
				value: "projects/:namespace%2F:repo/releases",
				opts: &ApiOptions{
					BaseRepo: func() (glrepo.Interface, error) {
						return glrepo.New("gitlab-com", "www-gitlab-com"), nil
					},
				},
			},
			want:    "projects/gitlab-com%2Fwww-gitlab-com/releases",
			wantErr: false,
		},
		{
			name: "has branch placeholder",
			args: args{
				value: "projects/glab-cli%2Ftest/branches/:branch/.../.../",
				opts: &ApiOptions{
					BaseRepo: func() (glrepo.Interface, error) {
						return glrepo.New("glab-cli", "test"), nil
					},
					Branch: func() (string, error) {
						return "master", nil
					},
				},
			},
			want:    "projects/glab-cli%2Ftest/branches/master/.../.../",
			wantErr: false,
		},
		{
			name: "has branch placeholder and git is in detached head",
			args: args{
				value: "projects/:fullpath/branches/:branch",
				opts: &ApiOptions{
					BaseRepo: func() (glrepo.Interface, error) {
						return glrepo.New("glab-cli", "test"), nil
					},
					Branch: func() (string, error) {
						return "", git.ErrNotOnAnyBranch
					},
				},
			},
			want:    "projects/:fullpath/branches/:branch",
			wantErr: true,
		},
		{
			name: "no greedy substitutes",
			args: args{
				value: ":namespaces/:repository",
				opts: &ApiOptions{
					BaseRepo: nil,
				},
			},
			want:    ":namespaces/:repository",
			wantErr: false,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := fillPlaceholders(tt.args.value, tt.args.opts)
			if (err != nil) != tt.wantErr {
				t.Errorf("fillPlaceholders() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if got != tt.want {
				t.Errorf("fillPlaceholders() got = %v, want %v", got, tt.want)
			}
		})
	}
}