1package launchpad
  2
  3import (
  4	"bufio"
  5	"fmt"
  6	"net/http"
  7	"os"
  8	"regexp"
  9	"strings"
 10	"time"
 11
 12	"github.com/MichaelMure/git-bug/bridge/core"
 13	"github.com/MichaelMure/git-bug/repository"
 14)
 15
 16const (
 17	keyProject     = "project"
 18	defaultTimeout = 60 * time.Second
 19)
 20
 21var (
 22	rxLaunchpadURL = regexp.MustCompile(`launchpad\.net[\/:]([^\/]*[a-z]+)`)
 23)
 24
 25func (*Launchpad) Configure(repo repository.RepoCommon, params core.BridgeParams) (core.Configuration, error) {
 26	if params.Token != "" {
 27		fmt.Println("warning: --token is ineffective for a Launchpad bridge")
 28	}
 29	if params.Owner != "" {
 30		fmt.Println("warning: --owner is ineffective for a Launchpad bridge")
 31	}
 32
 33	conf := make(core.Configuration)
 34	var err error
 35	var project string
 36
 37	if params.Project != "" {
 38		project = params.Project
 39
 40	} else if params.URL != "" {
 41		// get project name from url
 42		_, project, err = splitURL(params.URL)
 43		if err != nil {
 44			return nil, err
 45		}
 46
 47	} else {
 48		// get project name from terminal prompt
 49		project, err = promptProjectName()
 50		if err != nil {
 51			return nil, err
 52		}
 53	}
 54
 55	// verify project
 56	ok, err := validateProject(project)
 57	if err != nil {
 58		return nil, err
 59	}
 60	if !ok {
 61		return nil, fmt.Errorf("project doesn't exist")
 62	}
 63
 64	conf[keyProject] = project
 65	return conf, nil
 66}
 67
 68func (*Launchpad) ValidateConfig(conf core.Configuration) error {
 69	if _, ok := conf[keyProject]; !ok {
 70		return fmt.Errorf("missing %s key", keyProject)
 71	}
 72
 73	return nil
 74}
 75
 76func promptProjectName() (string, error) {
 77	for {
 78		fmt.Print("Launchpad project name: ")
 79
 80		line, err := bufio.NewReader(os.Stdin).ReadString('\n')
 81		if err != nil {
 82			return "", err
 83		}
 84
 85		line = strings.TrimRight(line, "\n")
 86
 87		if line == "" {
 88			fmt.Println("Project name is empty")
 89			continue
 90		}
 91
 92		return line, nil
 93	}
 94}
 95
 96func validateProject(project string) (bool, error) {
 97	url := fmt.Sprintf("%s/%s", apiRoot, project)
 98
 99	client := &http.Client{
100		Timeout: defaultTimeout,
101	}
102
103	resp, err := client.Get(url)
104	if err != nil {
105		return false, err
106	}
107
108	return resp.StatusCode == http.StatusOK, nil
109}
110
111func splitURL(url string) (string, string, error) {
112	res := rxLaunchpadURL.FindStringSubmatch(url)
113	if res == nil {
114		return "", "", fmt.Errorf("bad Launchpad project url")
115	}
116
117	return res[0], res[1], nil
118}