1package launchpad
  2
  3import (
  4	"errors"
  5	"fmt"
  6	"net/http"
  7	"regexp"
  8
  9	"github.com/MichaelMure/git-bug/bridge/core"
 10	"github.com/MichaelMure/git-bug/cache"
 11	"github.com/MichaelMure/git-bug/input"
 12)
 13
 14var ErrBadProjectURL = errors.New("bad Launchpad project URL")
 15
 16func (Launchpad) ValidParams() map[string]interface{} {
 17	return map[string]interface{}{
 18		"URL":     nil,
 19		"Project": nil,
 20	}
 21}
 22
 23func (l *Launchpad) Configure(repo *cache.RepoCache, params core.BridgeParams) (core.Configuration, error) {
 24	var err error
 25	var project string
 26
 27	switch {
 28	case params.Project != "":
 29		project = params.Project
 30	case params.URL != "":
 31		// get project name from url
 32		project, err = splitURL(params.URL)
 33	default:
 34		// get project name from terminal prompt
 35		project, err = input.Prompt("Launchpad project name", "project name", input.Required)
 36	}
 37
 38	if err != nil {
 39		return nil, err
 40	}
 41
 42	// verify project
 43	ok, err := validateProject(project)
 44	if err != nil {
 45		return nil, err
 46	}
 47	if !ok {
 48		return nil, fmt.Errorf("project doesn't exist")
 49	}
 50
 51	conf := make(core.Configuration)
 52	conf[core.ConfigKeyTarget] = target
 53	conf[confKeyProject] = project
 54
 55	err = l.ValidateConfig(conf)
 56	if err != nil {
 57		return nil, err
 58	}
 59
 60	return conf, nil
 61}
 62
 63func (*Launchpad) ValidateConfig(conf core.Configuration) error {
 64	if v, ok := conf[core.ConfigKeyTarget]; !ok {
 65		return fmt.Errorf("missing %s key", core.ConfigKeyTarget)
 66	} else if v != target {
 67		return fmt.Errorf("unexpected target name: %v", v)
 68	}
 69	if _, ok := conf[confKeyProject]; !ok {
 70		return fmt.Errorf("missing %s key", confKeyProject)
 71	}
 72
 73	return nil
 74}
 75
 76func validateProject(project string) (bool, error) {
 77	url := fmt.Sprintf("%s/%s", apiRoot, project)
 78
 79	client := &http.Client{
 80		Timeout: defaultTimeout,
 81	}
 82
 83	resp, err := client.Get(url)
 84	if err != nil {
 85		return false, err
 86	}
 87
 88	return resp.StatusCode == http.StatusOK, nil
 89}
 90
 91// extract project name from url
 92func splitURL(url string) (string, error) {
 93	re, err := regexp.Compile(`launchpad\.net[\/:]([^\/]*[a-z]+)`)
 94	if err != nil {
 95		panic("regexp compile:" + err.Error())
 96	}
 97
 98	res := re.FindStringSubmatch(url)
 99	if res == nil {
100		return "", ErrBadProjectURL
101	}
102
103	return res[1], nil
104}