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alfred.go
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alfred.go
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package Alfred
import (
"bytes"
"encoding/json"
"io/ioutil"
"os"
"path"
"github.com/pkg/errors"
"howett.net/plist"
)
const (
plistInfoFileName string = "info.plist"
defaultCacheDir string = "Library/Caches/com.runningwithcrayons.Alfred/Workflow Data"
defaultDataDir string = "Library/Application Support/Alfred/Workflow Data"
)
type Alfred struct {
id string
homeDir string
bundleDir string
bundleID string
dataDir string
cacheDir string
result *Res
}
func (al *Alfred) init(id string) (*Alfred, error) {
al.id = id
err := al.initHomeDir()
if err != nil {
return nil, errors.Wrap(err, sign("init homedir fail"))
}
err = al.initBundle()
if err != nil {
return nil, errors.Wrap(err, sign("init bundledir fail"))
}
err = al.initBundleID()
if err != nil {
return nil, errors.Wrap(err, sign("init bundle id fail"))
}
al.cacheDir = path.Join(al.homeDir, defaultCacheDir, al.bundleID)
al.dataDir = path.Join(al.homeDir, defaultDataDir, al.bundleID)
err = al.initCacheDir()
if err != nil {
return nil, errors.Wrap(err, sign("init cache dir fail"))
}
err = al.initDataDir()
if err != nil {
return nil, errors.Wrap(err, sign("init data dir fail"))
}
al.result = new(Res)
return al, nil
}
func (al *Alfred) initHomeDir() error {
home := os.Getenv("HOME")
if home == "" {
return errors.New(sign("find home dir fail"))
}
al.homeDir = home
return nil
}
func (al *Alfred) initBundle() error {
pwd, err := os.Getwd()
if err != nil {
return errors.Wrap(err, sign("get pwd fail"))
}
al.bundleDir = pwd
return nil
}
func (al *Alfred) initBundleID() error {
// Find info.plist
plistFile := path.Join(al.bundleDir, plistInfoFileName)
_, err := os.Stat(plistFile)
if err != nil {
return errors.Wrap(err, sign("find info.plist fail", plistFile))
}
// Read info.plist
buf, err := ioutil.ReadFile(plistFile)
if err != nil {
return errors.Wrap(err, sign("read info.plist fail", plistFile))
}
// Parse info.plist
var attrs map[string]interface{}
decoder := plist.NewDecoder(bytes.NewReader(buf))
err = decoder.Decode(&attrs)
if err != nil {
return errors.Wrap(err, sign("parse info.plist fail", plistFile))
}
v, ok := attrs["bundleid"]
if !ok {
return errors.Wrap(err, sign("find bundle id fail", plistFile))
}
al.bundleID = v.(string)
return nil
}
func (al *Alfred) initCacheDir() error {
if _, err := os.Stat(al.cacheDir); err != nil {
if err = os.MkdirAll(al.cacheDir, 0755); err != nil {
return errors.Wrap(err, sign("create cache dir fail", al.cacheDir))
}
}
return nil
}
func (al *Alfred) initDataDir() error {
if _, err := os.Stat(al.dataDir); err != nil {
if err = os.MkdirAll(al.dataDir, 0755); err != nil {
return errors.Wrap(err, sign("create data dir fail", al.dataDir))
}
}
return nil
}
func (al *Alfred) SetCacheDir(dir string) (*Alfred, error) {
al.cacheDir = dir
if err := al.initCacheDir(); err != nil {
return nil, err
}
return al, nil
}
func (al *Alfred) SetDataDir(dir string) (*Alfred, error) {
al.dataDir = dir
if err := al.initDataDir(); err != nil {
return nil, err
}
return al, nil
}
func (al *Alfred) GetID() string {
return al.id
}
func (al *Alfred) GetHomeDir() string {
return al.homeDir
}
func (al *Alfred) GetBundleDir() string {
return al.bundleDir
}
func (al *Alfred) GetBundleID() string {
return al.bundleID
}
func (al *Alfred) GetDataDir() string {
return al.dataDir
}
func (al *Alfred) GetCacheDir() string {
return al.cacheDir
}
func (al *Alfred) GetResult() *Res {
return al.result
}
func (al *Alfred) ResultAppend(it Item) *Alfred {
al.result.Append(it)
return al
}
func (al *Alfred) ResultSet(its []Item) *Alfred {
al.result.Set(its)
return al
}
func (al *Alfred) ResultToJson() ([]byte, error) {
return json.Marshal(al.result)
}
func (al *Alfred) ResultToIndentJson() ([]byte, error) {
return json.MarshalIndent(al.result, "", " ")
}
func (al *Alfred) Output() (int, error) {
if len(al.result.Items) == 0 {
al.ResultAppend(NewNoResultItem())
}
json, err := al.ResultToJson()
if err != nil {
return os.Stdout.WriteString("{\"items\":[{\"uid\":\"\",\"type\":\"default\",\"title\":\"We had a error\",\"subtitle\":\"" + err.Error() + "\",\"arg\":\"\",\"autocomplete\":\"\",\"valid\":false,\"icon\":{\"type\":\"fileicon\",\"path\":\"~/Desktop\"}}]}")
}
return os.Stdout.Write(json)
}
func NewAlfred(id string) (*Alfred, error) {
return new(Alfred).init(id)
}