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parser.go
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/
parser.go
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package layout
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"text/template"
"github.com/goccy/go-yaml"
tele "gopkg.in/telebot.v3"
)
type Settings struct {
URL string
Token string
Updates int
LocalesDir string `yaml:"locales_dir"`
TokenEnv string `yaml:"token_env"`
ParseMode string `yaml:"parse_mode"`
Webhook *tele.Webhook `yaml:"webhook"`
LongPoller *tele.LongPoller `yaml:"long_poller"`
}
func (lt *Layout) UnmarshalYAML(data []byte) error {
var aux struct {
Settings *Settings
Config map[string]interface{}
Commands map[string]string
Buttons yaml.MapSlice
Markups yaml.MapSlice
Results yaml.MapSlice
Locales map[string]map[string]string
}
if err := yaml.Unmarshal(data, &aux); err != nil {
return err
}
lt.Config = &Config{v: aux.Config}
lt.commands = aux.Commands
if pref := aux.Settings; pref != nil {
lt.pref = &tele.Settings{
URL: pref.URL,
Token: pref.Token,
Updates: pref.Updates,
ParseMode: pref.ParseMode,
}
if pref.TokenEnv != "" {
lt.pref.Token = os.Getenv(pref.TokenEnv)
}
if pref.Webhook != nil {
lt.pref.Poller = pref.Webhook
} else if pref.LongPoller != nil {
lt.pref.Poller = pref.LongPoller
}
}
lt.buttons = make(map[string]Button, len(aux.Buttons))
for _, item := range aux.Buttons {
k, v := item.Key.(string), item.Value
// 1. Shortened reply button
if v, ok := v.(string); ok {
lt.buttons[k] = Button{Text: v}
continue
}
// 2. Extended reply or inline button
data, err := yaml.MarshalWithOptions(v, yaml.JSON())
if err != nil {
return err
}
var btn struct {
Button `yaml:",inline"`
Data interface{} `yaml:"data"`
}
if err := yaml.Unmarshal(data, &btn); err != nil {
return err
}
if btn.Data != nil {
if a, ok := btn.Data.([]interface{}); ok {
s := make([]string, len(a))
for i, v := range a {
s[i] = fmt.Sprint(v)
}
btn.Button.Data = strings.Join(s, "|")
} else if s, ok := btn.Data.(string); ok {
btn.Button.Data = s
} else {
return fmt.Errorf("telebot/layout: invalid callback_data for %s button", k)
}
}
lt.buttons[k] = btn.Button
}
lt.markups = make(map[string]Markup, len(aux.Markups))
for _, item := range aux.Markups {
k, v := item.Key.(string), item.Value
data, err := yaml.Marshal(v)
if err != nil {
return err
}
var shortenedMarkup [][]string
if yaml.Unmarshal(data, &shortenedMarkup) == nil {
// 1. Shortened reply or inline markup
kb := make([][]Button, len(shortenedMarkup))
for i, btns := range shortenedMarkup {
row := make([]Button, len(btns))
for j, btn := range btns {
b, ok := lt.buttons[btn]
if !ok {
return fmt.Errorf("telebot/layout: no %s button for %s markup", btn, k)
}
row[j] = b
}
kb[i] = row
}
data, err := yaml.Marshal(kb)
if err != nil {
return err
}
tmpl, err := template.New(k).Funcs(lt.funcs).Parse(string(data))
if err != nil {
return err
}
markup := Markup{keyboard: tmpl}
for _, row := range kb {
for _, btn := range row {
inline := btn.URL != "" ||
btn.Unique != "" ||
btn.InlineQuery != "" ||
btn.InlineQueryChat != ""
if markup.inline == nil {
markup.inline = &inline
} else if *markup.inline != inline {
return fmt.Errorf("telebot/layout: mixed reply and inline buttons in %s markup", k)
}
}
}
lt.markups[k] = markup
} else {
// 2. Extended reply markup
var markup struct {
Markup `yaml:",inline"`
Keyboard [][]string `yaml:"keyboard"`
}
if err := yaml.Unmarshal(data, &markup); err != nil {
return err
}
kb := make([][]tele.ReplyButton, len(markup.Keyboard))
for i, btns := range markup.Keyboard {
row := make([]tele.ReplyButton, len(btns))
for j, btn := range btns {
row[j] = *lt.buttons[btn].Reply()
}
kb[i] = row
}
data, err := yaml.Marshal(kb)
if err != nil {
return err
}
tmpl, err := template.New(k).Funcs(lt.funcs).Parse(string(data))
if err != nil {
return err
}
markup.inline = new(bool)
markup.Markup.keyboard = tmpl
lt.markups[k] = markup.Markup
}
}
lt.results = make(map[string]Result, len(aux.Results))
for _, item := range aux.Results {
k, v := item.Key.(string), item.Value
data, err := yaml.Marshal(v)
if err != nil {
return err
}
tmpl, err := template.New(k).Funcs(lt.funcs).Parse(string(data))
if err != nil {
return err
}
var result Result
if err := yaml.Unmarshal(data, &result); err != nil {
return err
}
result.result = tmpl
lt.results[k] = result
}
if aux.Locales == nil {
if aux.Settings.LocalesDir == "" {
aux.Settings.LocalesDir = "locales"
}
return lt.parseLocales(aux.Settings.LocalesDir)
}
return nil
}
func (lt *Layout) parseLocales(dir string) error {
lt.locales = make(map[string]*template.Template)
return filepath.Walk(dir, func(path string, fi os.FileInfo, _ error) error {
if fi == nil || fi.IsDir() {
return nil
}
data, err := ioutil.ReadFile(path)
if err != nil {
return err
}
var texts map[string]string
if err := yaml.Unmarshal(data, &texts); err != nil {
return err
}
name := fi.Name()
name = strings.TrimSuffix(name, filepath.Ext(name))
tmpl := template.New(name).Funcs(lt.funcs)
for key, text := range texts {
_, err = tmpl.New(key).Parse(strings.Trim(text, "\r\n"))
if err != nil {
return err
}
}
lt.locales[name] = tmpl
return nil
})
}