generated from VLADIMIR/template
75 lines
2.6 KiB
Go
75 lines
2.6 KiB
Go
package team_service
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import (
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"bytes"
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"encoding/json"
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"errors"
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"net/mail"
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"strconv"
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"strings"
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"unicode/utf8"
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)
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var (
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ErrInvalidCaptainEmail = errors.New("укажите корректную почту капитана")
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ErrInvalidParticipantsCount = errors.New("укажите от 1 до 8 участников")
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ErrTeamNotFound = errors.New("команда не найдена")
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ErrInvalidRegistration = errors.New("укажите название команды (до 255 символов), почту капитана и положительное количество участников")
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ErrRegistrationClosed = errors.New("игра не найдена или регистрация уже закрыта")
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)
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// Registration contains data required to register a team.
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type Registration struct {
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Name string `json:"name"`
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Email string `json:"email"`
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ParticipantsCount int32 `json:"participantsCount"`
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}
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// UnmarshalJSON decodes and normalizes registration data.
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func (r *Registration) UnmarshalJSON(data []byte) error {
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var payload struct {
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Name string `json:"name"`
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Email string `json:"email"`
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ParticipantsCount json.RawMessage `json:"participantsCount"`
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}
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decoder := json.NewDecoder(bytes.NewReader(data))
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decoder.DisallowUnknownFields()
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if err := decoder.Decode(&payload); err != nil {
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return err
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}
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r.Name = payload.Name
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r.Email = payload.Email
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if len(payload.ParticipantsCount) == 0 {
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return nil
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}
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if err := json.Unmarshal(payload.ParticipantsCount, &r.ParticipantsCount); err == nil {
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return nil
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}
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var value string
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if err := json.Unmarshal(payload.ParticipantsCount, &value); err != nil {
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return errors.New(`поле "participantsCount" должно быть целым числом или строкой с целым числом`)
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}
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count, err := strconv.ParseInt(value, 10, 32)
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if err != nil {
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return errors.New(`поле "participantsCount" должно быть целым числом или строкой с целым числом`)
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}
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r.ParticipantsCount = int32(count)
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return nil
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}
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func validCaptainEmail(email string) bool {
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address, err := mail.ParseAddress(email)
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return err == nil && address.Address == email && len(email) <= 254
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}
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// Validate checks registration data.
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func (r *Registration) Validate() error {
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r.Name = strings.TrimSpace(r.Name)
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r.Email = strings.TrimSpace(r.Email)
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if r.Name == "" || !utf8.ValidString(r.Name) || strings.ContainsRune(r.Name, 0) || utf8.RuneCountInString(r.Name) > 255 ||
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!validCaptainEmail(r.Email) || r.ParticipantsCount <= 0 {
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return ErrInvalidRegistration
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}
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return nil
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}
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