73 lines
1.5 KiB
Go
73 lines
1.5 KiB
Go
package sms
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import (
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"fmt"
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"io"
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"log"
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"strings"
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"github.com/CGSG-2021-AE4/modem-test/api/modem/at"
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)
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type dialer struct {
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logger *log.Logger
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port at.Port
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}
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type Dialer interface {
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Init() error
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Send(number, msg string) error
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ReadNew() ([]string, error)
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io.Closer
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}
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func New(logger *log.Logger, port at.Port) Dialer {
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return &dialer{
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logger: logger,
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port: port,
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}
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}
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func (d *dialer) Init() error {
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// Ensure serial port
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if !d.port.IsConnected() {
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return fmt.Errorf("serial port is not connected")
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}
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// Ensure text format
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if resp, err := d.port.Send("AT+CMGF=1"); err != nil || !resp.Check() {
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if err != nil {
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return fmt.Errorf("AT+CMGF=1 request: %w", err)
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}
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return fmt.Errorf("failed to set SMS format")
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}
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return nil
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}
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func (d *dialer) Send(number, msg string) error {
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cmd := fmt.Sprintf("AT+CMGS=\"%s\"\r%s%c", number, msg, 26)
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if resp, err := d.port.Send(cmd); err != nil || !resp.Check() {
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if err != nil {
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return fmt.Errorf("AT+CGMS= request: %w", err)
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}
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if errCode, err := GetError(resp.Bytes()); err != nil {
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return fmt.Errorf("failed to send with SMS error: %s", DecodeError(errCode))
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}
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return fmt.Errorf("failed to send SMS")
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}
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return nil
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}
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// Reads all new messages
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func (d *dialer) ReadNew() ([]string, error) {
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resp, err := d.port.Send("AT+CMGL")
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if err != nil {
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return nil, fmt.Errorf("AT+CMGL request: %w", err)
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}
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msgs := strings.Split(strings.Replace(string(resp), "\r", "", -1), "\n")
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return msgs, nil // TODO
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}
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func (d *dialer) Close() error {
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return nil
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}
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