91 lines
2.1 KiB
Go
91 lines
2.1 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 Sms interface {
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Init() error
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Send(number, msg string) error // Send sms
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ReadNew() ([]string, error) // Read new smses
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io.Closer
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}
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func New(logger *log.Logger, port at.Port) Sms {
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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("set to text format request: %w", err)
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}
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return fmt.Errorf("set SIM format: error response: %s", resp)
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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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d.port.Send(fmt.Sprintf(`AT+CMGS="%s"`, number)) // Because it will throw error
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resp, err := d.port.RawSend(fmt.Sprintf("%s\n\r", msg)) // Add additional \r\n because there is not supposed to be
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if err != nil {
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return fmt.Errorf("message request: %w", err)
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}
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d.logger.Println("SEND RESPONSE:", resp)
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resp, err = d.port.RawSend("\x1A")
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if err != nil {
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return fmt.Errorf("message request: %w", err)
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}
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d.logger.Println("SEND RESPONSE:", resp)
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errCode, err := GetError([]byte(resp))
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if err != nil {
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return fmt.Errorf("send sms failed and failed to get error: %w", err)
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}
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return fmt.Errorf("failed to send with SMS error: %d - %s", errCode, DecodeError(errCode))
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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=\"ALL\"")
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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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outMsgs := make([]string, 0)
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for _, s := range msgs {
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if len(s) >= len("+CMGL:") && s[:len("+CMGL:")] == "+CMGL:" {
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params := strings.Split(s[len("+CMGL:"):], ",")
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d.logger.Println("GET MSG:", params)
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} else {
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outMsgs = append(outMsgs, s)
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}
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}
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return outMsgs, 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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