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model.go
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model.go
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package main
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"strings"
"time"
"github.com/nymo-net/nymo"
)
type baseClient = [2]interface{}
type baseServer = [2]json.RawMessage
type newMessage struct {
Target interface{} `json:"target"`
Message string `json:"message,omitempty"`
Content string `json:"content"`
}
type msgRender struct {
Self bool
Content string
SendTime *time.Time
PrepareId int64
}
func (w *webui) recvMessage(target uint, content string, sendTime time.Time) {
var buf bytes.Buffer
err := indexTpl.ExecuteTemplate(&buf, "message", msgRender{Content: content, SendTime: &sendTime})
if err != nil {
log.Fatal(err)
}
w.broadcast("new_msg", newMessage{
Target: target,
Content: buf.String(),
Message: content,
})
}
type setAlias struct {
Id uint `json:"id"`
Name *string `json:"name,omitempty"`
}
type metadata struct {
Version string `json:"version"`
Address string `json:"address"`
Peers []string `json:"peers"`
Servers []string `json:"servers"`
}
type msgSent struct {
Target uint `json:"target"`
Id int64 `json:"id"`
Message string `json:"message,omitempty"`
Content string `json:"content,omitempty"`
Err *string `json:"err,omitempty"`
}
func (w *webui) broadcast(action string, msg interface{}) {
w.wsLock.RLock()
defer w.wsLock.RUnlock()
for _, ch := range w.wsHandler {
ch <- baseClient{action, msg}
}
}
func (w *webui) msgSent(target uint, id int64, msg, content string, err error) {
var errStr *string
if err != nil {
errStr = new(string)
*errStr = err.Error()
}
w.broadcast("msg_sent", msgSent{
Target: target,
Id: id,
Message: msg,
Content: content,
Err: errStr,
})
}
func (w *webui) newUser(row uint, id []byte) {
var buf bytes.Buffer
err := indexTpl.ExecuteTemplate(&buf, "contact", contact{
RowID: row,
Address: id,
})
if err != nil {
log.Fatal(err)
}
w.broadcast("new_user", buf.String())
}
func (w *webui) newMessage(msg json.RawMessage) error {
var nm newMessage
if err := json.Unmarshal(msg, &nm); err != nil {
return err
}
nm.Message = strings.TrimSpace(nm.Message)
if nm.Message == "" {
return errors.New("empty message")
}
var address *nymo.Address
switch addr := nm.Target.(type) {
case float64:
target := uint(addr)
if target <= 0 {
return errors.New("invalid receiver id")
}
row := w.db.QueryRow("SELECT `key` FROM `user` WHERE `rowid`=?", target)
if row.Err() != nil {
return row.Err()
}
var receiver []byte
if err := row.Scan(&receiver); err != nil {
return err
}
address = nymo.NewAddressFromBytes(receiver)
if address == nil {
log.Fatal("[webui, db] invalid receiver address")
}
nm.Target = target
case string:
address = nymo.NewAddress(addr)
if address == nil {
return errors.New("invalid receiver address")
}
var err error
nm.Target, err = w.db.lookupUserId(address.Bytes())
if err != nil {
return err
}
default:
return fmt.Errorf("unknown receiver type %T", addr)
}
exec, err := w.db.Exec("INSERT INTO `dec_msg` (`target`,`self`,`content`) VALUES (?,TRUE,?)", nm.Target, nm.Message)
if err != nil {
return err
}
insertId, err := exec.LastInsertId()
if err != nil {
return err
}
go func() {
var buf bytes.Buffer
e := indexTpl.ExecuteTemplate(&buf, "message", msgRender{
Self: true,
Content: nm.Message,
PrepareId: insertId,
})
if e != nil {
log.Fatalf("[webui, template] %s", e)
}
oriMsg := nm.Message
nm.Message = ""
nm.Content = buf.String()
buf.Reset()
w.broadcast("new_msg", nm)
sendTime := time.Now()
e = w.user.NewMessage(address, []byte(oriMsg))
if e == nil {
_, e = w.db.Exec("UPDATE `dec_msg` SET `send_time`=? WHERE ROWID=?", sendTime.UnixMilli(), insertId)
if e != nil {
log.Fatalf("[webui, db] %s", e)
}
e = indexTpl.ExecuteTemplate(&buf, "message", msgRender{
Self: true,
Content: oriMsg,
SendTime: &sendTime,
})
if e != nil {
log.Fatalf("[webui, template] %s", e)
}
} else {
_, e = w.db.Exec("DELETE FROM `dec_msg` WHERE ROWID=?", insertId)
if e != nil {
log.Fatalf("[webui, db] %s", e)
}
}
w.msgSent(nm.Target.(uint), insertId, oriMsg, buf.String(), e)
}()
return nil
}
func (w *webui) setAlias(msg json.RawMessage) error {
var nm setAlias
if err := json.Unmarshal(msg, &nm); err != nil {
return err
}
_, err := w.db.Exec("UPDATE `user` SET `alias`=? WHERE `rowid`=?", nm.Name, nm.Id)
if err != nil {
return err
}
go w.broadcast("alias", nm)
return nil
}
type history struct {
Id uint `json:"id"`
Content string `json:"content"`
}
func (w *webui) getHistory(msg json.RawMessage) (*history, error) {
var id uint
if err := json.Unmarshal(msg, &id); err != nil {
return nil, err
}
query, err := w.db.Query(
"SELECT ROWID, `self`, `content`, `send_time` FROM `dec_msg` WHERE `target`=? ORDER BY ROWID DESC", id)
if err != nil {
return nil, err
}
var msgs []msgRender
for query.Next() {
var r msgRender
var t *int64
err = query.Scan(&r.PrepareId, &r.Self, &r.Content, &t)
if err != nil {
return nil, err
}
if t != nil {
r.SendTime = new(time.Time)
*r.SendTime = time.UnixMilli(*t)
}
msgs = append(msgs, r)
}
var buf bytes.Buffer
err = indexTpl.ExecuteTemplate(&buf, "messages", msgs)
if err != nil {
log.Fatal(err)
}
return &history{
Id: id,
Content: buf.String(),
}, nil
}