✨ Call APIs

pkg/services/calls.go

@@ -0,0 +1,146 @@
+package services
+
+import (
+	"errors"
+	"fmt"
+	"git.solsynth.dev/hydrogen/messaging/pkg/database"
+	"git.solsynth.dev/hydrogen/messaging/pkg/models"
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/rs/zerolog/log"
+	"github.com/samber/lo"
+	"github.com/spf13/viper"
+	"gorm.io/gorm"
+	"time"
+)
+
+func ListCall(channel models.Channel, take, offset int) ([]models.Call, error) {
+	var calls []models.Call
+	if err := database.C.
+		Where(models.Call{ChannelID: channel.ID}).
+		Limit(take).
+		Offset(offset).
+		Preload("Founder").
+		Preload("Founder.Account").
+		Preload("Channel").
+		Order("created_at DESC").
+		Find(&calls).Error; err != nil {
+		return calls, err
+	} else {
+		return calls, nil
+	}
+}
+
+func GetCall(channel models.Channel, id uint) (models.Call, error) {
+	var call models.Call
+	if err := database.C.
+		Where(models.Call{
+			BaseModel: models.BaseModel{ID: id},
+			ChannelID: channel.ID,
+		}).
+		Preload("Founder").
+		Preload("Founder.Account").
+		Preload("Channel").
+		Order("created_at DESC").
+		First(&call).Error; err != nil {
+		return call, err
+	} else {
+		return call, nil
+	}
+}
+
+func GetOngoingCall(channel models.Channel) (models.Call, error) {
+	var call models.Call
+	if err := database.C.
+		Where(models.Call{ChannelID: channel.ID}).
+		Where("ended_at IS NULL").
+		Preload("Founder").
+		Preload("Channel").
+		Order("created_at DESC").
+		First(&call).Error; err != nil {
+		return call, err
+	} else {
+		return call, nil
+	}
+}
+
+func NewCall(channel models.Channel, founder models.ChannelMember) (models.Call, error) {
+	call := models.Call{
+		Provider:   models.CallProviderJitsi,
+		ExternalID: channel.Name,
+		FounderID:  founder.ID,
+		ChannelID:  channel.ID,
+		Founder:    founder,
+		Channel:    channel,
+	}
+
+	if _, err := GetOngoingCall(channel); err == nil || !errors.Is(err, gorm.ErrRecordNotFound) {
+		return call, fmt.Errorf("this channel already has an ongoing call")
+	}
+
+	var members []models.ChannelMember
+	if err := database.C.Save(&call).Error; err != nil {
+		return call, err
+	} else if err = database.C.Where(models.ChannelMember{
+		ChannelID: call.ChannelID,
+	}).Preload("Account").Find(&members).Error; err == nil {
+		call, _ = GetCall(call.Channel, call.ID)
+		for _, member := range members {
+			if member.ID != call.Founder.ID {
+				if member.Notify == models.NotifyLevelAll {
+					err = NotifyAccount(member.Account,
+						fmt.Sprintf("New Call #%s", call.Channel.Alias),
+						fmt.Sprintf("%s starts a new call", call.Founder.Account.Name),
+						false,
+					)
+					if err != nil {
+						log.Warn().Err(err).Msg("An error occurred when trying notify user.")
+					}
+				}
+			}
+			PushCommand(member.AccountID, models.UnifiedCommand{
+				Action:  "calls.new",
+				Payload: call,
+			})
+		}
+	}
+
+	return call, nil
+}
+
+func EndCall(call models.Call) (models.Call, error) {
+	call.EndedAt = lo.ToPtr(time.Now())
+
+	var members []models.ChannelMember
+	if err := database.C.Save(&call).Error; err != nil {
+		return call, err
+	} else if err = database.C.Where(models.ChannelMember{
+		ChannelID: call.ChannelID,
+	}).Preload("Account").Find(&members).Error; err == nil {
+		call, _ = GetCall(call.Channel, call.ID)
+		for _, member := range members {
+			PushCommand(member.AccountID, models.UnifiedCommand{
+				Action:  "calls.end",
+				Payload: call,
+			})
+		}
+	}
+
+	return call, nil
+}
+
+func EncodeCallToken(call models.Call, user models.Account) (string, error) {
+	tk := jwt.NewWithClaims(jwt.SigningMethodHS512, jwt.MapClaims{
+		"context": jwt.MapClaims{
+			"user": jwt.MapClaims{
+				"avatar": user.Avatar,
+				"name":   user.Name,
+			},
+		},
+		"aud":  viper.GetString("meeting.client_id"),
+		"iss":  viper.GetString("domain"),
+		"sub":  "meet.jitsi",
+		"room": call.ExternalID,
+	})
+
+	return tk.SignedString([]byte(viper.GetString("meeting.client_secret")))
+}