created tasks endpoint for devices

server/internal/models/task.go

@@ -0,0 +1,51 @@
+package models
+
+import "time"
+
+type TaskStatus string
+type DeviceTaskType string
+
+const (
+	TaskStatusPending  TaskStatus = "pending"
+	TaskStatusRunning  TaskStatus = "running"
+	TaskStatusFinished TaskStatus = "finished"
+	TaskStatusError    TaskStatus = "error"
+)
+
+const (
+	// 1. start/stop audiostream
+	TaskTypeStartStream DeviceTaskType = "start_stream"
+	TaskTypeStopStream  DeviceTaskType = "stop_stream"
+
+	// 2. start/stop recording
+	TaskTypeStartRecording DeviceTaskType = "start_recording"
+	TaskTypeStopRecording  DeviceTaskType = "stop_recording"
+
+	// 3. change configuration (sleep timeout, jitter, recording duration)
+	TaskTypeUpdateConfig DeviceTaskType = "update_config"
+
+	// 4. set deep sleep duration (minutes)
+	TaskTypeSetDeepSleep DeviceTaskType = "set_deep_sleep"
+)
+
+type DEviceTask struct {
+	ID         uint           `gorm:"primaryKey"`
+	DeviceGUID string         `gorm:"index;not null"`
+	Type       DeviceTaskType `gorm:"type:varchar(64);not null"`
+	// JSON payload from server to device (parameters)
+	Payload string     `gorm:"type:text;not null;default:'{}'"`
+	Status  TaskStatus `gorm:"type:varchar(16);not null;index"`
+	// Optional error/reason from server or device
+	ErrorMsg string `gorm:"type:text"`
+	// Raw result JSON from device (success path)
+	Result string `gorm:"type:text"`
+
+	// State timing
+	CreatedAt  time.Time
+	UpdatedAt  time.Time
+	StartedAt  *time.Time // when device fetched/acknowledged (Running)
+	FinishedAt *time.Time // when device posted result (Finished/Error)
+
+	// Optional: small attempt/lease system if you ever need retries/timeouts
+	// Attempts int `gorm:"not null;default:0"`
+}