WIP settings system.

- updated dbdiagrams schema
- [BREAKING] force failure if `notify.filter_attributes` or `notify.level` is set
- added Settings table (and default values during migration)
- Added Save Settings and Get Settings functions.
- Added web API endpoints for getting and saving settings.
- Deprecated old Notify* constants. Created new MetricsStatus* and MetricsNotifyLevel constants.

webapp/backend/pkg/database/interface.go

@@ -28,4 +28,7 @@ type DeviceRepo interface {
 
 	GetSummary(ctx context.Context) (map[string]*models.DeviceSummary, error)
 	GetSmartTemperatureHistory(ctx context.Context, durationKey string) (map[string][]measurements.SmartTemperature, error)
+
+	GetSettings(ctx context.Context) (*models.Settings, error)
+	SaveSettings(ctx context.Context, settings models.Settings) error
 }

webapp/backend/pkg/database/migrations/m20220716214900/setting.go

@@ -8,8 +8,9 @@ type Setting struct {
 	//GORM attributes, see: http://gorm.io/docs/conventions.html
 	gorm.Model
 
-	SettingKeyName  string `json:"setting_key_name"`
-	SettingDataType string `json:"setting_data_type"`
+	SettingKeyName        string `json:"setting_key_name"`
+	SettingKeyDescription string `json:"setting_key_description"`
+	SettingDataType       string `json:"setting_data_type"`
 
 	SettingValueNumeric int64  `json:"setting_value_numeric"`
 	SettingValueString  string `json:"setting_value_string"`

webapp/backend/pkg/database/scrutiny_repository_migrations.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"github.com/analogj/scrutiny/webapp/backend/pkg"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/database/migrations/m20201107210306"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/database/migrations/m20220503120000"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/database/migrations/m20220509170100"
@@ -281,7 +282,33 @@ func (sr *scrutinyRepository) Migrate(ctx context.Context) error {
 			Migrate: func(tx *gorm.DB) error {
 
 				// adding the settings table.
-				return tx.AutoMigrate(m20220716214900.Setting{})
+				err := tx.AutoMigrate(m20220716214900.Setting{})
+				if err != nil {
+					return err
+				}
+				//add defaults.
+
+				var defaultSettings = []m20220716214900.Setting{
+					{
+						SettingKeyName:        "metrics.notify.level",
+						SettingKeyDescription: "Determines which device status will cause a notification (fail or warn)",
+						SettingDataType:       "numeric",
+						SettingValueNumeric:   int64(pkg.MetricsNotifyLevelFail), // options: 'fail' or 'warn'
+					},
+					{
+						SettingKeyName:        "metrics.status.filter_attributes",
+						SettingKeyDescription: "Determines which attributes should impact device status",
+						SettingDataType:       "numeric",
+						SettingValueNumeric:   int64(pkg.MetricsStatusFilterAttributesAll), // options: 'all' or  'critical'
+					},
+					{
+						SettingKeyName:        "metrics.status.threshold",
+						SettingKeyDescription: "Determines which threshold should impact device status",
+						SettingDataType:       "string",
+						SettingValueNumeric:   int64(pkg.MetricsStatusThresholdBoth), // options: 'scrutiny', 'smart', 'both'
+					},
+				}
+				return tx.Create(&defaultSettings).Error
 			},
 		},
 	})

webapp/backend/pkg/database/scrutiny_repository_settings.go

@@ -0,0 +1,33 @@
+package database
+
+import (
+	"context"
+	"fmt"
+	"github.com/analogj/scrutiny/webapp/backend/pkg/models"
+)
+
+func (sr *scrutinyRepository) GetSettings(ctx context.Context) (*models.Settings, error) {
+	settingsEntries := []models.SettingEntry{}
+	if err := sr.gormClient.WithContext(ctx).Find(&settingsEntries).Error; err != nil {
+		return nil, fmt.Errorf("Could not get settings from DB: %v", err)
+	}
+
+	settings := models.Settings{}
+	settings.PopulateFromSettingEntries(settingsEntries)
+
+	return &settings, nil
+}
+func (sr *scrutinyRepository) SaveSettings(ctx context.Context, settings models.Settings) error {
+
+	//get current settings
+	settingsEntries := []models.SettingEntry{}
+	if err := sr.gormClient.WithContext(ctx).Find(&settingsEntries).Error; err != nil {
+		return fmt.Errorf("Could not get settings from DB: %v", err)
+	}
+
+	// override with values from settings object
+	settingsEntries = settings.UpdateSettingEntries(settingsEntries)
+
+	// store in database.
+	return sr.gormClient.Updates(&settingsEntries).Error
+}