Develop

.coderabbit.yaml

@@ -37,6 +37,9 @@ reviews:
     - "!**/*.Designer.cs"
     - "!**/bin/**"
     - "!**/obj/**"
+    - "!**/Tests/**"
+    - "!**/.claude/**"
+    - "!**/*.md"
   path_instructions: []
   abort_on_close: true
   disable_cache: false
@@ -230,4 +233,4 @@ issue_enrichment:
       labels: []
   labeling:
     labeling_instructions: []
-    auto_apply_labels: false
+    auto_apply_labels: false

Core/Resgrid.Config/FeatureFlagsConfig.cs

@@ -0,0 +1,41 @@
+using System.Collections.Concurrent;
+
+namespace Resgrid.Config
+{
+	/// <summary>
+	/// Global configuration for the built-in feature toggle subsystem. Loaded by ConfigProcessor via
+	/// reflection (keys: "FeatureFlagsConfig.Field" in JSON or "RESGRID:FeatureFlagsConfig:Field" env).
+	/// </summary>
+	public static class FeatureFlagsConfig
+	{
+		/// <summary>
+		/// Master switch for the whole subsystem. When false, evaluations short-circuit to the
+		/// caller-supplied (or code-registered) default and no flag/override data is consulted.
+		/// </summary>
+		public static bool FeatureFlagsEnabled = true;
+
+		/// <summary>
+		/// How long the flag set and per-department overrides are cached. Flag/override writes invalidate
+		/// the relevant cache immediately, so this can be generous.
+		/// </summary>
+		public static int CacheDurationMinutes = 60;
+
+		/// <summary>
+		/// When true, evaluations increment in-memory counters that the usage-flush worker persists to
+		/// FeatureFlagUsages and uses to refresh LastEvaluatedOn (for stale-flag detection).
+		/// </summary>
+		public static bool TrackEvaluations = true;
+
+		/// <summary>How often the usage-flush worker drains the in-memory evaluation counters.</summary>
+		public static int EvaluationFlushIntervalSeconds = 60;
+
+		/// <summary>Non-permanent flags not evaluated within this many days are reported as stale.</summary>
+		public static int StaleFlagThresholdDays = 90;
+
+		/// <summary>
+		/// Code-registered boolean defaults keyed by flag key. Used as the fallback when a flag has not
+		/// yet been seeded in the database, so new flags behave predictably before they exist as rows.
+		/// </summary>
+		public static ConcurrentDictionary<string, bool> CodeDefaults = new ConcurrentDictionary<string, bool>();
+	}
+}

Core/Resgrid.Model/AuditLogTypes.cs

@@ -160,6 +160,9 @@ public enum AuditLogTypes
 		WeatherAlertZoneDeleted,
 		WeatherAlertZoneEnabled,
 		WeatherAlertZoneDisabled,
-		WeatherAlertSettingsChanged
+		WeatherAlertSettingsChanged,
+		// Feature Toggles
+		FeatureFlagChanged,
+		FeatureFlagOverrideChanged
 	}
 }

Core/Resgrid.Model/FeatureFlagKeys.cs

@@ -0,0 +1,16 @@
+namespace Resgrid.Model
+{
+	/// <summary>
+	/// Well-known feature flag keys consumed by application code. Keys are matched case-insensitively by
+	/// <see cref="Services.IFeatureToggleService"/>. When adding a key here, seed a matching flag row via a
+	/// migration (see M0072) so the flag is immediately manageable from the admin UI/API.
+	/// </summary>
+	public static class FeatureFlagKeys
+	{
+		/// <summary>
+		/// Routes inbound Twilio SMS through the new chatbot ingress pipeline. When off (globally or for a
+		/// specific department) the original text-command handling in TwilioController is used instead.
+		/// </summary>
+		public const string ChatbotTwilioTextIntegration = "Chatbot.TwilioTextIntegration";
+	}
+}

Core/Resgrid.Model/FeatureToggles/FeatureFlag.cs

@@ -0,0 +1,125 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Newtonsoft.Json;
+using ProtoBuf;
+
+namespace Resgrid.Model
+{
+	/// <summary>
+	/// A system-wide feature flag definition with a global default. Per-department behavior is
+	/// layered on top via <see cref="FeatureFlagOverride"/>, <see cref="FeatureFlagTargetingRule"/>
+	/// and <see cref="FeatureFlagPrerequisite"/>.
+	/// </summary>
+	[Table("FeatureFlags")]
+	[ProtoContract]
+	public class FeatureFlag : IEntity
+	{
+		[Key]
+		[Required]
+		[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+		[ProtoMember(1)]
+		public int FeatureFlagId { get; set; }
+
+		/// <summary>Stable identifier referenced by code and clients (e.g. "new-dispatch-ui").</summary>
+		[Required]
+		[ProtoMember(2)]
+		public string FlagKey { get; set; }
+
+		[Required]
+		[ProtoMember(3)]
+		public string Name { get; set; }
+
+		[ProtoMember(4)]
+		public string Description { get; set; }
+
+		[ProtoMember(5)]
+		public string Category { get; set; }
+
+		/// <summary>Comma-separated free-form tags for grouping/searching.</summary>
+		[ProtoMember(6)]
+		public string Tags { get; set; }
+
+		/// <summary>Backing int for <see cref="FeatureFlagValueTypes"/>.</summary>
+		[Required]
+		[ProtoMember(7)]
+		public int FlagType { get; set; }
+
+		/// <summary>The global on/off default and application-wide kill switch.</summary>
+		[Required]
+		[ProtoMember(8)]
+		public bool IsEnabledGlobally { get; set; }
+
+		/// <summary>Value returned when the flag resolves "on" for multivariate flags.</summary>
+		[ProtoMember(9)]
+		public string DefaultValue { get; set; }
+
+		/// <summary>Value returned when the flag resolves "off" for multivariate flags.</summary>
+		[ProtoMember(10)]
+		public string OffValue { get; set; }
+
+		/// <summary>0-100 gradual rollout across departments when globally on; null = 100%.</summary>
+		[ProtoMember(11)]
+		public int? RolloutPercentage { get; set; }
+
+		/// <summary>Optional minimum subscription plan id required for the flag to be on.</summary>
+		[ProtoMember(12)]
+		public int? MinimumPlanType { get; set; }
+
+		/// <summary>Optional environment scope (backing int for SystemEnvironment); null = all.</summary>
+		[ProtoMember(13)]
+		public int? Environment { get; set; }
+
+		[ProtoMember(14)]
+		public DateTime? EnableOn { get; set; }
+
+		[ProtoMember(15)]
+		public DateTime? DisableOn { get; set; }
+
+		[Required]
+		[ProtoMember(16)]
+		public bool IsArchived { get; set; }
+
+		/// <summary>Permanent flags are excluded from stale-flag detection.</summary>
+		[Required]
+		[ProtoMember(17)]
+		public bool IsPermanent { get; set; }
+
+		[ProtoMember(18)]
+		public DateTime? LastEvaluatedOn { get; set; }
+
+		[Required]
+		[ProtoMember(19)]
+		public DateTime CreatedOn { get; set; }
+
+		[ProtoMember(20)]
+		public string CreatedByUserId { get; set; }
+
+		[ProtoMember(21)]
+		public DateTime? UpdatedOn { get; set; }
+
+		[ProtoMember(22)]
+		public string UpdatedByUserId { get; set; }
+
+		[NotMapped]
+		[JsonIgnore]
+		public object IdValue
+		{
+			get { return FeatureFlagId; }
+			set { FeatureFlagId = (int)value; }
+		}
+
+		[NotMapped]
+		public string TableName => "FeatureFlags";
+
+		[NotMapped]
+		public string IdName => "FeatureFlagId";
+
+		[NotMapped]
+		public int IdType => 0;
+
+		[NotMapped]
+		public IEnumerable<string> IgnoredProperties => new string[] { "IdValue", "IdType", "TableName", "IdName" };
+	}
+}

Core/Resgrid.Model/FeatureToggles/FeatureFlagAttributeTypes.cs

@@ -0,0 +1,24 @@
+namespace Resgrid.Model
+{
+	/// <summary>
+	/// The department attribute a targeting rule compares against. Resolved lazily (and cached) during
+	/// evaluation from the department, its subscription plan, and personnel counts.
+	/// </summary>
+	public enum FeatureFlagAttributeTypes
+	{
+		/// <summary>The department's current subscription plan id.</summary>
+		PlanType = 0,
+		/// <summary>The department's country/region.</summary>
+		Country = 1,
+		/// <summary>The department's active personnel count.</summary>
+		PersonnelCount = 2,
+		/// <summary>The department's type (e.g. fire, ems).</summary>
+		DepartmentType = 3,
+		/// <summary>The department's creation date.</summary>
+		CreatedDate = 4,
+		/// <summary>The department id itself (allow/deny lists).</summary>
+		DepartmentId = 5,
+		/// <summary>A caller-supplied custom context value (matched by ComparisonValue key).</summary>
+		Custom = 6,
+	}
+}

Core/Resgrid.Model/FeatureToggles/FeatureFlagEvaluation.cs

@@ -0,0 +1,27 @@
+namespace Resgrid.Model
+{
+	/// <summary>
+	/// The resolved state of a feature flag for a specific department, including the reason it
+	/// resolved that way. Returned by the feature toggle service and surfaced by the poll API.
+	/// </summary>
+	public class FeatureFlagEvaluation
+	{
+		public int FeatureFlagId { get; set; }
+
+		/// <summary>The flag's stable key.</summary>
+		public string Key { get; set; }
+
+		public bool IsEnabled { get; set; }
+
+		/// <summary>Resolved value (for multivariate flags); for boolean flags mirrors IsEnabled.</summary>
+		public string Value { get; set; }
+
+		public FeatureFlagValueTypes ValueType { get; set; }
+
+		/// <summary>Which rule in the evaluation ladder decided the result.</summary>
+		public FeatureFlagEvaluationSource Source { get; set; }
+
+		/// <summary>The targeting rule id when <see cref="Source"/> is TargetingRule.</summary>
+		public int? MatchedRuleId { get; set; }
+	}
+}

Core/Resgrid.Model/FeatureToggles/FeatureFlagEvaluationSource.cs

@@ -0,0 +1,32 @@
+namespace Resgrid.Model
+{
+	/// <summary>
+	/// Explains which rule in the evaluation ladder decided a flag's value for a department. Returned
+	/// on every evaluation so the poll API and logs can show LaunchDarkly-style "evaluation reasons".
+	/// </summary>
+	public enum FeatureFlagEvaluationSource
+	{
+		/// <summary>No flag with the requested key exists.</summary>
+		NotFound = 0,
+		/// <summary>Value came from a code-registered default in FeatureFlagsConfig.</summary>
+		CodeDefault = 1,
+		/// <summary>The whole feature-toggle subsystem is disabled via config.</summary>
+		SubsystemDisabled = 2,
+		/// <summary>The flag is archived.</summary>
+		Archived = 3,
+		/// <summary>Decided by the flag's scheduled enable/disable window.</summary>
+		Schedule = 4,
+		/// <summary>A prerequisite flag was not satisfied.</summary>
+		Prerequisite = 5,
+		/// <summary>An explicit per-department override decided the value.</summary>
+		Override = 6,
+		/// <summary>The department's subscription plan did not meet the flag's minimum plan.</summary>
+		PlanGate = 7,
+		/// <summary>A matching attribute/segment targeting rule decided the value.</summary>
+		TargetingRule = 8,
+		/// <summary>Decided by the global default and the percentage rollout bucket.</summary>
+		GlobalRollout = 9,
+		/// <summary>Decided by the global default (fully on/off, no rollout in effect).</summary>
+		GlobalDefault = 10,
+	}
+}

Core/Resgrid.Model/FeatureToggles/FeatureFlagOperatorTypes.cs

@@ -0,0 +1,19 @@
+namespace Resgrid.Model
+{
+	/// <summary>
+	/// The comparison applied by a targeting rule between a department attribute and the rule's
+	/// ComparisonValue. In/NotIn treat ComparisonValue as a comma-separated list.
+	/// </summary>
+	public enum FeatureFlagOperatorTypes
+	{
+		Equals = 0,
+		NotEquals = 1,
+		In = 2,
+		NotIn = 3,
+		GreaterThan = 4,
+		GreaterThanOrEqual = 5,
+		LessThan = 6,
+		LessThanOrEqual = 7,
+		Contains = 8,
+	}
+}

Core/Resgrid.Model/FeatureToggles/FeatureFlagOverride.cs

@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Newtonsoft.Json;
+using ProtoBuf;
+
+namespace Resgrid.Model
+{
+	/// <summary>
+	/// A per-department override of a feature flag's value. An explicit, non-expired override takes
+	/// precedence over rollout and targeting rules.
+	/// </summary>
+	[Table("FeatureFlagOverrides")]
+	[ProtoContract]
+	public class FeatureFlagOverride : IEntity
+	{
+		[Key]
+		[Required]
+		[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+		[ProtoMember(1)]
+		public int FeatureFlagOverrideId { get; set; }
+
+		[Required]
+		[ProtoMember(2)]
+		public int FeatureFlagId { get; set; }
+
+		[Required]
+		[ProtoMember(3)]
+		public int DepartmentId { get; set; }
+
+		[Required]
+		[ProtoMember(4)]
+		public bool IsEnabled { get; set; }
+
+		/// <summary>Override variant value for multivariate flags.</summary>
+		[ProtoMember(5)]
+		public string FlagValue { get; set; }
+
+		[ProtoMember(6)]
+		public string Reason { get; set; }
+
+		/// <summary>Optional expiry after which the override is ignored.</summary>
+		[ProtoMember(7)]
+		public DateTime? ExpiresOn { get; set; }
+
+		[Required]
+		[ProtoMember(8)]
+		public DateTime CreatedOn { get; set; }
+
+		[ProtoMember(9)]
+		public string CreatedByUserId { get; set; }
+
+		[ProtoMember(10)]
+		public DateTime? UpdatedOn { get; set; }
+
+		[ProtoMember(11)]
+		public string UpdatedByUserId { get; set; }
+
+		[NotMapped]
+		[JsonIgnore]
+		public object IdValue
+		{
+			get { return FeatureFlagOverrideId; }
+			set { FeatureFlagOverrideId = (int)value; }
+		}
+
+		[NotMapped]
+		public string TableName => "FeatureFlagOverrides";
+
+		[NotMapped]
+		public string IdName => "FeatureFlagOverrideId";
+
+		[NotMapped]
+		public int IdType => 0;
+
+		[NotMapped]
+		public IEnumerable<string> IgnoredProperties => new string[] { "IdValue", "IdType", "TableName", "IdName" };
+	}
+}