package self

import "fmt"

type AssessmentID string
type LearningLedgerEntryID string
type AssessmentState string

type LearningSignalKind string
type DiagnosisClass string
type EpistemicStatus string
type InterventionClass string
type DecisionRegretKind string
type CandidateState string

const (
	SignalVerifiedFailure               LearningSignalKind = "VERIFIED_FAILURE"
	SignalUserCorrection                LearningSignalKind = "USER_CORRECTION"
	SignalRepeatedMistake               LearningSignalKind = "REPEATED_KNOWN_MISTAKE"
	SignalReflexDivergence              LearningSignalKind = "REFLEX_DIVERGENCE"
	SignalSkillFallback                 LearningSignalKind = "SKILL_FALLBACK"
	SignalUnexpectedEscalation          LearningSignalKind = "UNEXPECTED_ESCALATION"
	SignalOutcomeMismatch               LearningSignalKind = "OUTCOME_MISMATCH"
	SignalRetryFallback                 LearningSignalKind = "RETRY_FALLBACK"
	SignalStaleDependency               LearningSignalKind = "STALE_DEPENDENCY"
	SignalDecisionRegret                LearningSignalKind = "DECISION_REGRET"
	SignalBetterSolution                LearningSignalKind = "BETTER_SOLUTION"
	DiagnosisMemoryMissing              DiagnosisClass     = "MEMORY_MISSING"
	DiagnosisMemoryNotRetrieved         DiagnosisClass     = "MEMORY_NOT_RETRIEVED"
	DiagnosisWrongScope                 DiagnosisClass     = "WRONG_SCOPE"
	DiagnosisStaleKnowledge             DiagnosisClass     = "STALE_KNOWLEDGE"
	DiagnosisContextSelection           DiagnosisClass     = "CONTEXT_SELECTION"
	DiagnosisReasoningFailure           DiagnosisClass     = "REASONING_FAILURE"
	DiagnosisSkillFailure               DiagnosisClass     = "SKILL_FAILURE"
	DiagnosisReflexFailure              DiagnosisClass     = "REFLEX_FAILURE"
	DiagnosisToolFailure                DiagnosisClass     = "TOOL_FAILURE"
	DiagnosisProviderFailure            DiagnosisClass     = "PROVIDER_FAILURE"
	DiagnosisOutcomeVerificationFailure DiagnosisClass     = "OUTCOME_VERIFICATION_FAILURE"
	DiagnosisRoutingInefficiency        DiagnosisClass     = "ROUTING_INEFFICIENCY"
	DiagnosisUnknown                    DiagnosisClass     = "UNKNOWN_CAUSE"
	EpistemicKnown                      EpistemicStatus    = "KNOWN"
	EpistemicSupported                  EpistemicStatus    = "SUPPORTED"
	EpistemicHypothesis                 EpistemicStatus    = "HYPOTHESIS"
	EpistemicUnknown                    EpistemicStatus    = "UNKNOWN"
	InterventionConfiguration           InterventionClass  = "CONFIGURATION"
	InterventionSkillReview             InterventionClass  = "SKILL_REVIEW"
	InterventionReflexReview            InterventionClass  = "REFLEX_REVIEW"
	InterventionRoutingReview           InterventionClass  = "ROUTING_REVIEW"
	InterventionProviderReview          InterventionClass  = "PROVIDER_REVIEW"
	InterventionContextReview           InterventionClass  = "CONTEXT_REVIEW"
	RegretUnavailableThen               DecisionRegretKind = "INFORMATION_UNAVAILABLE_THEN"
	RegretAvailableUnused               DecisionRegretKind = "INFORMATION_AVAILABLE_UNUSED"
	RegretIgnoredInContext              DecisionRegretKind = "EVIDENCE_IGNORED_IN_CONTEXT"
	CandidateProposed                   CandidateState     = "PROPOSED"
	CandidateEvaluating                 CandidateState     = "EVALUATING"
	CandidateKept                       CandidateState     = "KEPT"
	CandidateRejected                   CandidateState     = "REJECTED"
	CandidateRolledBack                 CandidateState     = "ROLLED_BACK"
)

const (
	AssessmentCandidate  AssessmentState = "CANDIDATE"
	AssessmentConfirmed  AssessmentState = "CONFIRMED"
	AssessmentMonitoring AssessmentState = "MONITORING"
	AssessmentResolved   AssessmentState = "RESOLVED"
)

type CompetenceAssessment struct {
	ID                AssessmentID
	PrincipalID       string
	SubjectRef        SemanticReference
	Revision          uint64
	ContextMatcher    []string
	QualityMillis     int64
	ReliabilityMillis int64
	ConfidenceMillis  int64
	EvidenceRefs      []SemanticReference
	LastValidatedAt   int64
	AssessedAt        int64
	SupersedesRef     *SemanticReference
}
type WeaknessPattern struct {
	ID                    AssessmentID
	PrincipalID           string
	Revision              uint64
	PatternKey            string
	ContextMatcher        []string
	FailureMode           string
	DetectionEvidenceRefs []SemanticReference
	State                 AssessmentState
	RecordedAt            int64
	TaskPattern           string
	ScopeKey              string
	EnvironmentVersion    string
	DependencyRefs        []SemanticReference
	Frequency             int
	LastObservedAt        int64
	Severity              int
	AffectedComponent     string
	AffectedStrategy      string
	ConfidenceMillis      int64
	EpistemicStatus       EpistemicStatus
}
type DependencyAssessment struct {
	ID            AssessmentID
	SubjectRef    SemanticReference
	DependencyRef SemanticReference
	ImpactClass   string
	CurrentEffect string
	EvidenceRefs  []SemanticReference
	AssessedAt    int64
}
type ImprovementNeed struct {
	ID                AssessmentID
	PrincipalID       string
	SubjectRef        SemanticReference
	ProblemSummary    string
	EvidenceRefs      []SemanticReference
	ExpectedBenefit   string
	Priority          int
	State             string
	CreatedAt         int64
	Diagnosis         DiagnosisClass
	DiagnosisStatus   EpistemicStatus
	AffectedComponent string
	ScopeKey          string
	Risk              string
	Intervention      InterventionClass
	Hypothesis        string
	EvaluationPlan    string
	MustNotWorsen     string
	RollbackPlan      string
	ResourceCost      string
}

type LearningSignal struct {
	ID                 string
	PrincipalID        string
	Kind               LearningSignalKind
	TaskPattern        string
	ScopeKey           string
	SubjectRef         SemanticReference
	EvidenceRefs       []SemanticReference
	ExpectedOutcome    string
	ActualOutcome      string
	DependencyRefs     []SemanticReference
	EnvironmentVersion string
	ObservedAt         int64
	Severity           int
	UserImpact         int
	CorrectionCount    int
	DecisionRegret     DecisionRegretKind
}

type Diagnosis struct {
	Class            DiagnosisClass
	Status           EpistemicStatus
	Rationale        string
	EvidenceRefs     []SemanticReference
	ConfidenceMillis int64
}

type ImprovementCandidate struct {
	ID                   string
	PrincipalID          string
	NeedRef              SemanticReference
	Hypothesis           string
	ExpectedEffect       string
	EvaluationPlan       string
	MustNotWorsen        []string
	RollbackPlan         string
	ResourceCost         string
	Creator              string
	IndependentEvaluator string
	State                CandidateState
	EvidenceRefs         []SemanticReference
	CreatedAt            int64
}

type ImprovementEvaluation struct {
	CandidateRef      SemanticReference
	Evaluator         string
	EvidenceRefs      []SemanticReference
	ExpectedQuality   int64
	ActualQuality     int64
	ExpectedLatency   int64
	ActualLatency     int64
	MustNotWorsenPass bool
	Decision          CandidateState
	EvaluatedAt       int64
}
type LearningLedgerEntry struct {
	ID                   LearningLedgerEntryID
	PrincipalID          string
	ImprovementNeedRef   *SemanticReference
	ObservedProblem      string
	EvidenceRefs         []SemanticReference
	Diagnosis            string
	Hypothesis           string
	ProposedChangeRef    SemanticReference
	ExpectedImprovement  string
	ActualEvaluationRefs []SemanticReference
	DevelopmentGateRef   *SemanticReference
	BeforeVersionRefs    []SemanticReference
	AfterVersionRefs     []SemanticReference
	Decision             string
	SideEffects          []string
	RollbackRef          *SemanticReference
	RecordedAt           int64
}

func (a CompetenceAssessment) Validate() error {
	if a.ID == "" || a.PrincipalID == "" || !a.SubjectRef.Valid() || a.Revision < 1 || a.ConfidenceMillis < 0 || a.ConfidenceMillis > 1000 || len(a.EvidenceRefs) == 0 || a.AssessedAt < 1 {
		return fmt.Errorf("competence requires evidence")
	}
	return nil
}
func (l LearningLedgerEntry) Validate() error {
	if l.ID == "" || l.PrincipalID == "" || l.ObservedProblem == "" || len(l.EvidenceRefs) == 0 || l.Decision == "" || l.RecordedAt < 1 {
		return fmt.Errorf("learning ledger entry is incomplete")
	}
	return nil
}

func (s LearningSignal) Validate() error {
	if s.ID == "" || s.PrincipalID == "" || s.Kind == "" || s.TaskPattern == "" || s.ScopeKey == "" || !s.SubjectRef.Valid() || len(s.EvidenceRefs) == 0 || s.ObservedAt < 1 {
		return fmt.Errorf("learning signal is incomplete")
	}
	return nil
}

func (d Diagnosis) Validate() error {
	if d.Class == "" || d.Status == "" || len(d.EvidenceRefs) == 0 || d.ConfidenceMillis < 0 || d.ConfidenceMillis > 1000 {
		return fmt.Errorf("diagnosis requires bounded evidence")
	}
	return nil
}

func (c ImprovementCandidate) Validate() error {
	if c.ID == "" || c.PrincipalID == "" || !c.NeedRef.Valid() || c.Hypothesis == "" || c.ExpectedEffect == "" || c.EvaluationPlan == "" || c.MustNotWorsen == nil || c.RollbackPlan == "" || c.Creator == "" || c.IndependentEvaluator == "" || c.Creator == c.IndependentEvaluator || len(c.EvidenceRefs) == 0 || c.CreatedAt < 1 {
		return fmt.Errorf("candidate lacks independent bounded evaluation")
	}
	return nil
}