// PromptOptimizer.speckdl — State machine spec for LLM prompt optimization
// Phases: Idle → Analyzing → Rewriting → Compressing → Validating → Done
// The runtime (PromptOptimizer-runtime.ts) implements the actual optimization logic.

speck PromptOptimizer {
  version: "0.1.0"
  author:  "sscoble"
  license: "MIT"

  // ─── State ────────────────────────────────────────────────
  state: {
    phase:              OptimizerPhase,
    originalPrompt:     String,
    optimizedPrompt:    String,
    analysis:           PromptAnalysis,
    strategiesApplied:  StringList,
    rewriteCount:       Nat,
    originalTokens:     Nat,
    optimizedTokens:    Nat,
    tokenReduction:     Nat,
    confidence:         Nat,
    issues:             StringList,
    errors:             StringList
  }

  init: {
    phase := Idle,
    originalPrompt := "",
    optimizedPrompt := "",
    analysis := null,
    strategiesApplied := [],
    rewriteCount := 0,
    originalTokens := 0,
    optimizedTokens := 0,
    tokenReduction := 0,
    confidence := 0,
    issues := [],
    errors := []
  }

  // ─── Events ───────────────────────────────────────────────

  event PromptSubmitted {
    prompt: String,
    context: String,
    model: String
  }

  event AnalysisComplete {
    tokenCount: Nat,
    redundancyScore: Nat,
    structureScore: Nat,
    constraintCount: Nat,
    instructionCount: Nat,
    issues: StringList
  }

  event RewriteApplied {
    strategy: String,
    beforeTokens: Nat,
    afterTokens: Nat
  }

  event CompressionComplete {
    originalTokens: Nat,
    compressedTokens: Nat,
    reduction: Nat
  }

  event ValidationComplete {
    criteria: String,
    confidence: Nat,
    passed: Bool
  }

  event OptimizationFailed {
    phase: OptimizerPhase,
    message: String
  }

  // ─── Actions ──────────────────────────────────────────────

  // Submit a prompt for optimization
  action submit(prompt: String, context: String, model: String) {
    require phase === Idle
    require len(prompt) > 0

    this.phase := Analyzing
    this.originalPrompt := prompt
    this.errors := []

    emit PromptSubmitted { prompt: prompt, context: context, model: model }
  }

  // Apply a rewrite strategy
  action rewrite(strategy: String) {
    require phase === Analyzing || phase === Validating

    this.phase := Rewriting
    this.rewriteCount := rewriteCount + 1

    emit RewriteApplied { strategy: strategy, beforeTokens: originalTokens, afterTokens: 0 }
  }

  // Compress the prompt
  action compress(targetTokens: Nat) {
    require phase === Rewriting

    this.phase := Compressing

    emit CompressionComplete { originalTokens: originalTokens, compressedTokens: 0, reduction: 0 }
  }

  // Validate the optimized prompt
  action validate(criteria: String) {
    require phase === Rewriting || phase === Compressing

    this.phase := Validating

    emit ValidationComplete { criteria: criteria, confidence: 0, passed: true }
  }

  // Accept the result
  action complete() {
    require phase === Validating

    this.phase := Done
  }

  // Start over
  action reset() {
    this.phase := Idle
    this.originalPrompt := ""
    this.optimizedPrompt := ""
    this.rewriteCount := 0
  }

  // ─── Interface ────────────────────────────────────────────

  interface OptimizerPhase {
    Idle
    Analyzing
    Rewriting
    Compressing
    Validating
    Done
    Failed
  }

  // ─── Constraints ───────────────────────────────────────────

  constraint mustPreserveIntent: "Optimized prompt must preserve the original intent"
  constraint mustReduceOrMaintain: "Optimized prompt must have equal or fewer tokens"
  constraint noInfiniteRewrite: "Maximum 3 rewrite cycles before forcing Done"

  // ─── Verification ──────────────────────────────────────────

  verify eventuallyDone: "Every optimization request must eventually reach Done or Failed"
  verify analyzingPrecedesRewriting: "Rewriting must be preceded by Analyzing"
}