/**
 * SOVEREIGN IDE FRAMEWORK
 * Integrates all BOB artifacts into unified sovereign development environment
 *
 * Architecture:
 * - Artifact Store (WORM-sealed)
 * - Terminal (shell access)
 * - Editor (Monaco)
 * - Orchestration (QuantumPiper)
 * - Verification (Isabelle + Theorem 3)
 * - Inference (IBM Granite + WebGPU)
 */

import {
  QArtifact,
  ArtifactStore,
  ArtifactType,
  Realm,
  QPManifest,
  PipelineStage,
  WORMTx,
  WORMChain,
  Permission,
  IsabelleSession,
  GraniteModel,
  WebGPUDevice,
  TerminalSession,
} from "./artifacts-schema/ARTIFACT_TYPES";

// =====================================================================
// SOVEREIGN IDE CORE
// =====================================================================

export class SovereignIDE {
  private artifactStore: ArtifactStore;
  private wormChain: WORMChain;
  private isabelleSession: IsabelleSession | null;
  private graniteModel: GraniteModel | null;
  private webgpuDevice: WebGPUDevice | null;
  private terminalSession: TerminalSession | null;

  constructor() {
    this.artifactStore = {
      artifacts: new Map(),
      wormChain: { genesis: null as any, blocks: [], height: 0 },
      proofCache: new Map(),
      capabilityStore: new Map(),
    };
    this.wormChain = this.artifactStore.wormChain;
    this.isabelleSession = null;
    this.graniteModel = null;
    this.webgpuDevice = null;
    this.terminalSession = null;
  }

  // ===================================================================
  // INITIALIZATION
  // ===================================================================

  async initialize(): Promise<void> {
    console.log("[SovereignIDE] Initializing framework...");

    // Init WORM chain
    this.initWORMChain();

    // Init terminal
    await this.initTerminal();

    // Init Isabelle
    await this.initIsabelle();

    // Init IBM Granite (if API key available)
    await this.initGranite();

    // Init WebGPU (if GPU available)
    await this.initWebGPU();

    console.log("[SovereignIDE] ✅ Framework initialized");
  }

  // ===================================================================
  // WORM CHAIN INITIALIZATION (Immutable Attestation)
  // ===================================================================

  private initWORMChain(): void {
    const genesis: WORMTx = {
      hash: this.blake3("GENESIS_SOVEREIGN_IDE"),
      timestamp: Date.now(),
      signature: this.ed25519Sign("GENESIS"),
      artifactType: ArtifactType.ConfigFile,
      height: 0,
    };

    this.wormChain.genesis = genesis;
    this.wormChain.blocks = [genesis];
    this.wormChain.height = 1;

    console.log("[WORM] Chain initialized with genesis block");
  }

  // ===================================================================
  // TERMINAL INITIALIZATION (Sovereign Shell)
  // ===================================================================

  async initTerminal(): Promise<void> {
    try {
      this.terminalSession = {
        sessionId: `term-${Date.now()}`,
        rows: 24,
        cols: 80,
        backend: this.detectTerminalBackend(),
        history: [],
      };

      console.log("[Terminal] ✅ Initialized:", this.terminalSession.backend);
    } catch (e) {
      console.error("[Terminal] ❌ Failed:", e);
    }
  }

  async executeCommand(cmd: string): Promise<string> {
    if (!this.terminalSession) {
      throw new Error("Terminal not initialized");
    }

    try {
      // In browser: execute via service worker or local exec
      const response = await fetch("/api/execute", {
        method: "POST",
        body: JSON.stringify({ cmd }),
      });

      const result = await response.json();
      this.terminalSession.history.push(cmd);

      return result.output;
    } catch (e) {
      return `Error: ${e}`;
    }
  }

  // ===================================================================
  // ISABELLE INITIALIZATION (Theorem Proving)
  // ===================================================================

  async initIsabelle(): Promise<void> {
    try {
      this.isabelleSession = {
        sessionId: `isa-${Date.now()}`,
        workdir: "/tmp/sovereign-isabelle",
        theorems: new Map(),
      };

      console.log("[Isabelle] ✅ Session initialized");
    } catch (e) {
      console.error("[Isabelle] ❌ Failed:", e);
    }
  }

  async submitProof(theorem: string, proofScript: string): Promise<boolean> {
    if (!this.isabelleSession) {
      throw new Error("Isabelle not initialized");
    }

    try {
      // Send to Isabelle process
      const response = await fetch("/api/isabelle/prove", {
        method: "POST",
        body: JSON.stringify({ theorem, proofScript }),
      });

      const result = await response.json();
      const status = result.status === "success" ? "Success" : "Failed";

      this.isabelleSession.theorems.set(theorem, {
        theorem,
        proof: proofScript,
        status: status as any,
        timestamp: Date.now(),
      });

      return status === "Success";
    } catch (e) {
      console.error("[Isabelle] Proof failed:", e);
      return false;
    }
  }

  // ===================================================================
  // IBM GRANITE INITIALIZATION (Inference Engine)
  // ===================================================================

  async initGranite(): Promise<void> {
    try {
      const apiKey = localStorage.getItem("IBM_GRANITE_API_KEY");
      if (!apiKey) {
        console.warn("[Granite] No API key configured");
        return;
      }

      this.graniteModel = {
        modelId: "ibm/granite-13b",
        version: "2026-q2",
        context: 8192,
        vocabSize: 49152,
        quantization: "Q4_K",
        parameters: {},
      };

      console.log("[Granite] ✅ Model loaded:", this.graniteModel.modelId);
    } catch (e) {
      console.error("[Granite] ❌ Failed:", e);
    }
  }

  async inference(prompt: string, onToken: (token: string) => void): Promise<void> {
    if (!this.graniteModel) {
      throw new Error("Granite not initialized");
    }

    try {
      const response = await fetch("/api/granite/inference", {
        method: "POST",
        body: JSON.stringify({
          prompt,
          max_tokens: 512,
          temperature: 0.7,
        }),
      });

      const reader = response.body!.getReader();
      const decoder = new TextDecoder();

      while (true) {
        const { done, value } = await reader.read();
        if (done) break;

        const text = decoder.decode(value);
        onToken(text);
      }
    } catch (e) {
      console.error("[Granite] Inference failed:", e);
    }
  }

  // ===================================================================
  // WEBGPU INITIALIZATION (GPU Compute)
  // ===================================================================

  async initWebGPU(): Promise<void> {
    try {
      if (!navigator.gpu) {
        console.warn("[WebGPU] Not available in this browser");
        return;
      }

      const adapter = await navigator.gpu.requestAdapter();
      if (!adapter) {
        console.warn("[WebGPU] No GPU adapter found");
        return;
      }

      this.webgpuDevice = {
        deviceId: "webgpu-device-0",
        backend: this.detectGPUBackend(),
        maxComputeWorkgroups: [65535, 65535, 65535],
        maxWorkgroupSize: 256,
      };

      console.log("[WebGPU] ✅ Device initialized:", this.webgpuDevice.backend);
    } catch (e) {
      console.error("[WebGPU] ❌ Failed:", e);
    }
  }

  // ===================================================================
  // ARTIFACT MANAGEMENT
  // ===================================================================

  async importArtifact(
    file: File,
    type: ArtifactType,
    realm: Realm
  ): Promise<QArtifact> {
    const buffer = await file.arrayBuffer();
    const hash = this.blake3(new Uint8Array(buffer));

    const artifact: QArtifact = {
      hash,
      type,
      realm,
      team: "user",
      content: new Uint8Array(buffer),
      metadata: {
        timestamp: Date.now(),
        team: "user",
        verificationStatus: "Unverified",
        quantumProps: {},
        sizeBytes: file.size,
        isImmutable: false,
      },
      dependencies: new Map(),
    };

    this.artifactStore.artifacts.set(hash, artifact);
    return artifact;
  }

  async exportArtifact(hash: string): Promise<Blob> {
    const artifact = this.artifactStore.artifacts.get(hash);
    if (!artifact) throw new Error("Artifact not found");

    return new Blob([artifact.content]);
  }

  // ===================================================================
  // ORCHESTRATION (QuantumPiper)
  // ===================================================================

  async executeManifest(manifest: QPManifest): Promise<QArtifact> {
    console.log(`[QuantumPiper] Executing: ${manifest.name}`);

    const results: QArtifact[] = [];

    for (const stageConfig of manifest.stages) {
      if (!stageConfig.enabled) continue;

      console.log(`[Stage] Executing: ${stageConfig.stage}`);

      const stageResult = await this.executeStage(stageConfig.stage, stageConfig.config);
      results.push(stageResult);

      // Attest to WORM chain
      if (manifest.wormAttest) {
        await this.attestArtifact(stageResult);
      }
    }

    // Merge results into final artifact
    const finalArtifact: QArtifact = {
      hash: this.blake3("final"),
      type: ArtifactType.ConfigFile,
      realm: Realm.Runtime,
      team: "orchestration",
      content: JSON.stringify({ stages: results.length }),
      metadata: {
        timestamp: Date.now(),
        team: "orchestration",
        verificationStatus: "TypeChecked",
        quantumProps: {},
        sizeBytes: 0,
        isImmutable: false,
      },
      dependencies: new Map(results.map((r) => [r.hash, r.hash])),
    };

    this.artifactStore.artifacts.set(finalArtifact.hash, finalArtifact);
    return finalArtifact;
  }

  private async executeStage(stage: PipelineStage, config: Record<string, unknown>): Promise<QArtifact> {
    // Stub: each stage executor handles its domain
    const artifact: QArtifact = {
      hash: this.blake3(stage),
      type: ArtifactType.ConfigFile,
      realm: Realm.Runtime,
      team: "orchestration",
      content: `Stage: ${stage}`,
      metadata: {
        timestamp: Date.now(),
        team: "orchestration",
        verificationStatus: "TypeChecked",
        quantumProps: {},
        sizeBytes: 0,
        isImmutable: false,
      },
      dependencies: new Map(),
    };

    return artifact;
  }

  // ===================================================================
  // WORM ATTESTATION (Immutable Sealing)
  // ===================================================================

  async attestArtifact(artifact: QArtifact): Promise<string> {
    const tx: WORMTx = {
      hash: artifact.hash,
      timestamp: Date.now(),
      signature: this.ed25519Sign(artifact.hash),
      artifactType: artifact.type,
      height: this.wormChain.height + 1,
    };

    this.wormChain.blocks.push(tx);
    this.wormChain.height++;

    artifact.wormAnchor = tx.hash;

    console.log(`[WORM] Attested: ${artifact.hash.slice(0, 8)}...`);

    return tx.hash;
  }

  // ===================================================================
  // CRYPTO HELPERS
  // ===================================================================

  private blake3(data: string | Uint8Array): string {
    // Stub: use @noble/hashes in production
    if (typeof data === "string") {
      data = new TextEncoder().encode(data);
    }
    return Array.from(data)
      .map((b) => b.toString(16).padStart(2, "0"))
      .join("")
      .slice(0, 64);
  }

  private ed25519Sign(message: string): string {
    // Stub: use @noble/ed25519 in production
    return this.blake3(message);
  }

  // ===================================================================
  // DETECTION HELPERS
  // ===================================================================

  private detectTerminalBackend(): "WinConsole" | "UnixPTY" | "VirtualTerminal" {
    const ua = navigator.userAgent;
    if (ua.includes("Windows")) return "WinConsole";
    return "UnixPTY";
  }

  private detectGPUBackend(): "Metal" | "Vulkan" | "DirectX12" | "OpenGL" {
    // In real impl, check GPU capabilities
    return "Vulkan";
  }

  // ===================================================================
  // PUBLIC API
  // ===================================================================

  public getArtifactStore(): ArtifactStore {
    return this.artifactStore;
  }

  public getWORMChain(): WORMChain {
    return this.wormChain;
  }

  public getTerminal(): TerminalSession | null {
    return this.terminalSession;
  }

  public getGraniteModel(): GraniteModel | null {
    return this.graniteModel;
  }

  public getWebGPUDevice(): WebGPUDevice | null {
    return this.webgpuDevice;
  }
}

// =====================================================================
// GLOBAL SOVEREIGN IDE INSTANCE
// =====================================================================

export const sovereignIDE = new SovereignIDE();