import type { ModelInfo, SavingsData, ServerInfo } from '../types';

// ---------------------------------------------------------------------------
// Supabase config — safe to embed (RLS protects writes)
// ---------------------------------------------------------------------------

const SUPABASE_URL = import.meta.env.VITE_SUPABASE_URL || 'https://mtbtgpwzrbostweaanpr.supabase.co';
const SUPABASE_ANON_KEY = import.meta.env.VITE_SUPABASE_ANON_KEY || 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6Im10YnRncHd6cmJvc3R3ZWFhbnByIiwicm9sZSI6ImFub24iLCJpYXQiOjE3NzMxODk0OTQsImV4cCI6MjA4ODc2NTQ5NH0._xMlqCfljtXpwPj54H-ghxfLFO-jiq4W2WhpU8vVL1c';

declare global {
  interface Window {
    __TAURI_INTERNALS__?: unknown;
  }
}

export const isTauri = () => typeof window !== 'undefined' && !!window.__TAURI_INTERNALS__;

// Cached API base URL fetched from the Tauri backend at startup.
// This avoids hardcoding the port — the Rust backend is the single
// source of truth for JARVIS_PORT.
let _tauriApiBase: string | null = null;

/** Pre-fetch the API base URL from the Tauri backend (call once at init). */
export async function initApiBase(): Promise<void> {
  if (!isTauri()) return;
  try {
    const { invoke } = await import('@tauri-apps/api/core');
    _tauriApiBase = await invoke<string>('get_api_base');
  } catch {
    // Command may not exist on older builds; fall through to default.
  }
}

const DESKTOP_API_FALLBACK = 'http://127.0.0.1:8222';

const getSettingsApiUrl = (): string => {
  try {
    const raw = localStorage.getItem('openjarvis-settings');
    if (raw) {
      const parsed = JSON.parse(raw);
      if (parsed.apiUrl) return parsed.apiUrl.replace(/\/+$/, '');
    }
  } catch {}
  return '';
};

export const getBase = (): string => {
  const settingsUrl = getSettingsApiUrl();
  if (settingsUrl) return settingsUrl;
  if (import.meta.env.VITE_API_URL) return import.meta.env.VITE_API_URL;
  if (isTauri()) return _tauriApiBase || DESKTOP_API_FALLBACK;
  return '';
};

async function tauriInvoke<T>(command: string, args: Record<string, unknown> = {}): Promise<T> {
  const { invoke } = await import('@tauri-apps/api/core');
  const apiUrl = getBase();
  return invoke<T>(command, { apiUrl, ...args });
}

// ---------------------------------------------------------------------------
// Setup status (desktop only)
// ---------------------------------------------------------------------------

export interface SetupStatus {
  phase: string;
  detail: string;
  ollama_ready: boolean;
  server_ready: boolean;
  model_ready: boolean;
  error: string | null;
}

export async function getSetupStatus(): Promise<SetupStatus | null> {
  if (!isTauri()) return null;
  try {
    const { invoke } = await import('@tauri-apps/api/core');
    return await invoke<SetupStatus>('get_setup_status');
  } catch {
    return null;
  }
}

// ---------------------------------------------------------------------------
// API functions
// ---------------------------------------------------------------------------

export async function fetchModels(): Promise<ModelInfo[]> {
  if (isTauri()) {
    try {
      const result = await tauriInvoke<{ data?: ModelInfo[] }>('fetch_models');
      return result?.data || [];
    } catch {
      // Fall through to fetch
    }
  }
  const res = await fetch(`${getBase()}/v1/models`);
  if (!res.ok) throw new Error(`Failed to fetch models: ${res.status}`);
  const data = await res.json();
  return data.data || [];
}

export async function fetchRecommendedModel(): Promise<{ model: string; reason: string }> {
  const res = await fetch(`${getBase()}/v1/recommended-model`);
  if (!res.ok) return { model: '', reason: 'Failed to fetch' };
  return res.json();
}

export async function pullModel(modelName: string): Promise<void> {
  // In Tauri, go through the Rust backend directly (avoids CORS / timeout
  // issues with long model downloads via fetch).
  if (isTauri()) {
    try {
      const { invoke } = await import('@tauri-apps/api/core');
      await invoke('pull_ollama_model', { modelName });
      return;
    } catch (e: any) {
      throw new Error(e?.message || e || 'Download failed');
    }
  }
  const res = await fetch(`${getBase()}/v1/models/pull`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ model: modelName }),
  });
  if (!res.ok) {
    const detail = await res.text().catch(() => res.statusText);
    throw new Error(`Failed to pull model: ${detail}`);
  }
}

export async function deleteModel(modelName: string): Promise<void> {
  if (isTauri()) {
    try {
      const { invoke } = await import('@tauri-apps/api/core');
      await invoke('delete_ollama_model', { modelName });
      return;
    } catch (e: any) {
      throw new Error(e?.message || e || 'Delete failed');
    }
  }
  const res = await fetch(`${getBase()}/v1/models/${encodeURIComponent(modelName)}`, {
    method: 'DELETE',
  });
  if (!res.ok) {
    const detail = await res.text().catch(() => res.statusText);
    throw new Error(`Failed to delete model: ${detail}`);
  }
}

const _CLOUD_PREFIXES = ['gpt-', 'o1-', 'o3-', 'o4-', 'claude-', 'gemini-', 'openrouter/'];

export async function preloadModel(modelName: string): Promise<void> {
  // Cloud models don't need Ollama preloading
  if (_CLOUD_PREFIXES.some(p => modelName.startsWith(p))) {
    return;
  }
  // Trigger Ollama to load the model into memory (empty prompt, no generation).
  const ollamaUrl = 'http://127.0.0.1:11434';
  try {
    const res = await fetch(`${ollamaUrl}/api/generate`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ model: modelName, prompt: '', keep_alive: '5m' }),
      signal: AbortSignal.timeout(120_000),
    });
    if (!res.ok) throw new Error(`Preload failed: ${res.status}`);
  } catch (e: any) {
    if (e.name === 'TimeoutError') throw new Error('Model load timed out (120s)');
    throw e;
  }
}

export async function fetchSavings(): Promise<SavingsData> {
  const res = await fetch(`${getBase()}/v1/savings`);
  if (!res.ok) throw new Error(`Failed to fetch savings: ${res.status}`);
  return res.json();
}

export async function fetchServerInfo(): Promise<ServerInfo> {
  const res = await fetch(`${getBase()}/v1/info`);
  if (!res.ok) throw new Error(`Failed to fetch server info: ${res.status}`);
  return res.json();
}

export async function checkHealth(): Promise<boolean> {
  if (isTauri()) {
    try {
      await tauriInvoke('check_health', { apiUrl: getBase() });
      return true;
    } catch {
      return false;
    }
  }
  try {
    const res = await fetch(`${getBase()}/health`);
    return res.ok;
  } catch {
    return false;
  }
}

export async function fetchEnergy(): Promise<unknown> {
  if (isTauri()) {
    try {
      return await tauriInvoke('fetch_energy', { apiUrl: getBase() });
    } catch {}
  }
  const res = await fetch(`${getBase()}/v1/telemetry/energy`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  return res.json();
}

export async function fetchTelemetry(): Promise<unknown> {
  if (isTauri()) {
    try {
      return await tauriInvoke('fetch_telemetry', { apiUrl: getBase() });
    } catch {}
  }
  const res = await fetch(`${getBase()}/v1/telemetry/stats`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  return res.json();
}

export async function fetchTraces(limit: number = 50): Promise<unknown> {
  if (isTauri()) {
    try {
      return await tauriInvoke('fetch_traces', { apiUrl: getBase(), limit });
    } catch {}
  }
  const res = await fetch(`${getBase()}/v1/traces?limit=${limit}`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  return res.json();
}

// ---------------------------------------------------------------------------
// Speech
// ---------------------------------------------------------------------------

export interface TranscriptionResult {
  text: string;
  language: string | null;
  confidence: number | null;
  duration_seconds: number;
}

export interface SpeechHealth {
  available: boolean;
  backend?: string;
  reason?: string;
}

export async function transcribeAudio(audioBlob: Blob, filename = 'recording.webm'): Promise<TranscriptionResult> {
  if (isTauri()) {
    try {
      const buffer = await audioBlob.arrayBuffer();
      return await tauriInvoke<TranscriptionResult>('transcribe_audio', {
        audioData: Array.from(new Uint8Array(buffer)),
        filename,
      });
    } catch {
      // Fall through to fetch
    }
  }
  const formData = new FormData();
  formData.append('file', audioBlob, filename);
  const res = await fetch(`${getBase()}/v1/speech/transcribe`, {
    method: 'POST',
    body: formData,
  });
  if (!res.ok) throw new Error(`Transcription failed: ${res.status}`);
  return res.json();
}

export async function fetchSpeechHealth(): Promise<SpeechHealth> {
  if (isTauri()) {
    try {
      return await tauriInvoke<SpeechHealth>('speech_health');
    } catch {
      return { available: false };
    }
  }
  const res = await fetch(`${getBase()}/v1/speech/health`);
  if (!res.ok) return { available: false };
  return res.json();
}

// ---------------------------------------------------------------------------
// Agent Manager
// ---------------------------------------------------------------------------

export interface ManagedAgent {
  id: string;
  name: string;
  agent_type: string;
  config: Record<string, unknown>;
  status: 'idle' | 'running' | 'paused' | 'error' | 'archived' | 'needs_attention' | 'budget_exceeded' | 'stalled';
  summary_memory: string;
  created_at: number;
  updated_at: number;
  // Runtime stats
  total_runs?: number;
  total_cost?: number;
  total_tokens?: number;
  input_tokens?: number;
  output_tokens?: number;
  last_run_at?: number | null;
  // Schedule
  schedule_type?: string;
  schedule_value?: string;
  // Budget
  budget?: number;
  // Learning
  learning_enabled?: boolean;
  // Live progress
  current_activity?: string;
}

export interface AgentTask {
  id: string;
  agent_id: string;
  description: string;
  status: 'pending' | 'active' | 'completed' | 'failed';
  progress: Record<string, unknown>;
  findings: unknown[];
  created_at: number;
}

export interface ChannelBinding {
  id: string;
  agent_id: string;
  channel_type: string;
  config: Record<string, unknown>;
  session_id: string;
  routing_mode: string;
}

export interface AgentTemplate {
  id: string;
  name: string;
  description: string;
  source: 'built-in' | 'user';
  agent_type: string;
  [key: string]: unknown;
}

export interface AgentMessage {
  id: string;
  agent_id: string;
  direction: 'user_to_agent' | 'agent_to_user';
  content: string;
  mode: 'immediate' | 'queued';
  status: 'pending' | 'delivered' | 'responded';
  created_at: number;
}

export async function fetchManagedAgents(): Promise<ManagedAgent[]> {
  const res = await fetch(`${getBase()}/v1/managed-agents`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  const data = await res.json();
  return data.agents || [];
}

export async function fetchManagedAgent(agentId: string): Promise<ManagedAgent> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  return res.json();
}

export async function createManagedAgent(body: {
  name: string;
  agent_type?: string;
  template_id?: string;
  config?: Record<string, unknown>;
}): Promise<ManagedAgent> {
  const res = await fetch(`${getBase()}/v1/managed-agents`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(body),
  });
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  return res.json();
}

export async function updateManagedAgent(
  agentId: string,
  body: Partial<{ name: string; agent_type: string; config: Record<string, unknown> }>,
): Promise<ManagedAgent> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}`, {
    method: 'PATCH',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(body),
  });
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  return res.json();
}

export async function deleteManagedAgent(agentId: string): Promise<void> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}`, { method: 'DELETE' });
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
}

export async function pauseManagedAgent(agentId: string): Promise<void> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/pause`, { method: 'POST' });
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
}

export async function resumeManagedAgent(agentId: string): Promise<void> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/resume`, { method: 'POST' });
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
}

export async function fetchAgentTasks(agentId: string): Promise<AgentTask[]> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/tasks`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  const data = await res.json();
  return data.tasks || [];
}

export async function createAgentTask(agentId: string, description: string): Promise<AgentTask> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/tasks`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ description }),
  });
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  return res.json();
}

export async function fetchAgentChannels(agentId: string): Promise<ChannelBinding[]> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/channels`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  const data = await res.json();
  return data.bindings || [];
}

export async function fetchTemplates(): Promise<AgentTemplate[]> {
  const res = await fetch(`${getBase()}/v1/templates`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  const data = await res.json();
  return data.templates || [];
}

export async function runManagedAgent(agentId: string): Promise<void> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/run`, { method: 'POST' });
  if (!res.ok) {
    const body = await res.json().catch(() => ({ detail: res.statusText }));
    throw new Error(body.detail || `Failed: ${res.status}`);
  }
}

export async function recoverManagedAgent(agentId: string): Promise<{ recovered: boolean; checkpoint: unknown }> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/recover`, { method: 'POST' });
  if (!res.ok) {
    const body = await res.json().catch(() => ({ detail: res.statusText }));
    throw new Error(body.detail || `Failed: ${res.status}`);
  }
  return res.json();
}

export async function fetchAgentState(agentId: string): Promise<{
  agent: ManagedAgent;
  tasks: AgentTask[];
  channels: ChannelBinding[];
  messages: AgentMessage[];
  checkpoint: unknown;
}> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/state`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  return res.json();
}

export async function sendAgentMessage(agentId: string, content: string, mode: 'immediate' | 'queued' = 'queued'): Promise<AgentMessage> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/messages`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ content, mode }),
  });
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  return res.json();
}

export async function fetchAgentMessages(agentId: string): Promise<AgentMessage[]> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/messages`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  const data = await res.json();
  return data.messages || [];
}

export async function fetchErrorAgents(): Promise<ManagedAgent[]> {
  const res = await fetch(`${getBase()}/v1/agents/errors`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  const data = await res.json();
  return data.agents || [];
}

// ---------------------------------------------------------------------------
// Agent Learning + Traces
// ---------------------------------------------------------------------------

export interface LearningLogEntry {
  id: string;
  agent_id: string;
  event_type: string;
  description: string;
  data: Record<string, unknown>;
  created_at: number;
}

export interface AgentTrace {
  id: string;
  outcome: string;
  duration: number;
  started_at: number;
  steps: number;
  error_message?: string;
  metadata?: Record<string, unknown>;
}

export interface ToolInfo {
  name: string;
  description: string;
  category: string;
  source: 'tool' | 'channel';
  requires_credentials: boolean;
  credential_keys: string[];
  configured: boolean;
}

export async function fetchAvailableTools(): Promise<ToolInfo[]> {
  const res = await fetch(`${getBase()}/v1/tools`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  const data = await res.json();
  return data.tools || [];
}

export async function saveToolCredentials(
  toolName: string,
  credentials: Record<string, string>,
): Promise<void> {
  const res = await fetch(`${getBase()}/v1/tools/${toolName}/credentials`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(credentials),
  });
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
}

export interface AgentTraceDetail {
  id: string;
  agent: string;
  outcome: string;
  duration: number;
  started_at: number;
  steps: Array<{
    step_type: string;
    input: unknown;
    output: string;
    duration: number;
    metadata: Record<string, unknown>;
  }>;
}

export async function fetchLearningLog(agentId: string): Promise<LearningLogEntry[]> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/learning`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  const data = await res.json();
  return data.learning_log || [];
}

export async function triggerLearning(agentId: string): Promise<void> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/learning/run`, { method: 'POST' });
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
}

export async function fetchAgentTraces(agentId: string, limit = 20): Promise<AgentTrace[]> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/traces?limit=${limit}`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  const data = await res.json();
  return data.traces || [];
}

export async function fetchAgentTrace(agentId: string, traceId: string): Promise<AgentTraceDetail> {
  const res = await fetch(`${getBase()}/v1/managed-agents/${agentId}/traces/${traceId}`);
  if (!res.ok) throw new Error(`Failed: ${res.status}`);
  return res.json();
}

// ---------------------------------------------------------------------------
// Leaderboard savings submission (Supabase)
// ---------------------------------------------------------------------------

export interface SavingsSubmission {
  anon_id: string;
  display_name: string;
  email: string;
  total_calls: number;
  total_tokens: number;
  dollar_savings: number;
  energy_wh_saved: number;
  flops_saved: number;
  token_counting_version?: number;
}

export async function submitSavings(data: SavingsSubmission): Promise<boolean> {
  if (!SUPABASE_URL || !SUPABASE_ANON_KEY) return false;
  try {
    const res = await fetch(
      `${SUPABASE_URL}/rest/v1/savings_entries?on_conflict=anon_id`,
      {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          apikey: SUPABASE_ANON_KEY,
          Authorization: `Bearer ${SUPABASE_ANON_KEY}`,
          Prefer: 'resolution=merge-duplicates',
        },
        body: JSON.stringify(data),
      },
    );
    return res.ok || res.status === 201 || res.status === 200;
  } catch {
    return false;
  }
}