/**
 * Platform API hooks — Phase I.6/I.7 (I-ONB, I-DASH, I-COST, I-USE).
 *
 * Provides hooks for the setup wizard (onboarding) and the platform dashboard
 * (agent status, workflow stats, search metrics, knowledge coverage, cost
 * tracking, system health). Backend routes may not be wired yet, so all hooks
 * degrade gracefully to an "unavailable" state instead of throwing.
 */

import { useQuery } from '@tanstack/react-query';
import { apiGet } from './client';

// ── Onboarding ──────────────────────────────────────────────────────────────

export interface OnboardingStepStatus {
  completed: boolean;
  required: boolean;
}

export interface OnboardingStatus {
  steps: Record<string, OnboardingStepStatus>;
  progress_pct: number;
}

export interface OnboardingGuideStep {
  id: string;
  title: string;
  description: string;
  icon?: string;
  action_url?: string;
}

export interface OnboardingGuide {
  steps: OnboardingGuideStep[];
}

export function useOnboardingStatus() {
  return useQuery({
    queryKey: ['onboardingStatus'],
    queryFn: () => apiGet<OnboardingStatus>('/onboarding/status'),
    staleTime: 60 * 1000,
    retry: false,
  });
}

export function useOnboardingGuide() {
  return useQuery({
    queryKey: ['onboardingGuide'],
    queryFn: () => apiGet<OnboardingGuide>('/onboarding/guide'),
    staleTime: 60 * 1000,
    retry: false,
  });
}

// ── Platform dashboard ──────────────────────────────────────────────────────

export interface PlatformDashboardData {
  agents?: {
    active_agents?: number;
    total_runs?: number;
    recent_runs_7d?: number;
    error?: string;
  };
  workflows?: {
    active_workflows?: number;
    running_instances?: number;
    completed_instances?: number;
    error?: string;
  };
  search?: {
    total_queries?: number;
    avg_latency_ms?: number;
    error?: string;
  };
  knowledge?: {
    wiki_articles?: number;
    coverage_pct?: number;
    error?: string;
  };
  workstream?: {
    messages?: number;
    error?: string;
  };
  system_health?: {
    redis?: string;
    status?: string;
    error?: string;
  };
  generated_at?: string;
}

export function usePlatformDashboard() {
  return useQuery({
    queryKey: ['platformDashboard'],
    queryFn: () => apiGet<PlatformDashboardData>('/dashboard/platform'),
    staleTime: 60 * 1000,
    retry: false,
  });
}

// ── Cost tracking ───────────────────────────────────────────────────────────

export interface CostDashboardData {
  period_days?: number;
  total_cost_usd?: number;
  by_agent?: Record<string, { cost_usd: number; runs: number }>;
  budget?: {
    monthly_limit_usd?: number;
    utilization_pct?: number;
  };
  error?: string;
}

export function useCostDashboard(days = 30) {
  return useQuery({
    queryKey: ['costDashboard', days],
    queryFn: () => apiGet<CostDashboardData>(`/dashboard/cost?days=${days}`),
    staleTime: 60 * 1000,
    retry: false,
  });
}

// ── Usage analytics ─────────────────────────────────────────────────────────

export interface UsageAnalyticsData {
  period_days?: number;
  agent_runs?: {
    total?: number;
    completed?: number;
    failed?: number;
    success_rate?: number;
    error?: string;
  };
  workflow_executions?: {
    total?: number;
    completed?: number;
    error?: string;
  };
  search_queries?: {
    total?: number;
    error?: string;
  };
  error?: string;
}

export function useUsageAnalytics(days = 30) {
  return useQuery({
    queryKey: ['usageAnalytics', days],
    queryFn: () => apiGet<UsageAnalyticsData>(`/dashboard/usage?days=${days}`),
    staleTime: 60 * 1000,
    retry: false,
  });
}