/**
 * handStore.ts - Hand, Trigger, and Approval management store
 *
 * Extracted from gatewayStore.ts for Phase 11 Store Refactoring.
 * Manages OpenFang Hands, Triggers, and Approval workflows.
 */
import { create } from 'zustand';
import type { GatewayClient } from '../lib/gateway-client';

// === Re-exported Types (from gatewayStore for compatibility) ===

export interface HandRequirement {
  description: string;
  met: boolean;
  details?: string;
}

export interface Hand {
  id: string;
  name: string;
  description: string;
  status: 'idle' | 'running' | 'needs_approval' | 'error' | 'unavailable' | 'setup_needed';
  currentRunId?: string;
  requirements_met?: boolean;
  category?: string;
  icon?: string;
  provider?: string;
  model?: string;
  requirements?: HandRequirement[];
  tools?: string[];
  metrics?: string[];
  toolCount?: number;
  metricCount?: number;
}

export interface HandRun {
  runId: string;
  status: string;
  startedAt: string;
  completedAt?: string;
  result?: unknown;
  error?: string;
}

export interface Trigger {
  id: string;
  type: string;
  enabled: boolean;
}

export type ApprovalStatus = 'pending' | 'approved' | 'rejected' | 'expired';

export interface Approval {
  id: string;
  handName: string;
  runId?: string;
  status: ApprovalStatus;
  requestedAt: string;
  requestedBy?: string;
  reason?: string;
  action?: string;
  params?: Record<string, unknown>;
  respondedAt?: string;
  respondedBy?: string;
  responseReason?: string;
}

// === Raw API Response Types (for mapping) ===

interface RawHandRequirement {
  description?: string;
  name?: string;
  met?: boolean;
  satisfied?: boolean;
  details?: string;
  hint?: string;
}

interface RawHandRun {
  runId?: string;
  run_id?: string;
  id?: string;
  status?: string;
  startedAt?: string;
  started_at?: string;
  created_at?: string;
  completedAt?: string;
  completed_at?: string;
  finished_at?: string;
  result?: unknown;
  output?: unknown;
  error?: string;
  message?: string;
}

interface RawApproval {
  id?: string;
  approvalId?: string;
  approval_id?: string;
  type?: string;
  request_type?: string;
  handId?: string;
  hand_id?: string;
  hand_name?: string;
  handName?: string;
  run_id?: string;
  runId?: string;
  requester?: string;
  requested_by?: string;
  requestedAt?: string;
  requested_at?: string;
  status?: string;
  reason?: string;
  description?: string;
  action?: string;
  params?: Record<string, unknown>;
  responded_at?: string;
  respondedAt?: string;
  responded_by?: string;
  respondedBy?: string;
  response_reason?: string;
  responseReason?: string;
}

// === Store Interface ===

interface HandClient {
  listHands: () => Promise<{ hands?: Array<Record<string, unknown>> } | null>;
  getHand: (name: string) => Promise<Record<string, unknown> | null>;
  listHandRuns: (name: string, opts?: { limit?: number; offset?: number }) => Promise<{ runs?: RawHandRun[] } | null>;
  triggerHand: (name: string, params?: Record<string, unknown>) => Promise<{ runId?: string; status?: string } | null>;
  approveHand: (name: string, runId: string, approved: boolean, reason?: string) => Promise<void>;
  cancelHand: (name: string, runId: string) => Promise<void>;
  listTriggers: () => Promise<{ triggers?: Trigger[] } | null>;
  getTrigger: (id: string) => Promise<Trigger | null>;
  createTrigger: (trigger: { type: string; name?: string; enabled?: boolean; config?: Record<string, unknown>; handName?: string; workflowId?: string }) => Promise<{ id?: string } | null>;
  updateTrigger: (id: string, updates: { name?: string; enabled?: boolean; config?: Record<string, unknown>; handName?: string; workflowId?: string }) => Promise<void>;
  deleteTrigger: (id: string) => Promise<void>;
  listApprovals: (status?: ApprovalStatus) => Promise<{ approvals?: RawApproval[] } | null>;
  respondToApproval: (approvalId: string, approved: boolean, reason?: string) => Promise<void>;
}

interface HandStore {
  // State
  hands: Hand[];
  handRuns: Record<string, HandRun[]>;
  triggers: Trigger[];
  approvals: Approval[];
  isLoading: boolean;
  error: string | null;

  // Client reference (injected via setHandStoreClient)
  client: HandClient | null;

  // Actions
  setHandStoreClient: (client: HandClient) => void;
  loadHands: () => Promise<void>;
  getHandDetails: (name: string) => Promise<Hand | undefined>;
  triggerHand: (name: string, params?: Record<string, unknown>) => Promise<HandRun | undefined>;
  loadHandRuns: (name: string, opts?: { limit?: number; offset?: number }) => Promise<HandRun[]>;
  approveHand: (name: string, runId: string, approved: boolean, reason?: string) => Promise<void>;
  cancelHand: (name: string, runId: string) => Promise<void>;
  loadTriggers: () => Promise<void>;
  getTrigger: (id: string) => Promise<Trigger | undefined>;
  createTrigger: (trigger: { type: string; name?: string; enabled?: boolean; config?: Record<string, unknown>; handName?: string; workflowId?: string }) => Promise<Trigger | undefined>;
  updateTrigger: (id: string, updates: { name?: string; enabled?: boolean; config?: Record<string, unknown>; handName?: string; workflowId?: string }) => Promise<Trigger | undefined>;
  deleteTrigger: (id: string) => Promise<void>;
  loadApprovals: (status?: ApprovalStatus) => Promise<void>;
  respondToApproval: (approvalId: string, approved: boolean, reason?: string) => Promise<void>;
  clearError: () => void;
}

export const useHandStore = create<HandStore>((set, get) => ({
  // Initial State
  hands: [],
  handRuns: {},
  triggers: [],
  approvals: [],
  isLoading: false,
  error: null,
  client: null,

  // Client injection
  setHandStoreClient: (client: HandClient) => {
    set({ client });
  },

  // === Hand Actions ===

  loadHands: async () => {
    const client = get().client;
    if (!client) return;

    set({ isLoading: true });
    try {
      const result = await client.listHands();
      const validStatuses = ['idle', 'running', 'needs_approval', 'error', 'unavailable', 'setup_needed'] as const;
      const hands: Hand[] = (result?.hands || []).map((h: Record<string, unknown>) => {
        const status = validStatuses.includes(h.status as Hand['status'])
          ? h.status as Hand['status']
          : (h.requirements_met ? 'idle' : 'setup_needed');
        return {
          id: String(h.id || h.name),
          name: String(h.name || ''),
          description: String(h.description || ''),
          status,
          requirements_met: Boolean(h.requirements_met),
          category: h.category as string | undefined,
          icon: h.icon as string | undefined,
          toolCount: (h.tool_count as number) || ((h.tools as unknown[])?.length),
          metricCount: (h.metric_count as number) || ((h.metrics as unknown[])?.length),
        };
      });
      set({ hands, isLoading: false });
    } catch {
      set({ isLoading: false });
    }
  },

  getHandDetails: async (name: string) => {
    const client = get().client;
    if (!client) return undefined;

    try {
      const result = await client.getHand(name);
      if (!result) return undefined;

      const getStringFromConfig = (key: string): string | undefined => {
        const val = (result.config as Record<string, unknown>)?.[key];
        return typeof val === 'string' ? val : undefined;
      };
      const getArrayFromConfig = (key: string): string[] | undefined => {
        const val = (result.config as Record<string, unknown>)?.[key];
        return Array.isArray(val) ? val : undefined;
      };

      const validStatuses = ['idle', 'running', 'needs_approval', 'error', 'unavailable', 'setup_needed'] as const;
      const status = validStatuses.includes(result.status as Hand['status'])
        ? result.status as Hand['status']
        : (result.requirements_met ? 'idle' : 'setup_needed');

      const hand: Hand = {
        id: String(result.id || result.name || name),
        name: String(result.name || name),
        description: String(result.description || ''),
        status,
        requirements_met: Boolean(result.requirements_met),
        category: result.category as string | undefined,
        icon: result.icon as string | undefined,
        provider: (result.provider as string) || getStringFromConfig('provider'),
        model: (result.model as string) || getStringFromConfig('model'),
        requirements: ((result.requirements as RawHandRequirement[]) || []).map((r) => ({
          description: r.description || r.name || String(r),
          met: r.met ?? r.satisfied ?? true,
          details: r.details || r.hint,
        })),
        tools: (result.tools as string[]) || getArrayFromConfig('tools'),
        metrics: (result.metrics as string[]) || getArrayFromConfig('metrics'),
        toolCount: (result.tool_count as number) || ((result.tools as unknown[])?.length) || 0,
        metricCount: (result.metric_count as number) || ((result.metrics as unknown[])?.length) || 0,
      };

      set(state => ({
        hands: state.hands.map(h => h.name === name ? { ...h, ...hand } : h),
      }));

      return hand;
    } catch {
      return undefined;
    }
  },

  loadHandRuns: async (name: string, opts?: { limit?: number; offset?: number }) => {
    const client = get().client;
    if (!client) return [];

    try {
      const result = await client.listHandRuns(name, opts);
      const runs: HandRun[] = (result?.runs || []).map((r: RawHandRun) => ({
        runId: r.runId || r.run_id || r.id || '',
        status: r.status || 'unknown',
        startedAt: r.startedAt || r.started_at || r.created_at || new Date().toISOString(),
        completedAt: r.completedAt || r.completed_at || r.finished_at,
        result: r.result || r.output,
        error: r.error || r.message,
      }));
      set(state => ({
        handRuns: { ...state.handRuns, [name]: runs },
      }));
      return runs;
    } catch {
      return [];
    }
  },

  triggerHand: async (name: string, params?: Record<string, unknown>) => {
    const client = get().client;
    if (!client) return undefined;

    try {
      const result = await client.triggerHand(name, params);
      if (!result) return undefined;

      const run: HandRun = {
        runId: result.runId || '',
        status: result.status || 'running',
        startedAt: new Date().toISOString(),
      };

      // Add run to local state
      set(state => ({
        handRuns: {
          ...state.handRuns,
          [name]: [run, ...(state.handRuns[name] || [])],
        },
      }));

      // Refresh hands to update status
      await get().loadHands();

      return run;
    } catch (err: unknown) {
      set({ error: err instanceof Error ? err.message : String(err) });
      return undefined;
    }
  },

  approveHand: async (name: string, runId: string, approved: boolean, reason?: string) => {
    const client = get().client;
    if (!client) return;

    try {
      await client.approveHand(name, runId, approved, reason);
      await get().loadHands();
    } catch (err: unknown) {
      set({ error: err instanceof Error ? err.message : String(err) });
      throw err;
    }
  },

  cancelHand: async (name: string, runId: string) => {
    const client = get().client;
    if (!client) return;

    try {
      await client.cancelHand(name, runId);
      await get().loadHands();
    } catch (err: unknown) {
      set({ error: err instanceof Error ? err.message : String(err) });
      throw err;
    }
  },

  // === Trigger Actions ===

  loadTriggers: async () => {
    const client = get().client;
    if (!client) return;

    try {
      const result = await client.listTriggers();
      set({ triggers: result?.triggers || [] });
    } catch {
      // ignore if triggers API not available
    }
  },

  getTrigger: async (id: string) => {
    const client = get().client;
    if (!client) return undefined;

    try {
      const result = await client.getTrigger(id);
      if (!result) return undefined;
      return {
        id: result.id,
        type: result.type,
        enabled: result.enabled,
      } as Trigger;
    } catch (err: unknown) {
      set({ error: err instanceof Error ? err.message : String(err) });
      return undefined;
    }
  },

  createTrigger: async (trigger) => {
    const client = get().client;
    if (!client) return undefined;

    try {
      const result = await client.createTrigger(trigger);
      if (!result?.id) return undefined;
      await get().loadTriggers();
      return get().triggers.find(t => t.id === result.id);
    } catch (err: unknown) {
      set({ error: err instanceof Error ? err.message : String(err) });
      return undefined;
    }
  },

  updateTrigger: async (id: string, updates) => {
    const client = get().client;
    if (!client) return undefined;

    try {
      await client.updateTrigger(id, updates);
      set(state => ({
        triggers: state.triggers.map(t =>
          t.id === id ? { ...t, ...updates } : t
        ),
      }));
      return get().triggers.find(t => t.id === id);
    } catch (err: unknown) {
      set({ error: err instanceof Error ? err.message : String(err) });
      return undefined;
    }
  },

  deleteTrigger: async (id: string) => {
    const client = get().client;
    if (!client) return;

    try {
      await client.deleteTrigger(id);
      set(state => ({
        triggers: state.triggers.filter(t => t.id !== id),
      }));
    } catch (err: unknown) {
      set({ error: err instanceof Error ? err.message : String(err) });
      throw err;
    }
  },

  // === Approval Actions ===

  loadApprovals: async (status?: ApprovalStatus) => {
    const client = get().client;
    if (!client) return;

    try {
      const result = await client.listApprovals(status);
      const approvals: Approval[] = (result?.approvals || []).map((a: RawApproval) => ({
        id: a.id || a.approval_id || a.approvalId || '',
        handName: a.hand_name || a.handName || '',
        runId: a.run_id || a.runId,
        status: (a.status || 'pending') as ApprovalStatus,
        requestedAt: a.requested_at || a.requestedAt || new Date().toISOString(),
        requestedBy: a.requested_by || a.requester,
        reason: a.reason || a.description,
        action: a.action || 'execute',
        params: a.params,
        respondedAt: a.responded_at || a.respondedAt,
        respondedBy: a.responded_by || a.respondedBy,
        responseReason: a.response_reason || a.responseReason,
      }));
      set({ approvals });
    } catch {
      // ignore if approvals API not available
    }
  },

  respondToApproval: async (approvalId: string, approved: boolean, reason?: string) => {
    const client = get().client;
    if (!client) return;

    try {
      await client.respondToApproval(approvalId, approved, reason);
      await get().loadApprovals();
    } catch (err: unknown) {
      set({ error: err instanceof Error ? err.message : String(err) });
      throw err;
    }
  },

  clearError: () => set({ error: null }),
}));

/**
 * Helper to create a HandClient adapter from a GatewayClient.
 * Use this to inject the client into handStore.
 */
export function createHandClientFromGateway(client: GatewayClient): HandClient {
  return {
    listHands: () => client.listHands(),
    getHand: (name) => client.getHand(name),
    listHandRuns: (name, opts) => client.listHandRuns(name, opts),
    triggerHand: (name, params) => client.triggerHand(name, params),
    approveHand: (name, runId, approved, reason) => client.approveHand(name, runId, approved, reason),
    cancelHand: (name, runId) => client.cancelHand(name, runId),
    listTriggers: () => client.listTriggers(),
    getTrigger: (id) => client.getTrigger(id),
    createTrigger: (trigger) => client.createTrigger(trigger),
    updateTrigger: (id, updates) => client.updateTrigger(id, updates),
    deleteTrigger: (id) => client.deleteTrigger(id),
    listApprovals: (status) => client.listApprovals(status),
    respondToApproval: (approvalId, approved, reason) => client.respondToApproval(approvalId, approved, reason),
  };
}