export const previewKey = 'openclasp.preview.v1';

export const previewSession = {

  user: {

    sub: 'local-preview',

    name: 'Local preview',

    email: 'preview@localhost',

  },

};

export type DashboardData = {

  agents: Record<string, any>[];

  projects: Record<string, any>[];

  installations: Record<string, any>[];

  setupRequests: Record<string, any>[];

  publications: Record<string, any>[];

  interactions: Record<string, any>[];

  federatedInteractions: Record<string, any>[];

  liveSessions: Record<string, any>[];

  hostedThreads: Record<string, any>[];

  events: Record<string, any>[];

  conflicts: Record<string, any>[];

  receipts: Record<string, any>[];

  profiles: Record<string, any>[];

  runtimes: Record<string, any>[];

  accessTokens: Record<string, any>[];

};

export type Settings = {

  displayName: string;

  contributionEnabled: boolean;

  retentionDays: number;

  evidenceSharing: 'never' | 'ask' | 'contract_only';

  rawConversationsStored: false;

};

export const defaultPreviewSettings: Settings = {

  displayName: 'Local operator',

  contributionEnabled: false,

  retentionDays: 30,

  evidenceSharing: 'ask',

  rawConversationsStored: false,

};

const ago = (minutes: number) => new Date(Date.now() - minutes * 60_000).toISOString();

const ahead = (minutes: number) => new Date(Date.now() + minutes * 60_000).toISOString();

export function createPreviewData(): DashboardData {

  return {

    projects: [

      { projectId: 'proj_ops', name: 'Operations', createdAt: ago(21 * 24 * 60) },

      { projectId: 'proj_research', name: 'Research', createdAt: ago(12 * 24 * 60) },

    ],

    agents: [

      {

        agentId: 'agent_atlas',

        projectId: 'proj_research',

        name: 'Atlas Research',

        description: 'Literature review and planning',

        framework: 'Claude',

        agentVersion: '1.4.2',

        agentMode: 'persistent_runtime',

        a2aEndpoint: 'https://atlas.example.com/a2a',

        autoPublish: true,

        autoAcceptPolicy: 'safe_matching',

        autoAcceptTaskCategories: ['research', 'planning'],

        capabilities: ['research', 'planning', 'summarization'],

        limitations: ['no payments'],

        identityMode: 'oauth_installation',

        status: 'active',

        createdAt: ago(12 * 24 * 60),

        updatedAt: ago(8),

        presence: { status: 'online', lastSeenAt: ago(1) },

      },

      {

        agentId: 'agent_harbor',

        projectId: 'proj_ops',

        name: 'Harbor Ops',

        description: 'Incident triage and runbooks',

        framework: 'GPT',

        agentVersion: '2.1.0',

        agentMode: 'temporary_chat',

        autoPublish: false,

        autoAcceptPolicy: 'off',

        autoAcceptTaskCategories: [],

        capabilities: ['ops', 'triage'],

        limitations: ['no production writes'],

        identityMode: 'oauth_installation',

        status: 'active',

        createdAt: ago(21 * 24 * 60),

        updatedAt: ago(180),

        presence: { status: 'offline', lastSeenAt: ago(180) },

      },

    ],

    installations: [

      {

        installationId: 'inst_atlas',

        clientId: 'mcp_atlas',

        agentId: 'agent_atlas',

        projectId: 'proj_research',

        connectedAt: ago(12 * 24 * 60),

        updatedAt: ago(8),

      },

    ],

    setupRequests: [

      {

        requestId: 'setup_lumen',

        clientId: 'mcp_lumen',

        action: 'connect',

        status: 'pending',

        agentName: 'Lumen Writer',

        projectName: 'Content',

        framework: 'Claude',

        agentVersion: '0.9.0',

        autoPublish: true,

        autoAcceptPolicy: 'safe_matching',

        autoAcceptTaskCategories: ['writing', 'editing'],

        capabilities: ['writing', 'editing', 'research'],

        limitations: ['no outbound email'],

        requestedAt: ago(18),

      },

    ],

    publications: [{ agentId: 'agent_atlas', published: true, updatedAt: ago(40) }],

    interactions: [

      {

        interactionId: 'ix_local_brief',

        agentId: 'agent_atlas',

        status: 'completed',

        createdAt: ago(240),

        completedAt: ago(220),

      },

    ],

    federatedInteractions: [

      {

        interactionId: 'ix_shared_review',

        initiatorAgentId: 'agent_peer_nova',

        responderAgentId: 'agent_atlas',

        status: 'pending',

        termsHash: '7f3c91a0b2e84d11c6aa09f1d3e8b470',

        createdAt: ago(26),

        contract: { purpose: 'Review a research brief for scope and sources' },

      },

      {

        interactionId: 'ix_shared_ops',

        initiatorAgentId: 'agent_atlas',

        responderAgentId: 'agent_peer_keel',

        status: 'active',

        termsHash: '12ab44c0e91f77d0aa3310bc44ee9012',

        createdAt: ago(90),

        contract: { purpose: 'Share a sanitized incident timeline' },

        acceptances: {

          agent_peer_keel: { method: 'policy_auto_accept' },

        },

      },

    ],

    liveSessions: [

      {

        interactionId: 'ix_shared_ops',

        initiatorAgentId: 'agent_atlas',

        responderAgentId: 'agent_peer_keel',

        status: 'active',

        createdAt: ago(88),

        activatedAt: ago(87),

        expiresAt: ahead(12),

      },

    ],

    hostedThreads: [],

    events: [

      {

        eventId: 'evt_1',

        eventType: 'interaction_started',

        agentId: 'agent_atlas',

        interactionId: 'ix_shared_ops',

        timestamp: ago(88),

        visibility: 'participants',

      },

      {

        eventId: 'evt_2',

        eventType: 'policy_warning',

        agentId: 'agent_harbor',

        interactionId: 'ix_local_brief',

        timestamp: ago(200),

        visibility: 'owner',

      },

      {

        eventId: 'evt_3',

        eventType: 'claim_checked',

        agentId: 'agent_atlas',

        interactionId: 'ix_local_brief',

        timestamp: ago(230),

        visibility: 'participants',

      },

      {

        eventId: 'evt_4',

        eventType: 'session_activated',

        agentId: 'agent_atlas',

        interactionId: 'ix_shared_ops',

        timestamp: ago(87),

        visibility: 'participants',

      },

    ],

    conflicts: [

      {

        conflictId: 'dsp_1',

        interactionId: 'ix_local_brief',

        status: 'open',

        createdAt: ago(190),

      },

    ],

    receipts: [

      {

        receiptId: 'rcpt_1',

        interactionId: 'ix_local_brief',

        agentId: 'agent_atlas',

        outcome: 'success',

        completedAt: ago(220),

      },

    ],

    profiles: [

      {

        agentId: 'agent_atlas',

        taskCategory: 'research',

        agentVersion: '1.4.2',

        sampleSize: 14,

        completion: 0.92,

        scope: 0.84,

        evidence: 0.88,

        communication: 0.79,

        deadline: 0.9,

      },

      {

        agentId: 'agent_harbor',

        taskCategory: 'ops',

        agentVersion: '2.1.0',

        sampleSize: 6,

        completion: 0.71,

        scope: 0.66,

        evidence: 0.58,

        communication: 0.74,

        deadline: 0.62,

      },

    ],

    runtimes: [

      {

        agentId: 'agent_atlas',

        endpoint: 'https://atlas.example.com/openclasp',

        a2aEndpoint: 'https://atlas.example.com/a2a',

        status: 'verified',

        verifiedAt: ago(40),

      },

    ],

    accessTokens: [],

  };

}

export function applyPreviewRequest(

  data: DashboardData,

  settings: Settings,

  path: string,

  init?: RequestInit,

): { data: DashboardData; settings: Settings; result: unknown } {

  const method = (init?.method ?? 'GET').toUpperCase();

  const body = init?.body ? (JSON.parse(String(init.body)) as Record<string, unknown>) : {};

  if (path === '/v0.1/dashboard' && method === 'GET') return { data, settings, result: data };

  if (path === '/v0.1/settings' && method === 'GET') return { data, settings, result: settings };

  if (path === '/v0.1/settings' && method === 'PUT') {

    const next = {

      ...settings,

      ...body,

      rawConversationsStored: false as const,

    } as Settings;

    return { data, settings: next, result: next };

  }

  const automation = path.match(/^\/v0\.1\/agents\/([^/]+)\/automation$/);

  if (automation && method === 'PUT') {

    const agentId = decodeURIComponent(automation[1] ?? '');

    const next = {

      ...data,

      agents: data.agents.map((agent) =>

        agent.agentId === agentId

          ? {

              ...agent,

              autoPublish: Boolean(body.autoPublish),

              autoAcceptPolicy: body.autoAcceptPolicy,

              autoAcceptTaskCategories: body.autoAcceptTaskCategories,

            }

          : agent,

      ),

      publications: body.autoPublish

        ? [

            ...data.publications.filter((item) => item.agentId !== agentId),

            { agentId, published: true, updatedAt: new Date().toISOString() },

          ]

        : data.publications.filter((item) => item.agentId !== agentId),

    };

    return { data: next, settings, result: { ok: true } };

  }

  const runtime = path.match(/^\/v0\.1\/agents\/([^/]+)\/runtime$/);

  if (runtime && method === 'PUT') {

    const agentId = decodeURIComponent(runtime[1] ?? '');

    const endpoint = String(body.endpoint ?? '');

    const record = {

      agentId,

      endpoint,

      a2aEndpoint: endpoint,

      status: 'verified',

      verifiedAt: new Date().toISOString(),

    };

    return {

      data: {

        ...data,

        runtimes: [...data.runtimes.filter((item) => item.agentId !== agentId), record],

      },

      settings,

      result: record,

    };

  }

  const tokenCollection = path.match(/^\/v0\.1\/agents\/([^/]+)\/access-tokens$/);

  if (tokenCollection && method === 'POST') {

    const agentId = decodeURIComponent(tokenCollection[1] ?? '');

    const tokenId = crypto.randomUUID().replaceAll('-', '').slice(0, 16);

    const createdAt = new Date();

    const expiresInDays = Number(body.expiresInDays ?? 365);

    const record = {

      tokenId,

      agentId,

      name: String(body.name ?? 'Hosted provider'),

      scopes: ['mcp:access'],

      createdAt: createdAt.toISOString(),

      expiresAt: new Date(createdAt.getTime() + expiresInDays * 86_400_000).toISOString(),

    };

    return {

      data: { ...data, accessTokens: [record, ...data.accessTokens] },

      settings,

      result: {

        ...record,

        token: `oc_at_${tokenId}.preview_agent_access_token_secret_not_for_production`,

      },

    };

  }

  const tokenItem = path.match(/^\/v0\.1\/agents\/([^/]+)\/access-tokens\/([^/]+)$/);

  if (tokenItem && method === 'DELETE') {

    const tokenId = decodeURIComponent(tokenItem[2] ?? '');

    return {

      data: {

        ...data,

        accessTokens: data.accessTokens.map((token) =>

          token.tokenId === tokenId ? { ...token, revokedAt: new Date().toISOString() } : token,

        ),

      },

      settings,

      result: { tokenId, revokedAt: new Date().toISOString() },

    };

  }

  const agentDelete = path.match(/^\/v0\.1\/agents\/([^/]+)$/);

  if (agentDelete && method === 'DELETE') {

    const agentId = decodeURIComponent(agentDelete[1] ?? '');

    return {

      data: {

        ...data,

        agents: data.agents.filter((item) => item.agentId !== agentId),

        publications: data.publications.filter((item) => item.agentId !== agentId),

        runtimes: data.runtimes.filter((item) => item.agentId !== agentId),

        installations: data.installations.filter((item) => item.agentId !== agentId),

        accessTokens: data.accessTokens.filter((item) => item.agentId !== agentId),

      },

      settings,

      result: { agentId, deleted: true },

    };

  }

  if (runtime && method === 'DELETE') {

    const agentId = decodeURIComponent(runtime[1] ?? '');

    return {

      data: {

        ...data,

        runtimes: data.runtimes.filter((item) => item.agentId !== agentId),

      },

      settings,

      result: { agentId, status: 'disabled' },

    };

  }

  const federated = path.match(/^\/v0\.1\/federated-interactions\/([^/]+)\/respond$/);

  if (federated && method === 'POST') {

    const interactionId = decodeURIComponent(federated[1] ?? '');

    const decision = body.decision === 'accept' ? 'active' : 'rejected';

    return {

      data: {

        ...data,

        federatedInteractions: data.federatedInteractions.map((item) =>

          item.interactionId === interactionId ? { ...item, status: decision } : item,

        ),

      },

      settings,

      result: { ok: true },

    };

  }

  const onboarding = path.match(/^\/v0\.1\/onboarding\/([^/]+)\/(approve|reject)$/);

  if (onboarding && method === 'POST') {

    const requestId = decodeURIComponent(onboarding[1] ?? '');

    const decision = onboarding[2] === 'approve' ? 'approved' : 'rejected';

    return {

      data: {

        ...data,

        setupRequests: data.setupRequests.map((item) =>

          item.requestId === requestId

            ? { ...item, status: decision, decidedAt: new Date().toISOString() }

            : item,

        ),

      },

      settings,

      result: { ok: true },

    };

  }

  throw new Error('Preview cannot perform this action');

}

export function isPreviewActive() {

  return import.meta.env.DEV && sessionStorage.getItem(previewKey) === '1';

}

export function enablePreview() {

  sessionStorage.setItem(previewKey, '1');

}

export function disablePreview() {

  sessionStorage.removeItem(previewKey);

}