/**
 * tests/analytics/dashboard-model.test.ts
 * ========================================
 * BI-P060 — ANALYTICS DASHBOARD MODEL.
 *
 * The DoD is "a native SIAX dashboard can be reconstructed without Superset",
 * so the central test takes a document that CAME from Superset (it still
 * carries the slice ids in `vendor_ref`), plans it, and then greps the whole
 * plan for any trace of the vendor. A plan that still needs Superset to be
 * understood fails here.
 *
 * The counterfactual matters as much: `vendor-only-widget-is-refused` builds
 * the document that CANNOT be reconstructed — a widget whose only content is a
 * Superset id — and requires the model to refuse it. Without that test the
 * vendor-free assertion would pass trivially for documents nobody could
 * render.
 */
import { describe, expect, it } from 'vitest';
import { SiaxError } from '@/src/platform/errors';
import {
  dashboardDocumentHash,
  parseDashboardDocument,
  planDashboard,
  VISUALIZATION_TYPES,
  type DashboardDocument,
} from '@/src/analytics/dashboards/dashboard-document';

/** A dashboard exported from Superset and rewritten into the canonical model. */
function supersetImportedDocument(): unknown {
  return {
    id: 'dash_sales_overview',
    title: 'Sales overview',
    description: 'Migrated from Superset dashboard 41.',
    version: 1,
    layout: { grid_columns: 12, row_height_px: 40 },
    parameters: [
      {
        name: 'region',
        type: 'enum',
        required: false,
        default_value: 'SE',
        allowed_values: ['SE', 'NO', 'DK'],
      },
      { name: 'since', type: 'date', required: true },
    ],
    filters: [
      {
        filter_id: 'f_region',
        label: 'Region',
        dimension: 'region',
        operator: 'eq',
        default_values: ['{{region}}'],
      },
      {
        filter_id: 'f_channel',
        label: 'Channel',
        dimension: 'channel',
        operator: 'in',
        default_values: ['web'],
      },
      {
        filter_id: 'f_tenant_scope',
        label: 'Business unit',
        dimension: 'business_unit',
        operator: 'eq',
        default_values: ['bu_north'],
        locked: true,
      },
    ],
    widgets: [
      {
        widget_id: 'w_revenue_total',
        title: 'Revenue',
        source: { kind: 'metric', dataset: 'ds_sales', metric: 'revenue' },
        visualization: { type: 'big_number', encoding: { value: 'revenue' } },
        layout: { x: 0, y: 0, w: 3, h: 2 },
        vendor_ref: { system: 'superset', id: 'slice-8812' },
      },
      {
        widget_id: 'w_revenue_by_day',
        title: 'Revenue by day',
        source: {
          kind: 'metric',
          dataset: 'ds_sales',
          metric: 'revenue',
          dimensions: ['order_date'],
          grain: 'day',
        },
        visualization: {
          type: 'line',
          encoding: { x: 'order_date', y: ['revenue'] },
          options: { stacked: false },
        },
        layout: { x: 3, y: 0, w: 9, h: 4 },
        filter_bindings: ['f_region', 'f_tenant_scope'],
        vendor_ref: { system: 'superset', id: 'slice-8813' },
      },
      {
        widget_id: 'w_top_products',
        title: 'Top products',
        source: {
          kind: 'query',
          request: {
            dataset: 'ds_sales',
            metrics: ['revenue', 'orders'],
            dimensions: ['product'],
            filters: [{ dimension: 'status', operator: 'eq', values: ['completed'] }],
            orderBy: [{ ref: 'revenue', direction: 'desc' }],
            limit: 20,
          },
        },
        visualization: { type: 'table', encoding: { x: 'product', y: ['revenue', 'orders'] } },
        layout: { x: 0, y: 4, w: 12, h: 6 },
      },
    ],
    refresh: { mode: 'interval', interval_seconds: 300, max_staleness_seconds: 900 },
    permissions: {
      visibility: 'roles',
      roles: ['analyst', 'sales_lead'],
      required_entitlement: 'bi_dashboards',
    },
    vendor_ref: { system: 'superset', id: 'dashboard-41' },
  };
}

describe('BI-P060 dashboard model — reconstruction without Superset', () => {
  it('plans every widget into a runnable analytics request', () => {
    const doc = parseDashboardDocument(supersetImportedDocument());
    const plan = planDashboard(doc, { parameters: { since: '2026-01-01', region: 'NO' } });

    expect(plan.widgets).toHaveLength(3);
    for (const w of plan.widgets) {
      expect(w.request.dataset).toBe('ds_sales');
      expect(w.request.metrics.length).toBeGreaterThan(0);
      expect(VISUALIZATION_TYPES).toContain(w.visualization.type);
    }
    // The parameter reference was BOUND, not left as a template string.
    const byDay = plan.widgets.find((w) => w.widget_id === 'w_revenue_by_day');
    expect(byDay?.request.filters.find((f) => f.dimension === 'region')?.values).toEqual(['NO']);
    expect(plan.bound_parameters).toEqual({ region: 'NO', since: '2026-01-01' });
  });

  it('the plan contains no vendor identifier anywhere', () => {
    const doc = parseDashboardDocument(supersetImportedDocument());
    const plan = planDashboard(doc, { parameters: { since: '2026-01-01' } });
    const serialized = JSON.stringify(plan).toLowerCase();

    // The detector must be capable of finding one: the document DOES carry
    // these ids, so a grep that finds nothing in the plan means the plan is
    // clean, not that the grep is broken.
    expect(JSON.stringify(doc).toLowerCase()).toContain('slice-8812');

    for (const trace of ['superset', 'slice-8812', 'slice-8813', 'dashboard-41', 'viz_type', 'form_data']) {
      expect(serialized).not.toContain(trace);
    }
  });

  it('vendor-only widget is refused — it is the document that cannot be reconstructed', () => {
    const raw = supersetImportedDocument() as { widgets: unknown[] };
    raw.widgets = [
      {
        widget_id: 'w_mystery',
        title: 'Whatever Superset had',
        source: { kind: 'vendor', system: 'superset', id: 'slice-9001' },
        visualization: { type: 'line', encoding: {} },
        layout: { x: 0, y: 0, w: 4, h: 3 },
      },
    ];
    expect(() => parseDashboardDocument(raw)).toThrow(SiaxError);
    expect(() => parseDashboardDocument(raw)).toThrow(/reconstruct/i);
  });

  it('vendor-native fields are refused at the top level and inside a widget', () => {
    const top = { ...(supersetImportedDocument() as object), position_json: '{}' };
    expect(() => parseDashboardDocument(top)).toThrow(/vendor-native/);

    const raw = supersetImportedDocument() as { widgets: Record<string, unknown>[] };
    raw.widgets[0].viz_type = 'echarts_timeseries';
    expect(() => parseDashboardDocument(raw)).toThrow(/vendor-native/);
  });

  it('a Superset viz_type value is not a SIAX visualization type', () => {
    const raw = supersetImportedDocument() as { widgets: Record<string, unknown>[] };
    raw.widgets[0].visualization = { type: 'echarts_timeseries', encoding: {} };
    expect(() => parseDashboardDocument(raw)).toThrow(/not a SIAX visualization type/);
  });
});

describe('BI-P060 dashboard model — no SQL surface', () => {
  it('a widget cannot carry SQL, however it is spelled', () => {
    for (const key of ['sql', 'query_text', 'statement', 'where', 'expression']) {
      const raw = supersetImportedDocument() as { widgets: Record<string, unknown>[] };
      raw.widgets[0][key] = 'SELECT 1';
      expect(() => parseDashboardDocument(raw), key).toThrow(SiaxError);
    }
  });

  it('a query widget goes through the BI-P016 contract, so tenant selection is impossible', () => {
    const raw = supersetImportedDocument() as { widgets: Record<string, unknown>[] };
    raw.widgets[2].source = {
      kind: 'query',
      request: {
        dataset: 'ds_sales',
        metrics: ['revenue'],
        dimensions: [],
        filters: [],
        tenant_id: 't_victim',
      },
    };
    expect(() => parseDashboardDocument(raw)).toThrow(/does not accept SQL, catalogs, or tenant selection/);
  });

  it('the document itself cannot name a tenant', () => {
    const raw = { ...(supersetImportedDocument() as object), tenant_id: 't_victim' };
    expect(() => parseDashboardDocument(raw)).toThrow(/dashboards do not carry SQL|unknown field/);
  });
});

describe('BI-P060 dashboard model — validation that would otherwise bite at render time', () => {
  it('a widget binding an undeclared filter is refused', () => {
    const raw = supersetImportedDocument() as { widgets: Record<string, unknown>[] };
    raw.widgets[1].filter_bindings = ['f_nonexistent'];
    expect(() => parseDashboardDocument(raw)).toThrow(/undeclared filter/);
  });

  it('a filter defaulting to an undeclared parameter is refused', () => {
    const raw = supersetImportedDocument() as { filters: Record<string, unknown>[] };
    raw.filters[0].default_values = ['{{not_declared}}'];
    expect(() => parseDashboardDocument(raw)).toThrow(/undeclared parameter/);
  });

  it('a widget overflowing the grid is refused', () => {
    const raw = supersetImportedDocument() as { widgets: Record<string, unknown>[] };
    raw.widgets[1].layout = { x: 9, y: 0, w: 6, h: 3 };
    expect(() => parseDashboardDocument(raw)).toThrow(/overflows the 12-column grid/);
  });

  it('an interval refresh with a cron, and a manual refresh with a schedule, are both refused', () => {
    const a = supersetImportedDocument() as Record<string, unknown>;
    a.refresh = { mode: 'interval', interval_seconds: 300, cron: '0 * * * *', max_staleness_seconds: 900 };
    expect(() => parseDashboardDocument(a)).toThrow(/meaningless/);

    const b = supersetImportedDocument() as Record<string, unknown>;
    b.refresh = { mode: 'manual', interval_seconds: 300, max_staleness_seconds: 900 };
    expect(() => parseDashboardDocument(b)).toThrow(/manual/);
  });

  it('visibility "roles" with no roles is refused rather than guessed', () => {
    const raw = supersetImportedDocument() as Record<string, unknown>;
    raw.permissions = { visibility: 'roles', roles: [] };
    expect(() => parseDashboardDocument(raw)).toThrow(/deny all/);
  });

  it('a required parameter that was not supplied fails the plan, not the render', () => {
    const doc = parseDashboardDocument(supersetImportedDocument());
    expect(() => planDashboard(doc, { parameters: {} })).toThrow(/required parameter "since"/);
  });

  it('a locked filter cannot be switched off by a viewer', () => {
    const doc = parseDashboardDocument(supersetImportedDocument());
    expect(() =>
      planDashboard(doc, { parameters: { since: '2026-01-01' }, disabled_filter_ids: ['f_tenant_scope'] }),
    ).toThrow(/locked/);
    // An unlocked one can be, and disappears from the compiled request.
    const plan = planDashboard(doc, {
      parameters: { since: '2026-01-01' },
      disabled_filter_ids: ['f_channel'],
    });
    const table = plan.widgets.find((w) => w.widget_id === 'w_top_products');
    expect(table?.request.filters.map((f) => f.dimension)).not.toContain('channel');
  });

  it('an enum parameter without allowed_values is refused', () => {
    const raw = supersetImportedDocument() as { parameters: Record<string, unknown>[] };
    raw.parameters[0] = { name: 'region', type: 'enum', required: false, default_value: 'SE' };
    expect(() => parseDashboardDocument(raw)).toThrow(/unbounded enum/);
  });
});

/** Rebuild an object graph with every object's keys in reverse order. */
function shuffleKeys(value: unknown): unknown {
  if (Array.isArray(value)) return value.map(shuffleKeys);
  if (value !== null && typeof value === 'object') {
    const out: Record<string, unknown> = {};
    for (const k of Object.keys(value as object).reverse()) {
      out[k] = shuffleKeys((value as Record<string, unknown>)[k]);
    }
    return out;
  }
  return value;
}

describe('BI-P060 dashboard model — canonical hash', () => {
  function parsed(): DashboardDocument {
    return parseDashboardDocument(supersetImportedDocument());
  }

  it('is stable across key order and vendor re-export', () => {
    const a = parsed();
    const b = parsed();
    b.vendor_ref = { system: 'superset', id: 'dashboard-999-after-migration' };
    b.widgets[0].vendor_ref = { system: 'metabase', id: 'card-3' };
    expect(dashboardDocumentHash(b)).toBe(dashboardDocumentHash(a));

    // Key order in the source JSON must not change identity either.
    expect(dashboardDocumentHash(parseDashboardDocument(shuffleKeys(supersetImportedDocument())))).toBe(
      dashboardDocumentHash(a),
    );
  });

  it('changes when meaning changes', () => {
    const base = dashboardDocumentHash(parsed());

    const retitled = parsed();
    retitled.widgets[0].title = 'Net revenue';
    expect(dashboardDocumentHash(retitled)).not.toBe(base);

    const remetric = parsed();
    (remetric.widgets[0].source as { metric: string }).metric = 'revenue_net';
    expect(dashboardDocumentHash(remetric)).not.toBe(base);

    const moved = parsed();
    moved.widgets[1].layout = { x: 3, y: 1, w: 9, h: 4 };
    expect(dashboardDocumentHash(moved)).not.toBe(base);

    const refiltered = parsed();
    refiltered.filters[1].default_values = ['store'];
    expect(dashboardDocumentHash(refiltered)).not.toBe(base);
  });
});