import {CellValue} from 'app/common/DocActions';
import {InfoView} from 'app/common/GranularAccessClause';
import {GristObjCode} from 'app/plugin/GristData';
import {CompiledPredicateFormula, compilePredicateFormula} from 'app/common/PredicateFormula';
import {makeExceptionalDocSession} from 'app/server/lib/DocSession';
import {User} from 'app/server/lib/GranularAccess';
import {assert} from 'chai';
import {createDocTools} from 'test/server/docTools';
import * as testUtils from 'test/server/testUtils';

describe('ACLFormula', function() {
  this.timeout(10000);

  // Turn off logging for this test, and restore afterwards.
  testUtils.setTmpLogLevel('error');

  const docTools = createDocTools({ persistAcrossCases: true });
  const fakeSession = makeExceptionalDocSession('system');

  function getInfoView(row: Record<string, CellValue>): InfoView {
    return {
      get: (colId: string) => row[colId],
      toJSON: () => row,
    };
  }

  const V = getInfoView;    // A shortcut.

  type SetAndCompile = (aclFormula: string) => Promise<CompiledPredicateFormula>;
  let setAndCompile: SetAndCompile;

  before(async function () {
    const docName = 'docdata1';
    const activeDoc1 = await docTools.createDoc(docName);

    const resourceRef = (await activeDoc1.applyUserActions(fakeSession,
      [['AddRecord', '_grist_ACLResources', null, {tableId: '*', colIds: '*'}]])).retValues[0];
    const ruleRef = (await activeDoc1.applyUserActions(fakeSession,
      [['AddRecord', '_grist_ACLRules', null, {resource: resourceRef}]])).retValues[0];

    setAndCompile = async function setAndCompile(aclFormula) {
      await activeDoc1.applyUserActions(fakeSession, [['UpdateRecord', '_grist_ACLRules', ruleRef, {aclFormula}]]);
      const {tableData} = await activeDoc1.fetchQuery(
        fakeSession, {tableId: '_grist_ACLRules', filters: {id: [ruleRef]}});
      assert(tableData[3].aclFormulaParsed, "Expected aclFormulaParsed to be populated");
      const parsedFormula = String(tableData[3].aclFormulaParsed[0]);
      return compilePredicateFormula(JSON.parse(parsedFormula));
    };
  });

  it('should handle a comparison', async function() {
    const compiled = await setAndCompile("user.Email == 'X@'");
    assert.equal(compiled({user: new User({Email: 'X@'})}), true);
    assert.equal(compiled({user: new User({Email: 'Y@'})}), false);
    assert.equal(compiled({user: new User({Email: 'X'}), rec: V({Email: 'Y@'})}), false);
    assert.equal(compiled({user: new User({Name: 'X@'})}), false);
  });

  it('should handle the "in" operator', async function () {
    const compiled = await setAndCompile("user.Role in ('editors', 'owners')");
    assert.equal(compiled({user: new User({Role: 'editors'})}), true);
    assert.equal(compiled({user: new User({Role: 'owners'})}), true);
    assert.equal(compiled({user: new User({Role: 'viewers'})}), false);
    assert.equal(compiled({user: new User({Role: null})}), false);
    assert.equal(compiled({user: new User({})}), false);
  });

  it('should handle the "not in" operator', async function () {
    const compiled = await setAndCompile("user.Role not in ('editors', 'owners')");
    assert.equal(compiled({user: new User({Role: 'editors'})}), false);
    assert.equal(compiled({user: new User({Role: 'owners'})}), false);
    assert.equal(compiled({user: new User({Role: 'viewers'})}), true);
    assert.equal(compiled({user: new User({Role: null})}), true);
    assert.equal(compiled({user: new User({})}), true);
  });

  [{
    op: 'in'
  }, {
    op: 'not in'
  }].forEach(ctx => {
    it(`should handle the "${ctx.op}" operator with a string RHS to check if substring exist`, async function() {
      const compiled = await setAndCompile(`user.Name ${ctx.op} 'FooBar'`);
      assert.equal(compiled({user: new User({Name: 'FooBar'})}), ctx.op === 'in');
      assert.equal(compiled({user: new User({Name: 'Foo'})}), ctx.op === 'in');
      assert.equal(compiled({user: new User({Name: 'Bar'})}), ctx.op === 'in');
      assert.equal(compiled({user: new User({Name: 'bar'})}), ctx.op === 'not in');
      assert.equal(compiled({user: new User({Name: 'qux'})}), ctx.op === 'not in');
      assert.equal(compiled({user: new User({Name: null})}), ctx.op === 'not in');
    });
  });

  it('should handle the "and" operator', async function () {
    const compiled = await setAndCompile("rec.office == 'Seattle' and user.email in ['sally@', 'xie@']");
    assert.throws(() => compiled({user: new User({email: 'xie@'})}), /Missing row data 'rec'/);
    assert.equal(compiled({user: new User({email: 'xie@'}), rec: V({})}), false);
    assert.equal(compiled({user: new User({email: 'xie@'}), rec: V({office: null})}), false);
    assert.equal(compiled({user: new User({email: 'xie@home'}), rec: V({office: 'Seattle'})}), false);
    assert.equal(compiled({user: new User({email: 'xie@'}), rec: V({office: 'Seattle'})}), true);
    assert.equal(compiled({user: new User({email: 'sally@'}), rec: V({office: 'Seattle'})}), true);
    assert.equal(compiled({user: new User({email: 'sally@'}), rec: V({office: 'Chicago'})}), false);
    assert.equal(compiled({user: new User({email: null}), rec: V({office: null})}), false);
    assert.equal(compiled({user: new User({}), rec: V({})}), false);
  });

  it('should handle the "or" operator', async function () {
    const compiled = await setAndCompile('user.Email=="X@" or user.Email is None');
    assert.equal(compiled({user: new User({Email: 'X@'})}), true);
    assert.equal(compiled({user: new User({})}), true);
    assert.equal(compiled({user: new User({Email: 'Y@'})}), false);
  });

  it('should handle a complex combination of operators', async function () {

    // This is not particularly meaningful, but involves more combinations.
    const compiled = await setAndCompile(
      "user.IsAdmin or rec.assigned is None or (not newRec.HasDuplicates and rec.StatusIndex <= newRec.StatusIndex)");
    assert.equal(compiled({user: new User({IsAdmin: true})}), true);
    assert.equal(compiled({user: new User({IsAdmin: 17})}), true);
    assert.throws(() => compiled({user: new User({IsAdmin: 0.0})}), /Missing row data 'rec'/);
    assert.throws(
      () => compiled({user: new User({IsAdmin: 0.0}), rec: V({assigned: true})}),
      /Missing row data 'newRec'/
    );
    assert.equal(compiled({user: new User({IsAdmin: 0.0}), rec: V({}), newRec: V({})}), false);
    assert.equal(compiled({user: new User({IsAdmin: false}), rec: V({assigned: 0}), newRec: V({})}), false);
    assert.equal(compiled({user: new User({IsAdmin: false}), rec: V({assigned: null})}), true);
    assert.equal(compiled({user: new User({IsAdmin: true}), rec: V({assigned: 'never'})}), true);
    assert.equal(compiled({user: new User({IsAdmin: false}), rec: V({assigned: 'None'}),
      newRec: V({HasDuplicates: 1})}), false);
    assert.equal(compiled({user: new User({IsAdmin: false}), rec: V({assigned: 1, StatusIndex: 1}),
      newRec: V({HasDuplicates: false, StatusIndex: 1})}), true);
    assert.equal(compiled({user: new User({IsAdmin: false}), rec: V({assigned: 1, StatusIndex: 1}),
      newRec: V({HasDuplicates: false, StatusIndex: 17})}), true);
    assert.equal(compiled({user: new User({IsAdmin: false}), rec: V({assigned: 1, StatusIndex: 1}),
      newRec: V({StatusIndex: 17})}), true);
    assert.equal(compiled({user: new User({IsAdmin: false}), rec: V({assigned: 1, StatusIndex: 2}),
      newRec: V({HasDuplicates: false, StatusIndex: 1})}), false);
    assert.equal(compiled({user: new User({IsAdmin: false}), rec: V({assigned: 1, StatusIndex: 1}),
      newRec: V({HasDuplicates: true, StatusIndex: 17})}), false);
  });

  it('should handle arithmetic tests', async function () {
    const compiled = await setAndCompile(
      "rec.A <= rec.B + 1 and rec.A >= rec.B - 1 and rec.A < rec.C * 2.5 and rec.A > rec.C / 2.5 and rec.A % 2 != 0");
    assert.equal(compiled({user: new User({}), rec: V({A: 3, B: 3, C: 3})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: 3, B: 4, C: 3})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: 3, B: 2, C: 3})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: 3, B: 4.001, C: 3})}), false);
    assert.equal(compiled({user: new User({}), rec: V({A: 3, B: 1.999, C: 3})}), false);
    assert.equal(compiled({user: new User({}), rec: V({A: 6, B: 6, C: 6})}), false);     // A can't be even.
    // C of 3 establishes the range for A of (1.2 - 7.5).
    assert.equal(compiled({user: new User({}), rec: V({A: 1.2, B: 1, C: 3})}), false);
    assert.equal(compiled({user: new User({}), rec: V({A: 1.3, B: 1, C: 3})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: 7.4, B: 7, C: 3})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: 7.5, B: 7, C: 3})}), false);
  });

  it('should handle "is" and "is not" operators', async function () {
    const compiled = await setAndCompile(
      "rec.A is True or rec.B is not False");
    assert.equal(compiled({user: new User({}), rec: V({A: true})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: 2})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: 2, B: false})}), false);
    assert.equal(compiled({user: new User({}), rec: V({A: 2, B: null})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: 0, B: null})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: null, B: true})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: null, B: 2})}), true);
    assert.equal(compiled({user: new User({}), rec: V({A: null, B: false})}), false);
    assert.equal(compiled({user: new User({}), rec: V({A: null, B: 0})}), true);
  });

  it('should handle nested attribute lookups', async function () {
    const compiled = await setAndCompile('user.office.city == "New York"');
    assert.equal(compiled({user: new User({office: V({city: "New York"})})}), true);
    assert.equal(compiled({user: new User({office: V({city: "Boston"})})}), false);
    assert.equal(compiled({user: new User({office: V({city: null})})}), false);
    assert.throws(() => compiled({user: new User({})}), /No value for 'user.office'/);
    assert.equal(compiled({user: new User({office: 5})}), false);
    assert.throws(() => compiled({user: new User({office: null})}), /No value for 'user.office'/);
  });

  it('should handle "in" and "not in" when RHS is nullish', async function() {
    let compiled = await setAndCompile('user.Email in rec.emails');
    const user = new User({Email: 'X@'});
    assert.equal(compiled({user, rec: V({emails: null})}), false);
    assert.equal(compiled({user, rec: V({unrelated: 'X@'})}), false);
    assert.equal(compiled({user, rec: V({emails: 'X@'})}), true);
    compiled = await setAndCompile('user.Email not in rec.emails');
    assert.equal(compiled({user, rec: V({emails: null})}), true);
    assert.equal(compiled({user, rec: V({unrelated: 'X@'})}), true);
    assert.equal(compiled({user, rec: V({emails: 'X@'})}), false);
    compiled = await setAndCompile('(user.Email in rec.emails) == (user.Name in rec.emails)');
    assert.equal(compiled({user, rec: V({emails: null})}), true);
    assert.equal(compiled({user, rec: V({emails: 'X@'})}), false);
  });

  it('should decode cell values so that "in" is safe to use with lists', async function () {
    const user = new User({Email: 'L'});

    // A previous bug meant that the above user would always pass this formula,
    // because an encoded list always starts with the 'L' type code,
    // and encoded cell values were used in evaluating formulas.
    let compiled = await setAndCompile('user.Email in rec.emails');
    assert.equal(compiled({user, rec: V({emails: [GristObjCode.List]})}), false);
    assert.equal(compiled({user, rec: V({emails: [GristObjCode.List, "X"]})}), false);
    assert.equal(compiled({user, rec: V({emails: [GristObjCode.List, "L"]})}), true);

    // This should never happen (nothing should be encoded as an empty list),
    // this just shows what would happen.
    assert.throws(() => compiled({user, rec: V({emails: [] as any})}),
      /\.includes is not a function/);

    // List literals aren't decoded and work as expected.
    compiled = await setAndCompile('user.Email in []');
    assert.equal(compiled({user, rec: V({})}), false);

    compiled = await setAndCompile('user.Email in ["X"]');
    assert.equal(compiled({user, rec: V({})}), false);

    compiled = await setAndCompile('user.Email in ["L"]');
    assert.equal(compiled({user, rec: V({})}), true);
  });

  it('should allow comparing dates', async function () {
    const user = new User({});

    const compiled = await setAndCompile('rec.date1 < rec.date2');
    for (let i = 0; i < 150; i++) {
      const date1 = i * 10000000000;
      for (let j = 0; j < 150; j++) {
        const date2 = j * 10000000000;
        const rec = V({
          date1: [GristObjCode.Date, date1],
          date2: [GristObjCode.Date, date2],
        });
        assert.equal(compiled({user, rec}), date1 < date2);
      }
    }
  });
});