import { pretty, simpleCopy, simpleEquals } from '../src/utils/helpers';
import { buildAttributeChange } from '../src/models/audit';

let cases = [{
  old: {
    item0: {
      field1: 10,
      field2: ['a', 'b', 'c'],
      field3: {a: 10, b: 20},
    },
    item1: {
      field1: 11,
      field2: ['a', 'b', 'd'],
      field3: {a: 11, b: 21},
    },
    item2: {
      field1: 12,
      field2: ['a', 'b', 'e'],
      field3: {a: 12, b: 22},
    },
  },
  new: {
    item1: {
      field1: 11,
      field2: ['a', 'b', 'd'],
      field3: {a: 11, b: 21},
    },
    item2: {
      field1: 12,
      field2: ['a', 'd', 'e'],
      field3: {a: 14, b: 22},
    },
    item3: {
      field1: 13,
      field2: ['a', 'b', 'f'],
      field3: {a: 13, b: 23},
    },
  },
  expected: {
    item0: null,
    item2: {
      field2: {old: ['a', 'b', 'e'], new: ['a', 'd', 'e']},
      field3: {old: {a: 12, b: 22}, new: {a: 14, b: 22}},
    },
    item3: {
      field1: 13,
      field2: ['a', 'b', 'f'],
      field3: {a: 13, b: 23},
    },
  },
}, {
  old: {
    item0: {
      field1: 10,
      field2: ['a', 'b', 'c'],
      field3: {a: 10, b: 20},
    },
  },
  new: {
    item0: {
      field2: ['a', 'b', 'c'],
      field3: {a: 10, b: 20},
      field1: 10,
    },
  },
  expected: undefined,
}, {
  old: 10,
  new: 20,
  expected: {old: 10, new: 20},
}, {
  old: 10,
  new: 10,
  expected: undefined,
}, {
  old: [1,2,3],
  new: [1,2,3,4],
  expected: {old: [1,2,3], new: [1,2,3,4]},
}, {
  old: [1,2,3],
  new: [1,2,3],
  expected: undefined,
}, {
  old: true,
  new: 'abc',
  expected: {old: true, new: 'abc'},
}];

let success = true;

for (const c of cases) {
  let changes = buildAttributeChange(c.old, c.new)
  if (!simpleEquals(changes, c.expected)) {
    console.log(`'buildAttributeChange()' did not build expected change.`);
    console.log(`old: ${pretty(c.old)}\nnew: ${pretty(c.new)}`);
    console.log(`changes: ${pretty(changes)}\nexpected: ${pretty(c.expected)}`);
    success = false;
  }
}

export default success;