/*
  The MIT License

  Copyright (c) 2017-2019 EclipseSource Munich
  https://github.com/eclipsesource/jsonforms

  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:

  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
*/
import test from 'ava';
import AJV from 'ajv';
import RefParser from 'json-schema-ref-parser';
import { coreReducer } from '../../src/reducers';
import { init, update, updateErrors } from '../../src/actions';
import { JsonSchema } from '../../src/models/jsonSchema';
import {
  errorAt,
  JsonFormsCore,
  sanitizeErrors,
  subErrorsAt
} from '../../src/reducers/core';

import { createAjv, updateCore } from '../../src';
import { setSchema, setValidationMode } from '../../lib';
import { cloneDeep } from 'lodash';

const createRefParserOptions = (
  encoding = 'testEncoding'
): RefParser.Options => {
  const parserOptions: RefParser.ParserOptions & { encoding?: string } = {
    encoding
  };
  const myOptions: RefParser.Options = {
    parse: {
      text: parserOptions
    }
  };
  return myOptions;
};

test('core reducer should support v7', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const after = coreReducer(
    undefined,
    init(
      {
        foo: 'baz'
      },
      schema
    )
  );
  t.is(after.errors.length, 1);
});

test('core reducer - no previous state - init without options should create new ajv and no ref parser options object', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const after = coreReducer(undefined, init({}, schema, undefined, undefined));
  t.true(after.ajv !== undefined);
  t.true(after.refParserOptions === undefined);
});

test('core reducer - no previous state - init with ajv as options object should use it', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const myAjv = new AJV({
    errorDataPath: 'mypath'
  });
  const after = coreReducer(undefined, init({}, schema, undefined, myAjv));
  t.deepEqual(after.ajv, myAjv);
  t.true(after.refParserOptions === undefined);
});

test('core reducer - no previous state - init with empty options object', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const after = coreReducer(undefined, init({}, schema, undefined, {}));
  t.true(after.ajv !== undefined);
  t.true(after.refParserOptions === undefined);
});

test('core reducer - no previous state - init with options object with ajv', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const myAjv = new AJV({
    errorDataPath: 'mypath'
  });
  const after = coreReducer(
    undefined,
    init({}, schema, undefined, {
      ajv: myAjv
    })
  );
  t.deepEqual(after.ajv, myAjv);
  t.true(after.refParserOptions === undefined);
});

test('core reducer - no previous state - init with options object with ref parser options', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const myOptions = createRefParserOptions();
  const after = coreReducer(
    undefined,
    init({}, schema, undefined, {
      refParserOptions: myOptions
    })
  );
  t.true(after.ajv !== undefined);
  t.deepEqual(after.refParserOptions, myOptions);
});

test('core reducer - no previous state - init with options object with ajv and ref parser options', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const myAjv = new AJV({
    errorDataPath: 'mypath'
  });
  const myOptions = createRefParserOptions();
  const after = coreReducer(
    undefined,
    init({}, schema, undefined, {
      ajv: myAjv,
      refParserOptions: myOptions
    })
  );
  t.deepEqual(after.ajv, myAjv);
  t.deepEqual(after.refParserOptions, myOptions);
});

test('core reducer - previous state - init without options should keep previous objects', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const myAjv = new AJV({
    errorDataPath: 'mypath'
  });
  const myOptions = createRefParserOptions();
  const after = coreReducer(
    {
      data: {},
      schema: {},
      uischema: {
        type: 'Label'
      },
      ajv: myAjv,
      refParserOptions: myOptions
    },
    init({}, schema)
  );
  t.deepEqual(after.ajv, myAjv);
  t.deepEqual(after.refParserOptions, myOptions);
});

test('core reducer - previous state - init with ajv options object should overwrite ajv and keep ref parser options', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const previousAjv = new AJV({
    errorDataPath: 'mypath'
  });
  const newAjv = new AJV({
    errorDataPath: 'newajv'
  });
  const myOptions = createRefParserOptions();
  const after = coreReducer(
    {
      data: {},
      schema: {},
      uischema: {
        type: 'Label'
      },
      ajv: previousAjv,
      refParserOptions: myOptions
    },
    init({}, schema, undefined, newAjv)
  );
  t.deepEqual(after.ajv, newAjv);
  t.deepEqual(after.refParserOptions, myOptions);
});

test('core reducer - previous state - init with options with ajv should overwrite ajv and keep ref parser options', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const previousAjv = new AJV({
    errorDataPath: 'mypath'
  });
  const newAjv = new AJV({
    errorDataPath: 'newajv'
  });
  const myOptions = createRefParserOptions();
  const after = coreReducer(
    {
      data: {},
      schema: {},
      uischema: {
        type: 'Label'
      },
      ajv: previousAjv,
      refParserOptions: myOptions
    },
    init({}, schema, undefined, {
      ajv: newAjv
    })
  );
  t.deepEqual(after.ajv, newAjv);
  t.deepEqual(after.refParserOptions, myOptions);
});

test('core reducer - previous state - init with options with ref parser options should overwrite ref parser options and keep ajv', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const myAjv = new AJV({
    errorDataPath: 'mypath'
  });
  const previousOptions = createRefParserOptions();
  const newOptions = createRefParserOptions('newEncoding');
  const after = coreReducer(
    {
      data: {},
      schema: {},
      uischema: {
        type: 'Label'
      },
      ajv: myAjv,
      refParserOptions: previousOptions
    },
    init({}, schema, undefined, {
      refParserOptions: newOptions
    })
  );
  t.deepEqual(after.ajv, myAjv);
  t.deepEqual(after.refParserOptions, newOptions);
});

test('core reducer - previous state - init with both options should overwrite both', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const previousAjv = new AJV({
    errorDataPath: 'mypath'
  });
  const newAjv = new AJV({
    errorDataPath: 'newajv'
  });
  const previousOptions = createRefParserOptions();
  const newOptions = createRefParserOptions('newEncoding');
  const after = coreReducer(
    {
      data: {},
      schema: {},
      uischema: {
        type: 'Label'
      },
      ajv: previousAjv,
      refParserOptions: previousOptions
    },
    init({}, schema, undefined, {
      ajv: newAjv,
      refParserOptions: newOptions
    })
  );
  t.deepEqual(after.ajv, newAjv);
  t.deepEqual(after.refParserOptions, newOptions);
});

test('core reducer - previous state - init with empty options should not overwrite', t => {
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string',
        const: 'bar'
      }
    }
  };
  const myAjv = new AJV({
    errorDataPath: 'mypath'
  });
  const myOptions = createRefParserOptions();
  const after = coreReducer(
    {
      data: {},
      schema: {},
      uischema: {
        type: 'Label'
      },
      ajv: myAjv,
      refParserOptions: myOptions
    },
    init({}, schema, undefined, {})
  );
  t.deepEqual(after.ajv, myAjv);
  t.deepEqual(after.refParserOptions, myOptions);
});

test('core reducer - previous state - init with undefined data should not change data', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      },
      color: {
        type: 'string'
      }
    }
  };

  const after = coreReducer(
    {
      data: undefined,
      schema: {},
      uischema: {
        type: 'Label'
      }
    },
    init(undefined, schema, undefined, {})
  );
  t.deepEqual(after.data, undefined);
});

test('core reducer - previous state - init schema with id', t => {
  const schema: JsonSchema = {
    $id: 'https://www.jsonforms.io/example.json',
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };
  const updatedSchema = cloneDeep(schema);
  updatedSchema.properties.animal.minLength = 5;

  const before: JsonFormsCore = coreReducer(
    undefined,
    init(undefined, schema, undefined, undefined)
  );

  const after: JsonFormsCore = coreReducer(
    before,
    init(undefined, updatedSchema, before.uischema, undefined)
  );
  t.is(after.schema.properties.animal.minLength, 5);
});

test('core reducer - update - undefined data should update for given path', t => {
  const schema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string'
      }
    }
  };

  const before: JsonFormsCore = {
    data: undefined,
    schema: schema,
    uischema: {
      type: 'Label'
    },
    errors: [],
    validator: new AJV().compile(schema)
  };

  const after = coreReducer(
    before,
    update('foo', _ => {
      return 'bar';
    })
  );

  t.deepEqual(after, { ...before, data: { foo: 'bar'} });
});

test('core reducer - update - path is undefined state should remain same', t => {
  const before: JsonFormsCore = {
    data: {
      foo: 'bar'
    },
    schema: {
      type: 'object',
      properties: {
        foo: {
          type: 'string',
          const: 'bar'
        }
      }
    },
    uischema: {
      type: 'Label'
    }
  };

  const after = coreReducer(
    before,
    update(undefined, _ => {
      return { foo: 'xyz' };
    })
  );

  t.deepEqual(before, after);
});

test('core reducer - update - path is null state should remain same', t => {
  const before: JsonFormsCore = {
    data: {
      foo: 'bar'
    },
    schema: {
      type: 'object',
      properties: {
        foo: {
          type: 'string',
          const: 'bar'
        }
      }
    },
    uischema: {
      type: 'Label'
    }
  };

  const after = coreReducer(
    before,
    update(null, _ => {
      return { foo: 'xyz' };
    })
  );

  t.deepEqual(before, after);
});

test('core reducer - update - empty path should update root state', t => {
  const schema = {
    type: 'object',
    properties: {
      foo: {
        type: 'string'
      }
    }
  };

  const before: JsonFormsCore = {
    data: {
      foo: 'bar'
    },
    errors: [],
    schema,
    uischema: {
      type: 'Label'
    },
    validator: new AJV().compile(schema)
  };

  const after = coreReducer(
    before,
    update('', _ => {
      return { foo: 'xyz' };
    })
  );

  t.deepEqual(after, { ...before, data: { foo: 'xyz' } });
});

test('core reducer - update - providing a path should update data only belonging to path', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      },
      color: {
        type: 'string'
      }
    }
  };

  const before: JsonFormsCore = {
    data: {
      animal: 'Sloth',
      color: 'Blue'
    },
    errors: [],
    schema,
    uischema: {
      type: 'Label'
    },
    validator: new AJV().compile(schema)
  };

  const after = coreReducer(
    before,
    update('color', _ => {
      return 'Green';
    })
  );

  t.deepEqual(after, { ...before, data: { animal: 'Sloth', color: 'Green' } });
});

test('core reducer - update - should update errors', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      },
      color: {
        type: 'string',
        enum: ['Blue', 'Green']
      }
    }
  };

  const before: JsonFormsCore = {
    data: {
      animal: 'Sloth',
      color: 'Blue'
    },
    errors: [],
    schema,
    uischema: {
      type: 'Label'
    },
    validator: new AJV().compile(schema)
  };

  const after = coreReducer(
    before,
    update('color', _ => {
      return 'Yellow';
    })
  );

  t.deepEqual(after, {
    ...before,
    data: { animal: 'Sloth', color: 'Yellow' },
    errors: [
      {
        dataPath: 'color',
        keyword: 'enum',
        message: 'should be equal to one of the allowed values',
        params: {
          allowedValues: ['Blue', 'Green']
        },
        schemaPath: '#/properties/color/enum'
      }
    ]
  });
});

test('core reducer - updateErrors - should update errors with empty list', t => {
  const before: JsonFormsCore = {
    data: {},
    schema: {},
    uischema: undefined
  };

  const after = coreReducer(before, updateErrors([]));
  t.deepEqual(after, { ...before, errors: [] });
});

test('core reducer - updateErrors - should update errors with error', t => {
  const before: JsonFormsCore = {
    data: {},
    schema: {},
    uischema: undefined,
    errors: []
  };

  const error = {
    dataPath: 'color',
    keyword: 'enum',
    message: 'should be equal to one of the allowed values',
    params: {
      allowedValues: ['Blue', 'Green']
    },
    schemaPath: '#/properties/color/enum'
  };

  const after = coreReducer(before, updateErrors([error]));
  t.deepEqual(after, { ...before, errors: [error] });
});

test('core reducer - updateErrors - should update errors with undefined', t => {
  const before: JsonFormsCore = {
    data: {},
    schema: {},
    uischema: undefined,
    errors: []
  };

  const after = coreReducer(before, updateErrors(undefined));
  t.deepEqual(after, { ...before, errors: undefined });
});

test('errorAt filters enum', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      bar: {
        type: 'string',
        enum: ['f', 'b']
      },
      foo: {
        type: 'string',
        enum: ['f', 'b']
      }
    }
  };
  const data = { foo: '', bar: '' };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = errorAt('foo', schema.properties.foo)(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('errorAt filters required', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      bar: {
        type: 'string',
        enum: ['f', 'b']
      },
      foo: {
        type: 'string',
        enum: ['f', 'b']
      }
    },
    required: ['bar', 'foo']
  };
  const data = {};
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = errorAt('foo', schema.properties.foo)(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('errorAt filters array minItems', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      numbers: {
        title: 'Numbers',
        type: 'array',
        items: {
          title: 'Type',
          type: 'string',
          enum: ['One', 'Two', 'Three']
        },
        minItems: 1
      },
      colours: {
        title: 'Colours',
        type: 'array',
        items: {
          title: 'Type',
          type: 'string',
          enum: ['Red', 'Green', 'Blue']
        },
        minItems: 1
      }
    }
  };
  const data: { colours: string[]; numbers: string[] } = {
    colours: [],
    numbers: []
  };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = errorAt('colours', schema.properties.colours)(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('errorAt filters array inner value', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      numbers: {
        title: 'Numbers',
        type: 'array',
        items: {
          title: 'Type',
          type: 'string',
          enum: ['One', 'Two', 'Three']
        },
        minItems: 1
      },
      colours: {
        title: 'Colours',
        type: 'array',
        items: {
          title: 'Type',
          type: 'string',
          enum: ['Red', 'Green', 'Blue']
        },
        minItems: 1
      }
    }
  };
  const data: { colours: string[]; numbers: string[] } = {
    colours: ['Foo'],
    numbers: ['Bar']
  };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = errorAt('colours.0', schema.properties.colours)(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('errorAt filters oneOf simple', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      coloursOrNumbers: {
        oneOf: [
          {
            title: 'Numbers',
            type: 'string',
            enum: ['One', 'Two', 'Three']
          },
          {
            title: 'Colours',
            type: 'string',
            enum: ['Red', 'Green', 'Blue']
          }
        ]
      }
    }
  };
  const data: { coloursOrNumbers: string } = { coloursOrNumbers: 'Foo' };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = errorAt(
    'coloursOrNumbers',
    schema.properties.coloursOrNumbers.oneOf[1]
  )(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('errorAt filters anyOf simple', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      coloursOrNumbers: {
        anyOf: [
          {
            title: 'Numbers',
            type: 'string',
            enum: ['One', 'Two', 'Three']
          },
          {
            title: 'Colours',
            type: 'string',
            enum: ['Red', 'Green', 'Blue']
          }
        ]
      }
    }
  };
  const data: { coloursOrNumbers: string } = { coloursOrNumbers: 'Foo' };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = errorAt(
    'coloursOrNumbers',
    schema.properties.coloursOrNumbers.anyOf[1]
  )(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('errorAt filters oneOf objects', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      coloursOrNumbers: {
        oneOf: [
          {
            title: 'Numbers',
            type: 'object',
            properties: {
              number: {
                title: 'Type',
                type: 'string',
                enum: ['One', 'Two', 'Three']
              }
            },
            additionalProperties: false
          },
          {
            title: 'Colours',
            type: 'object',
            properties: {
              colour: {
                title: 'Type',
                type: 'string',
                enum: ['Red', 'Green', 'Blue']
              }
            },
            additionalProperties: false
          }
        ]
      }
    },
    additionalProperties: false
  };
  const data = { coloursOrNumbers: { colour: 'Foo' } };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = errorAt(
    'coloursOrNumbers.colour',
    schema.properties.coloursOrNumbers.oneOf[1].properties.colour
  )(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('errorAt filters oneOf objects same properties', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      coloursOrNumbers: {
        oneOf: [
          {
            title: 'Numbers',
            type: 'object',
            properties: {
              colourOrNumber: {
                title: 'Type',
                type: 'string',
                enum: ['One', 'Two', 'Three']
              }
            }
          },
          {
            title: 'Colours',
            type: 'object',
            properties: {
              colourOrNumber: {
                title: 'Type',
                type: 'string',
                enum: ['Red', 'Green', 'Blue']
              }
            }
          }
        ]
      }
    }
  };
  const data = { coloursOrNumbers: { colourOrNumber: 'Foo' } };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = errorAt(
    'coloursOrNumbers.colourOrNumber',
    schema.properties.coloursOrNumbers.oneOf[1].properties.colourOrNumber
  )(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('errorAt filters oneOf array', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      coloursOrNumbers: {
        oneOf: [
          {
            title: 'Numbers',
            type: 'array',
            items: {
              title: 'Type',
              type: 'string',
              enum: ['One', 'Two', 'Three']
            },
            minItems: 1
          },
          {
            title: 'Colours',
            type: 'array',
            items: {
              title: 'Type',
              type: 'string',
              enum: ['Red', 'Green', 'Blue']
            },
            minItems: 1
          }
        ]
      }
    }
  };
  const data: { coloursOrNumbers: string[] } = { coloursOrNumbers: [] };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = errorAt(
    'coloursOrNumbers',
    schema.properties.coloursOrNumbers.oneOf[1]
  )(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('errorAt filters oneOf array inner', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      coloursOrNumbers: {
        oneOf: [
          {
            title: 'Numbers',
            type: 'array',
            items: {
              title: 'Type',
              type: 'string',
              enum: ['One', 'Two', 'Three']
            },
            minItems: 1
          },
          {
            title: 'Colours',
            type: 'array',
            items: {
              title: 'Type',
              type: 'string',
              enum: ['Red', 'Green', 'Blue']
            },
            minItems: 1
          }
        ]
      }
    }
  };
  const data: { coloursOrNumbers: string[] } = { coloursOrNumbers: ['Foo'] };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = errorAt(
    'coloursOrNumbers',
    schema.properties.coloursOrNumbers.oneOf[1]
  )(state);
  t.is(filtered.length, 0);
});

test('subErrorsAt filters array inner', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      numbers: {
        title: 'Numbers',
        type: 'array',
        items: {
          title: 'Type',
          type: 'string',
          enum: ['One', 'Two', 'Three']
        },
        minItems: 1
      },
      colours: {
        title: 'Colours',
        type: 'array',
        items: {
          title: 'Type',
          type: 'string',
          enum: ['Red', 'Green', 'Blue']
        },
        minItems: 1
      }
    }
  };
  const data: { colours: string[]; numbers: string[] } = {
    colours: ['Foo'],
    numbers: ['Bar']
  };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = subErrorsAt(
    'colours',
    schema.properties.colours.items as JsonSchema
  )(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('subErrorsAt filters oneOf array inner', t => {
  const ajv = createAjv();
  const schema: JsonSchema = {
    type: 'object',
    properties: {
      coloursOrNumbers: {
        oneOf: [
          {
            title: 'Numbers',
            type: 'array',
            items: {
              title: 'Type',
              type: 'string',
              enum: ['One', 'Two', 'Three']
            },
            minItems: 1
          },
          {
            title: 'Colours',
            type: 'array',
            items: {
              title: 'Type',
              type: 'string',
              enum: ['Red', 'Green', 'Blue']
            },
            minItems: 1
          }
        ]
      }
    }
  };
  const data: { coloursOrNumbers: string[] } = { coloursOrNumbers: ['Foo'] };
  const v = ajv.compile(schema);
  const errors = sanitizeErrors(v, data);

  const state: JsonFormsCore = {
    data,
    schema,
    uischema: undefined,
    errors
  };
  const filtered = subErrorsAt(
    'coloursOrNumbers',
    schema.properties.coloursOrNumbers.oneOf[1].items as JsonSchema
  )(state);
  t.is(filtered.length, 1);
  t.deepEqual(filtered[0], state.errors[1]);
});

test('errorAt respects hide validation mode', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };

  const data = {
    animal: 100
  };

  const core: JsonFormsCore = coreReducer(
    undefined,
    init(data, schema, undefined, { validationMode: 'ValidateAndHide' })
  );
  t.is(core.errors.length, 1);
  t.is(errorAt('animal', schema)(core).length, 0);
})

test('core reducer - setValidationMode - No validation should not produce errors', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };

  const data = {
    animal: 100
  };

  const core: JsonFormsCore = coreReducer(
    undefined,
    init(data, schema, undefined, { validationMode: 'NoValidation' })
  );
  t.is(core.errors.length, 0);
  t.is(core.validationMode, 'NoValidation');
});

test('core reducer - setValidationMode - No validation should remove errors', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };

  const data = {
    animal: 100
  };

  const before: JsonFormsCore = coreReducer(undefined, init(data, schema));
  t.is(before.errors.length, 1);

  const after = coreReducer(before, setValidationMode('NoValidation'));
  t.is(after.errors.length, 0);
  t.is(after.validationMode, 'NoValidation');
});

test('core reducer - init - ValidateAndShow should be default validationMode', t => {
  const data = {
    animal: 100
  };

  const core: JsonFormsCore = coreReducer(undefined, init(data));
  t.is(core.validationMode, 'ValidateAndShow');
});

test('core reducer - init - Validation should produce errors', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };

  const data = {
    animal: 100
  };

  const coreShow: JsonFormsCore = coreReducer(
    undefined,
    init(data, schema, undefined, { validationMode: 'ValidateAndShow' })
  );
  t.is(coreShow.errors.length, 1);
  t.is(coreShow.validationMode, 'ValidateAndShow');

  const coreHide: JsonFormsCore = coreReducer(
    undefined,
    init(data, schema, undefined, { validationMode: 'ValidateAndHide' })
  );
  t.is(coreHide.errors.length, 1);
  t.is(coreHide.validationMode, 'ValidateAndHide');
});

test('core reducer - setValidationMode - Validation should produce errors', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };

  const data = {
    animal: 100
  };

  const before: JsonFormsCore = coreReducer(
    undefined,
    init(data, schema, undefined, { validationMode: 'NoValidation' })
  );
  t.is(before.errors.length, 0);

  const coreShow: JsonFormsCore = coreReducer(
    before,
    setValidationMode('ValidateAndShow')
  );
  t.is(coreShow.errors.length, 1);

  const coreHide: JsonFormsCore = coreReducer(
    before,
    setValidationMode('ValidateAndHide')
  );
  t.is(coreHide.errors.length, 1);
});

test('core reducer - setValidationMode - Hide validation should preserve errors', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };

  const data = {
    animal: 100
  };

  const before: JsonFormsCore = coreReducer(
    undefined,
    init(data, schema)
  );
  t.is(before.errors.length, 1);

  const after: JsonFormsCore = coreReducer(
    before,
    setValidationMode('ValidateAndHide')
  );
  t.is(after.errors.length, 1);
});

test('core reducer - update - NoValidation should not produce errors', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };

  const data = {
    animal: 'dog'
  };

  const before: JsonFormsCore = coreReducer(
    undefined,
    init(data, schema, undefined, { validationMode: 'NoValidation' })
  );
  t.is(before.errors.length, 0);

  const after: JsonFormsCore = coreReducer(
    before,
    update('animal', () => 100)
  );
  t.is(after.errors.length, 0);
});

test('core reducer - update - ValidateAndHide should produce errors', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };

  const data = {
    animal: 'dog'
  };

  const before: JsonFormsCore = coreReducer(
    undefined,
    init(data, schema, undefined, { validationMode: 'ValidateAndHide' })
  );
  t.is(before.errors.length, 0);

  const after: JsonFormsCore = coreReducer(
    before,
    update('animal', () => 100)
  );
  t.is(after.errors.length, 1);
});

test('core reducer - update core - state should be unchanged when nothing changes', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };

  const data = {
    animal: 'dog'
  };
  const before: JsonFormsCore = coreReducer(
    undefined,
    init(data, schema)
    );

  const after: JsonFormsCore = coreReducer(
    before,
    updateCore(before.data, before.schema, before.uischema, before.ajv)
  );
  t.true(before === after);
});

test('core reducer - update core - unchanged state properties should be unchanged when state changes', t => {
  const schema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };

  const data = {
    animal: 'dog'
  };
  const before: JsonFormsCore = coreReducer(
    undefined,
    init(data, schema)
    );

  const afterDataUpdate: JsonFormsCore = coreReducer(
    before,
    updateCore({
      animal: 'cat'
    }, before.schema, before.uischema, before.ajv)
  );
  t.true(before.schema === afterDataUpdate.schema);
  t.true(before.ajv === afterDataUpdate.ajv);
  t.true(before.errors === afterDataUpdate.errors);
  t.true(before.refParserOptions === afterDataUpdate.refParserOptions);
  t.true(before.uischema === afterDataUpdate.uischema);
  t.true(before.validationMode === afterDataUpdate.validationMode);
  t.true(before.validator === afterDataUpdate.validator);

  const updatedSchema = {
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      },
      id: {
        type: 'number'
      }
    }
  };
  // check that data stays unchanged as well
  const afterSchemaUpdate : JsonFormsCore = coreReducer(
    before,
    updateCore(before.data, updatedSchema, before.uischema, before.ajv)
  );
  t.true(before.data === afterSchemaUpdate.data);
});

test('core reducer - setSchema - schema with id', t => {
  const schema: JsonSchema = {
    $id: 'https://www.jsonforms.io/example.json',
    type: 'object',
    properties: {
      animal: {
        type: 'string'
      }
    }
  };
  const updatedSchema = cloneDeep(schema);
  updatedSchema.properties.animal.minLength = 5;

  const before: JsonFormsCore = coreReducer(
    undefined,
    init(undefined, schema, undefined, undefined)
  );

  const after: JsonFormsCore = coreReducer(
    before,
    setSchema(updatedSchema)
  );
  t.is(after.schema.properties.animal.minLength, 5);
});