/**
 * Schema 边缘场景测试
 */

import { createSchema, validateRow, getPrimaryKey, checkFieldType, astColumnToColumnDef } from '../../src/table/schema';

describe('Schema 边缘场景', () => {
  // ---- createSchema ----

  describe('createSchema', () => {
    it('空列表抛出错误', () => {
      expect(() => createSchema('empty', {})).toThrow('at least one column');
    });

    it('多主键定义（取第一个标记的）', () => {
      const schema = createSchema('multi', {
        id1: { type: 'string', primaryKey: true },
        id2: { type: 'string' },
      });
      expect(getPrimaryKey(schema)).toBe('id1');
    });

    it('大表定义', () => {
      const cols: Record<string, any> = {};
      for (let i = 0; i < 50; i++) {
        cols[`col${i}`] = { type: 'string' };
      }
      cols.id = { type: 'string', primaryKey: true };
      const schema = createSchema('big', cols);
      expect(Object.keys(schema.columns)).toHaveLength(51);
    });
  });

  // ---- getPrimaryKey ----

  describe('getPrimaryKey', () => {
    it('没有标记主键时返回第一列', () => {
      const schema = createSchema('test', {
        uuid: { type: 'string', primaryKey: true },
        name: { type: 'string' },
      });
      // 重新构造不带主键标记的 schema
      const noPkSchema = { name: 'test', columns: {
        first: { type: 'string' as const },
        second: { type: 'string' as const },
      }};
      expect(getPrimaryKey(noPkSchema)).toBe('first');
    });
  });

  // ---- validateRow ----

  describe('validateRow', () => {
    const schema = createSchema('users', {
      id: { type: 'string', primaryKey: true },
      name: { type: 'string', required: true },
      bio: { type: 'string', maxLength: 200 },
      score: { type: 'number', min: 0, max: 100, default: 50 },
      active: { type: 'boolean', default: true },
      birthday: { type: 'date' },
      tags: { type: 'json', default: [] },
    });

    it('跳过 undefined 字段（使用默认值）', () => {
      const row = validateRow(schema, { id: '1', name: 'Alice' });
      expect(row.id).toBe('1');
      expect(row.name).toBe('Alice');
      expect(row.score).toBe(50);
      expect(row.active).toBe(true);
      expect(row.tags).toEqual([]);
    });

    it('null 值被视为不满足必填', () => {
      expect(() => validateRow(schema, { id: '1', name: null })).toThrow('required');
    });

    it('json 类型接受对象', () => {
      const row = validateRow(schema, { id: '1', name: 'Alice', tags: { key: 'value' } });
      expect(row.tags).toEqual({ key: 'value' });
    });

    it('json 类型接受数组', () => {
      const row = validateRow(schema, { id: '1', name: 'Alice', tags: [1, 2, 3] });
      expect(row.tags).toEqual([1, 2, 3]);
    });

    it('date 类型接受有效日期字符串', () => {
      const row = validateRow(schema, { id: '1', name: 'Alice', birthday: '2024-01-15' });
      expect(row.birthday).toBe('2024-01-15');
    });

    it('date 类型拒绝无效格式', () => {
      expect(() => validateRow(schema, { id: '1', name: 'Alice', birthday: 'not-a-date' }))
        .toThrow('expects valid date');
      expect(() => validateRow(schema, { id: '1', name: 'Alice', birthday: 123 }))
        .toThrow('expects valid date');
    });

    it('boolean 类型', () => {
      const row = validateRow(schema, { id: '1', name: 'Alice', active: false });
      expect(row.active).toBe(false);
    });

    it('boolean 拒绝非布尔值', () => {
      expect(() => validateRow(schema, { id: '1', name: 'Alice', active: 'yes' }))
        .toThrow('expects boolean');
    });

    it('number 拒绝字符串', () => {
      expect(() => validateRow(schema, { id: '1', name: 'Alice', score: 'high' }))
        .toThrow('expects number');
    });

    it('string 拒绝数字', () => {
      expect(() => validateRow(schema, { id: 123, name: 'Alice' }))
        .toThrow('expects string');
    });
  });

  // ---- checkFieldType ----

  describe('checkFieldType', () => {
    it('string 类型通过', () => {
      expect(() => checkFieldType('t', 'c', 'string', 'hello')).not.toThrow();
    });

    it('string 类型拒绝', () => {
      expect(() => checkFieldType('t', 'c', 'string', 123)).toThrow('expects string');
    });

    it('number 类型通过', () => {
      expect(() => checkFieldType('t', 'c', 'number', 42)).not.toThrow();
      expect(() => checkFieldType('t', 'c', 'number', 3.14)).not.toThrow();
      expect(() => checkFieldType('t', 'c', 'number', 0)).not.toThrow();
    });

    it('boolean 类型通过', () => {
      expect(() => checkFieldType('t', 'c', 'boolean', true)).not.toThrow();
      expect(() => checkFieldType('t', 'c', 'boolean', false)).not.toThrow();
    });

    it('json 拒绝非对象', () => {
      expect(() => checkFieldType('t', 'c', 'json', 'not-object')).toThrow('expects object');
      expect(() => checkFieldType('t', 'c', 'json', 123)).toThrow('expects object');
    });
  });

  // ---- astColumnToColumnDef ----

  describe('astColumnToColumnDef', () => {
    it('转换基础列', () => {
      const result = astColumnToColumnDef({ name: 'id', type: 'string' });
      expect(result.type).toBe('string');
    });

    it('转换带修饰符的列', () => {
      const result = astColumnToColumnDef({
        name: 'id', type: 'string', primaryKey: true, unique: true, required: true,
      });
      expect(result.primaryKey).toBe(true);
      expect(result.unique).toBe(true);
      expect(result.required).toBe(true);
    });
  });
});