import { describe, it, expect } from 'bun:test';
import { parseTemplate } from '../src/engine/parser';

describe('Template Parser', () => {
  it('should parse simple text template', () => {
    const yaml = `
name: "Test Template"
id: "test"
width: 80mm
blocks:
  - type: text
    content: "Hello World"
    align: center
`;
    const template = parseTemplate(yaml);
    expect(template.name).toBe('Test Template');
    expect(template.blocks).toHaveLength(1);
    expect(template.blocks[0].type).toBe('text');
    expect((template.blocks[0] as any).content).toBe('Hello World');
  });

  it('should parse row with columns', () => {
    const yaml = `
name: "Row Test"
id: "row-test"
width: 80mm
blocks:
  - type: row
    columns:
      - content: "Left"
        align: left
        width: 50%
      - content: "Right"
        align: right
        width: 50%
`;
    const template = parseTemplate(yaml);
    const row = template.blocks[0] as any;
    expect(row.type).toBe('row');
    expect(row.columns).toHaveLength(2);
    expect(row.columns[0].align).toBe('left');
  });

  it('should parse list with item template', () => {
    const yaml = `
name: "List Test"
id: "list-test"
width: 80mm
blocks:
  - type: list
    data: "{{items}}"
    itemTemplate:
      - type: text
        content: "{{name}}"
`;
    const template = parseTemplate(yaml);
    const list = template.blocks[0] as any;
    expect(list.type).toBe('list');
    expect(list.data).toBe('{{items}}');
    expect(list.itemTemplate).toHaveLength(1);
  });

  it('should throw on invalid YAML', () => {
    const yaml = 'invalid: [unclosed';
    expect(() => parseTemplate(yaml)).toThrow();
  });
});