import { BelongsTo, Column, DataType, ForeignKey, Model, Table } from 'sequelize-typescript';
import { ExerciseCategory } from './exercise-category.model';

@Table({
  tableName: 't_exercises',
  underscored: true,
})
export class Exercise extends Model {
  @Column({
    type: DataType.STRING,
    primaryKey: true,
    comment: '动作唯一键（英文/下划线）',
  })
  declare key: string;

  @Column({ type: DataType.STRING, allowNull: false, comment: '动作名称' })
  declare name: string;

  @Column({ type: DataType.STRING, allowNull: false, comment: '中文分类名（冗余，便于展示）' })
  declare categoryName: string;

  @Column({ type: DataType.TEXT, allowNull: true, comment: '动作描述' })
  declare description: string;

  @Column({ type: DataType.TEXT, allowNull: false, comment: '主要锻炼肌肉群' })
  declare targetMuscleGroups: string;

  @Column({ type: DataType.STRING, allowNull: true, comment: '器械名称（器械普拉提专用）' })
  declare equipmentName: string;

  @Column({ type: DataType.INTEGER, allowNull: true, comment: '入门级别建议练习次数' })
  declare beginnerReps: number;

  @Column({ type: DataType.INTEGER, allowNull: true, comment: '入门级别建议组数' })
  declare beginnerSets: number;

  @Column({ type: DataType.INTEGER, allowNull: true, comment: '呼吸循环次数（替代普通次数）' })
  declare breathingCycles: number;

  @Column({ type: DataType.INTEGER, allowNull: true, comment: '保持时间（秒）' })
  declare holdDuration: number;

  @Column({ type: DataType.STRING, allowNull: true, comment: '特殊说明（如每侧、前后各等）' })
  declare specialInstructions: string;

  @ForeignKey(() => ExerciseCategory)
  @Column({ type: DataType.STRING, allowNull: false, comment: '分类键' })
  declare categoryKey: string;

  @BelongsTo(() => ExerciseCategory, { foreignKey: 'categoryKey', targetKey: 'key' })
  declare category: ExerciseCategory;

  @Column({ type: DataType.INTEGER, allowNull: false, defaultValue: 0, comment: '排序（分类内）' })
  declare sortOrder: number;

  @Column({ type: DataType.DATE, defaultValue: DataType.NOW })
  declare createdAt: Date;

  @Column({ type: DataType.DATE, defaultValue: DataType.NOW })
  declare updatedAt: Date;
}