import {
    Entity,
    Column,
    PrimaryGeneratedColumn,
    CreateDateColumn,
    UpdateDateColumn,
    Index,
    Unique,
} from 'typeorm';
import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';

@Entity('positions')
@Unique(['userId', 'brokerId', 'symbol', 'market', 'assetType'])
export class Position {
    @ApiProperty({ description: '持仓ID', example: 1 })
    @PrimaryGeneratedColumn({ name: 'position_id' })
    positionId: number;

    @ApiProperty({
        description: '用户ID',
        example: 1,
    })
    @Column({ name: 'user_id', type: 'bigint' })
    @Index()
    userId: number;

    @ApiProperty({
        description: '券商ID',
        example: 1,
    })
    @Column({ name: 'broker_id', type: 'bigint' })
    @Index()
    brokerId: number;

    @ApiProperty({
        description: '资产类型',
        example: 'stock',
        enum: ['stock', 'fund', 'cash', 'bond', 'other'],
    })
    @Column({
        name: 'asset_type',
        type: 'varchar',
        length: 20,
    })
    @Index()
    assetType: string;

    @ApiProperty({
        description: '资产代码（股票代码、基金代码等）',
        example: '600519',
        maxLength: 50,
    })
    @Column({ name: 'symbol', type: 'varchar', length: 50 })
    @Index()
    symbol: string;

    @ApiProperty({
        description: '资产名称',
        example: '贵州茅台',
        maxLength: 100,
    })
    @Column({ name: 'name', type: 'varchar', length: 100 })
    name: string;

    @ApiPropertyOptional({
        description: '市场（A股/港股/美股等）',
        example: 'sh',
        maxLength: 20,
    })
    @Column({ name: 'market', type: 'varchar', length: 20, nullable: true })
    market?: string;

    @ApiProperty({
        description: '持仓份额/数量',
        example: 100,
    })
    @Column({
        name: 'shares',
        type: 'decimal',
        precision: 18,
        scale: 4,
        default: 0,
    })
    shares: number;

    @ApiProperty({
        description: '成本价（每股/每份）',
        example: 1600.0,
    })
    @Column({
        name: 'cost_price',
        type: 'decimal',
        precision: 18,
        scale: 4,
    })
    costPrice: number;

    @ApiPropertyOptional({
        description: '最新市场价（系统自动更新）',
        example: 1850.0,
    })
    @Column({
        name: 'current_price',
        type: 'decimal',
        precision: 18,
        scale: 4,
        nullable: true,
    })
    currentPrice?: number;

    @ApiProperty({
        description: '货币类型',
        example: 'CNY',
        default: 'CNY',
        maxLength: 10,
    })
    @Column({
        name: 'currency',
        type: 'varchar',
        length: 10,
        default: 'CNY',
    })
    currency: string;

    @ApiPropertyOptional({
        description: '汇率（用于多货币）',
        example: 1.0,
        default: 1,
    })
    @Column({
        name: 'exchange_rate',
        type: 'decimal',
        precision: 10,
        scale: 6,
        default: 1,
    })
    exchangeRate?: number;

    @ApiProperty({
        description: '是否自动更新价格（付费用户功能）',
        example: false,
        default: false,
    })
    @Column({
        name: 'auto_price_update',
        type: 'boolean',
        default: false,
    })
    autoPriceUpdate: boolean;

    @ApiProperty({
        description: '状态',
        example: 'active',
        enum: ['active', 'suspended', 'delisted'],
        default: 'active',
    })
    @Column({
        name: 'status',
        type: 'varchar',
        length: 20,
        default: 'active',
    })
    @Index()
    status: string;

    @ApiProperty({
        description: '创建时间',
        example: '2024-01-01T00:00:00.000Z',
    })
    @CreateDateColumn({ name: 'created_at' })
    createdAt: Date;

    @ApiProperty({
        description: '更新时间',
        example: '2024-01-01T00:00:00.000Z',
    })
    @UpdateDateColumn({ name: 'updated_at' })
    updatedAt: Date;
}