import BaseModel from "@/base/BaseModel.js"

class UserModel extends BaseModel {
    /**
     * @returns {UserModel}
     */
    static getInstance() {
        return super.getInstance()
    }

    constructor() {
        super()
    }

    get tableName() {
        return "users"
    }

    get searchableFields() {
        return ["username", "email", "name"]
    }

    get filterableFields() {
        return ["role", "status"]
    }

    // 特定业务方法
    async findByUsername(username) {
        return this.findFirst({ username })
    }

    async findByEmail(email) {
        return this.findFirst({ email })
    }

    // 重写create方法添加验证
    async create(data) {
        // 验证唯一性
        if (data.username) {
            const existingUser = await this.findByUsername(data.username)
            if (existingUser) {
                throw new Error("用户名已存在")
            }
        }

        if (data.email) {
            const existingEmail = await this.findByEmail(data.email)
            if (existingEmail) {
                throw new Error("邮箱已存在")
            }
        }

        return super.create(data)
    }

    // 重写update方法添加验证
    async update(id, data) {
        console.log(id, data);
        
        // 验证唯一性（排除当前用户）
        if (data.username) {
            const existingUser = await this.findFirst({ username: data.username })
            if (existingUser && existingUser.id !== parseInt(id)) {
                throw new Error("用户名已存在")
            }
        }

        if (data.email) {
            const existingEmail = await this.findFirst({ email: data.email })
            if (existingEmail && existingEmail.id !== parseInt(id)) {
                throw new Error("邮箱已存在")
            }
        }

        return super.update(id, data)
    }

    // 用户状态管理
    async activate(id) {
        return this.update(id, { status: "active" })
    }

    async deactivate(id) {
        return this.update(id, { status: "inactive" })
    }

    // 按角色查找用户
    async findByRole(role) {
        return this.findWhere({ role })
    }

    // 获取用户统计
    async getUserStats() {
        const total = await this.count()
        const active = await this.count({ status: "active" })
        const inactive = await this.count({ status: "inactive" })

        return {
            total,
            active,
            inactive,
        }
    }
}

export default UserModel
export { UserModel }