package common

import (
	"context"
	"errors"

	"github.com/gogf/gf/v2/database/gdb"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/os/gtime"
	"github.com/tiger1103/gfast/v3/internal/app/lock"
	"github.com/tiger1103/gfast/v3/internal/app/system/service"
)

type audit struct{}

var Audit = new(audit)

type AuditReq struct {
	Id          int         `p:"id" v:"required#主键ID不能为空"`
	AuditStatus int         `p:"auditStatus"`
	AuditView   string      `p:"auditView"`
	AuditUser   uint64      `p:"auditUser"`
	AuditDate   *gtime.Time `p:"auditDate"`
	AuditDept   string      `p:"auditDept"`
	Status      int         `p:"status"`
	Version     int         `p:"version"`
}

// Audit 审核逻辑（通用方法）
// 参数说明：
// - ctx: 请求上下文
// - model: 数据表操作对象（如 dao.YourModel.Ctx(ctx)）
// - req: 审核请求结构体（包含 id, version, 审核状态等）
// - save: 实际保存函数，由业务层传入
func (c *audit) Audit(
	ctx context.Context,
	model *gdb.Model,
	req *AuditReq,
	save func(ctx context.Context, req *AuditReq) error,
) error {
	if req.Id == 0 || req.Version == 0 {
		return errors.New("缺少 ID 或版本号")
	}
	if req.AuditStatus == 0 {
		return errors.New("审核状态不能为空")
	}

	// 执行乐观锁检查与 version 自增
	newVersion, err := lock.TryOptimisticLock(ctx, model, "id", req.Id, req.Version)
	if err != nil {
		return err
	}

	// 填充审核人、时间、新版本号
	req.Version = newVersion
	if req.AuditDate == nil {
		req.AuditDate = gtime.Now()
	}
	if req.AuditUser == 0 {
		req.AuditUser = service.Context().GetUserId(ctx)
	}
	// 执行业务 save
	return save(ctx, req)
}
func (c *audit) SaveAudit(model *gdb.Model, req *AuditReq) error {
	_, err := model.Data(g.Map{
		"audit_status": req.AuditStatus,
		"audit_user":   req.AuditUser,
		"audit_date":   req.AuditDate,
		"version":      req.Version,
		"audit_view":   req.AuditView,
		"audit_dept":   req.AuditDept,
		"status":       req.Status,
	}).Where("id", req.Id).Update()
	return err
}