package biz

import (
	"context"
	"time"

	"gitlab.guxuan.icu/jinshan_community/internal/mods/common/dal"
	"gitlab.guxuan.icu/jinshan_community/internal/mods/common/schema"
	"gitlab.guxuan.icu/jinshan_community/pkg/errors"
	"gitlab.guxuan.icu/jinshan_community/pkg/util"
)

// Defining the `WorkOrder` business logic.
type WorkOrder struct {
	Trans        *util.Trans
	WorkOrderDAL *dal.WorkOrder
}

// Query work orders from the data access object based on the provided parameters and options.
func (a *WorkOrder) Query(ctx context.Context, params schema.WorkOrderQueryParam) (*schema.WorkOrderQueryResult, error) {
	params.Pagination = true

	result, err := a.WorkOrderDAL.Query(ctx, params, schema.WorkOrderQueryOptions{
		QueryOptions: util.QueryOptions{
			OrderFields: []util.OrderByParam{
				{Field: "created_at", Direction: util.DESC},
			},
		},
	})
	if err != nil {
		return nil, err
	}
	return result, nil
}

// Get the specified work order from the data access object.
func (a *WorkOrder) Get(ctx context.Context, id string) (*schema.WorkOrder, error) {
	workOrder, err := a.WorkOrderDAL.Get(ctx, id)
	if err != nil {
		return nil, err
	} else if workOrder == nil {
		return nil, errors.NotFound("", "Work order not found")
	}
	return workOrder, nil
}

// Create a new work order in the data access object.
func (a *WorkOrder) Create(ctx context.Context, formItem *schema.WorkOrderForm) (*schema.WorkOrder, error) {
	workOrder := &schema.WorkOrder{}

	if err := formItem.FillTo(workOrder); err != nil {
		return nil, err
	}

	err := a.Trans.Exec(ctx, func(ctx context.Context) error {
		if err := a.WorkOrderDAL.Create(ctx, workOrder); err != nil {
			return err
		}
		return nil
	})
	if err != nil {
		return nil, err
	}
	return workOrder, nil
}

// Update the specified work order in the data access object.
func (a *WorkOrder) Update(ctx context.Context, id string, formItem *schema.WorkOrderForm) error {
	workOrder, err := a.WorkOrderDAL.Get(ctx, id)
	if err != nil {
		return err
	} else if workOrder == nil {
		return errors.NotFound("", "Work order not found")
	}

	if err := formItem.FillTo(workOrder); err != nil {
		return err
	}
	workOrder.UpdatedAt = time.Now()

	return a.Trans.Exec(ctx, func(ctx context.Context) error {
		if err := a.WorkOrderDAL.Update(ctx, workOrder); err != nil {
			return err
		}
		return nil
	})
}

// Delete the specified work order from the data access object.
func (a *WorkOrder) Delete(ctx context.Context, id string) error {
	exists, err := a.WorkOrderDAL.Exists(ctx, id)
	if err != nil {
		return err
	} else if !exists {
		return errors.NotFound("", "Work order not found")
	}

	return a.Trans.Exec(ctx, func(ctx context.Context) error {
		if err := a.WorkOrderDAL.Delete(ctx, id); err != nil {
			return err
		}
		return nil
	})
}