// Copyright 2016 Documize Inc. <legal@documize.com>. All rights reserved.
//
// This software (Documize Community Edition) is licensed under
// GNU AGPL v3 http://www.gnu.org/licenses/agpl-3.0.en.html
//
// You can operate outside the AGPL restrictions by purchasing
// Documize Enterprise Edition and obtaining a commercial license
// by contacting <sales@documize.com>.
//
// https://documize.com

package attachment

import (
	"strings"
	"time"

	"github.com/documize/community/domain"
	"github.com/documize/community/domain/store/mysql"
	"github.com/pkg/errors"

	"github.com/documize/community/core/env"
	"github.com/documize/community/core/streamutil"
	"github.com/documize/community/model/attachment"
)

// Scope provides data access to MySQL.
type Scope struct {
	Runtime *env.Runtime
}

// Add inserts the given record into the database attachement table.
func (s Scope) Add(ctx domain.RequestContext, a attachment.Attachment) (err error) {
	a.OrgID = ctx.OrgID
	a.Created = time.Now().UTC()
	a.Revised = time.Now().UTC()
	bits := strings.Split(a.Filename, ".")
	a.Extension = bits[len(bits)-1]

	stmt, err := ctx.Transaction.Preparex("INSERT INTO attachment (refid, orgid, documentid, job, fileid, filename, data, extension, created, revised) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)")
	defer streamutil.Close(stmt)

	if err != nil {
		err = errors.Wrap(err, "prepare insert attachment")
		return
	}

	_, err = stmt.Exec(a.RefID, a.OrgID, a.DocumentID, a.Job, a.FileID, a.Filename, a.Data, a.Extension, a.Created, a.Revised)
	if err != nil {
		err = errors.Wrap(err, "execute insert attachment")
		return
	}

	return
}

// GetAttachment returns the database attachment record specified by the parameters.
func (s Scope) GetAttachment(ctx domain.RequestContext, orgID, attachmentID string) (a attachment.Attachment, err error) {
	stmt, err := s.Runtime.Db.Preparex("SELECT id, refid, orgid, documentid, job, fileid, filename, data, extension, created, revised FROM attachment WHERE orgid=? and refid=?")
	defer streamutil.Close(stmt)

	if err != nil {
		err = errors.Wrap(err, "prepare select attachment")
		return
	}

	err = stmt.Get(&a, orgID, attachmentID)
	if err != nil {
		err = errors.Wrap(err, "execute select attachment")
		return
	}

	return
}

// GetAttachments returns a slice containing the attachement records (excluding their data) for document docID, ordered by filename.
func (s Scope) GetAttachments(ctx domain.RequestContext, docID string) (a []attachment.Attachment, err error) {
	err = s.Runtime.Db.Select(&a, "SELECT id, refid, orgid, documentid, job, fileid, filename, extension, created, revised FROM attachment WHERE orgid=? and documentid=? order by filename", ctx.OrgID, docID)

	if err != nil {
		err = errors.Wrap(err, "execute select attachments")
		return
	}

	return
}

// GetAttachmentsWithData returns a slice containing the attachement records (including their data) for document docID, ordered by filename.
func (s Scope) GetAttachmentsWithData(ctx domain.RequestContext, docID string) (a []attachment.Attachment, err error) {
	err = s.Runtime.Db.Select(&a, "SELECT id, refid, orgid, documentid, job, fileid, filename, extension, data, created, revised FROM attachment WHERE orgid=? and documentid=? order by filename", ctx.OrgID, docID)

	if err != nil {
		err = errors.Wrap(err, "execute select attachments with data")
		return
	}

	return
}

// Delete deletes the id record from the database attachment table.
func (s Scope) Delete(ctx domain.RequestContext, id string) (rows int64, err error) {
	b := mysql.BaseQuery{}
	return b.DeleteConstrained(ctx.Transaction, "attachment", ctx.OrgID, id)
}