1 files changed, 201 insertions, 0 deletions
diff --git a/models/packages/package_file.go b/models/packages/package_file.go
new file mode 100644
index 0000000000..df36467548
--- /dev/null
+++ b/models/packages/package_file.go
@@ -0,0 +1,201 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package packages
+
+import (
+	"context"
+	"errors"
+	"strconv"
+	"strings"
+	"time"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/modules/timeutil"
+
+	"xorm.io/builder"
+)
+
+func init() {
+	db.RegisterModel(new(PackageFile))
+}
+
+var (
+	// ErrDuplicatePackageFile indicates a duplicated package file error
+	ErrDuplicatePackageFile = errors.New("Package file does exist already")
+	// ErrPackageFileNotExist indicates a package file not exist error
+	ErrPackageFileNotExist = errors.New("Package file does not exist")
+)
+
+// EmptyFileKey is a named constant for an empty file key
+const EmptyFileKey = ""
+
+// PackageFile represents a package file
+type PackageFile struct {
+	ID           int64              `xorm:"pk autoincr"`
+	VersionID    int64              `xorm:"UNIQUE(s) INDEX NOT NULL"`
+	BlobID       int64              `xorm:"INDEX NOT NULL"`
+	Name         string             `xorm:"NOT NULL"`
+	LowerName    string             `xorm:"UNIQUE(s) INDEX NOT NULL"`
+	CompositeKey string             `xorm:"UNIQUE(s) INDEX"`
+	IsLead       bool               `xorm:"NOT NULL DEFAULT false"`
+	CreatedUnix  timeutil.TimeStamp `xorm:"created INDEX NOT NULL"`
+}
+
+// TryInsertFile inserts a file. If the file exists already ErrDuplicatePackageFile is returned
+func TryInsertFile(ctx context.Context, pf *PackageFile) (*PackageFile, error) {
+	e := db.GetEngine(ctx)
+
+	key := &PackageFile{
+		VersionID:    pf.VersionID,
+		LowerName:    pf.LowerName,
+		CompositeKey: pf.CompositeKey,
+	}
+
+	has, err := e.Get(key)
+	if err != nil {
+		return nil, err
+	}
+	if has {
+		return pf, ErrDuplicatePackageFile
+	}
+	if _, err = e.Insert(pf); err != nil {
+		return nil, err
+	}
+	return pf, nil
+}
+
+// GetFilesByVersionID gets all files of a version
+func GetFilesByVersionID(ctx context.Context, versionID int64) ([]*PackageFile, error) {
+	pfs := make([]*PackageFile, 0, 10)
+	return pfs, db.GetEngine(ctx).Where("version_id = ?", versionID).Find(&pfs)
+}
+
+// GetFileForVersionByID gets a file of a version by id
+func GetFileForVersionByID(ctx context.Context, versionID, fileID int64) (*PackageFile, error) {
+	pf := &PackageFile{
+		VersionID: versionID,
+	}
+
+	has, err := db.GetEngine(ctx).ID(fileID).Get(pf)
+	if err != nil {
+		return nil, err
+	}
+	if !has {
+		return nil, ErrPackageFileNotExist
+	}
+	return pf, nil
+}
+
+// GetFileForVersionByName gets a file of a version by name
+func GetFileForVersionByName(ctx context.Context, versionID int64, name, key string) (*PackageFile, error) {
+	if name == "" {
+		return nil, ErrPackageFileNotExist
+	}
+
+	pf := &PackageFile{
+		VersionID:    versionID,
+		LowerName:    strings.ToLower(name),
+		CompositeKey: key,
+	}
+
+	has, err := db.GetEngine(ctx).Get(pf)
+	if err != nil {
+		return nil, err
+	}
+	if !has {
+		return nil, ErrPackageFileNotExist
+	}
+	return pf, nil
+}
+
+// DeleteFileByID deletes a file
+func DeleteFileByID(ctx context.Context, fileID int64) error {
+	_, err := db.GetEngine(ctx).ID(fileID).Delete(&PackageFile{})
+	return err
+}
+
+// PackageFileSearchOptions are options for SearchXXX methods
+type PackageFileSearchOptions struct {
+	OwnerID      int64
+	PackageType  string
+	VersionID    int64
+	Query        string
+	CompositeKey string
+	Properties   map[string]string
+	OlderThan    time.Duration
+	db.Paginator
+}
+
+func (opts *PackageFileSearchOptions) toConds() builder.Cond {
+	cond := builder.NewCond()
+
+	if opts.VersionID != 0 {
+		cond = cond.And(builder.Eq{"package_file.version_id": opts.VersionID})
+	} else if opts.OwnerID != 0 || (opts.PackageType != "" && opts.PackageType != "all") {
+		var versionCond builder.Cond = builder.Eq{
+			"package_version.is_internal": false,
+		}
+		if opts.OwnerID != 0 {
+			versionCond = versionCond.And(builder.Eq{"package.owner_id": opts.OwnerID})
+		}
+		if opts.PackageType != "" && opts.PackageType != "all" {
+			versionCond = versionCond.And(builder.Eq{"package.type": opts.PackageType})
+		}
+
+		in := builder.
+			Select("package_version.id").
+			From("package_version").
+			Join("INNER", "package", "package.id = package_version.package_id").
+			Where(versionCond)
+
+		cond = cond.And(builder.In("package_file.version_id", in))
+	}
+	if opts.CompositeKey != "" {
+		cond = cond.And(builder.Eq{"package_file.composite_key": opts.CompositeKey})
+	}
+	if opts.Query != "" {
+		cond = cond.And(builder.Like{"package_file.lower_name", strings.ToLower(opts.Query)})
+	}
+
+	if len(opts.Properties) != 0 {
+		var propsCond builder.Cond = builder.Eq{
+			"package_property.ref_type": PropertyTypeFile,
+		}
+		propsCond = propsCond.And(builder.Expr("package_property.ref_id = package_file.id"))
+
+		propsCondBlock := builder.NewCond()
+		for name, value := range opts.Properties {
+			propsCondBlock = propsCondBlock.Or(builder.Eq{
+				"package_property.name":  name,
+				"package_property.value": value,
+			})
+		}
+		propsCond = propsCond.And(propsCondBlock)
+
+		cond = cond.And(builder.Eq{
+			strconv.Itoa(len(opts.Properties)): builder.Select("COUNT(*)").Where(propsCond).From("package_property"),
+		})
+	}
+
+	if opts.OlderThan != 0 {
+		cond = cond.And(builder.Lt{"package_file.created_unix": time.Now().Add(-opts.OlderThan).Unix()})
+	}
+
+	return cond
+}
+
+// SearchFiles gets all files of packages matching the search options
+func SearchFiles(ctx context.Context, opts *PackageFileSearchOptions) ([]*PackageFile, int64, error) {
+	sess := db.GetEngine(ctx).
+		Where(opts.toConds())
+
+	if opts.Paginator != nil {
+		sess = db.SetSessionPagination(sess, opts)
+	}
+
+	pfs := make([]*PackageFile, 0, 10)
+	count, err := sess.FindAndCount(&pfs)
+	return pfs, count, err
+}