Adding upstream version 9.0.3.

Signed-off-by: Daniel Baumann <daniel@debian.org>

7 files changed, 1273 insertions, 0 deletions

diff --git a/models/project/column.go b/models/project/column.go
new file mode 100644
index 0000000..222f448
--- /dev/null
+++ b/models/project/column.go
@@ -0,0 +1,359 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package project
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"regexp"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/timeutil"
+	"code.gitea.io/gitea/modules/util"
+
+	"xorm.io/builder"
+)
+
+type (
+
+	// CardType is used to represent a project column card type
+	CardType uint8
+
+	// ColumnList is a list of all project columns in a repository
+	ColumnList []*Column
+)
+
+const (
+	// CardTypeTextOnly is a project column card type that is text only
+	CardTypeTextOnly CardType = iota
+
+	// CardTypeImagesAndText is a project column card type that has images and text
+	CardTypeImagesAndText
+)
+
+// ColumnColorPattern is a regexp witch can validate ColumnColor
+var ColumnColorPattern = regexp.MustCompile("^#[0-9a-fA-F]{6}$")
+
+// Column is used to represent column on a project
+type Column struct {
+	ID      int64 `xorm:"pk autoincr"`
+	Title   string
+	Default bool   `xorm:"NOT NULL DEFAULT false"` // issues not assigned to a specific column will be assigned to this column
+	Sorting int8   `xorm:"NOT NULL DEFAULT 0"`
+	Color   string `xorm:"VARCHAR(7)"`
+
+	ProjectID int64 `xorm:"INDEX NOT NULL"`
+	CreatorID int64 `xorm:"NOT NULL"`
+
+	CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
+	UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"`
+}
+
+// TableName return the real table name
+func (Column) TableName() string {
+	return "project_board" // TODO: the legacy table name should be project_column
+}
+
+// NumIssues return counter of all issues assigned to the column
+func (c *Column) NumIssues(ctx context.Context) int {
+	total, err := db.GetEngine(ctx).Table("project_issue").
+		Where("project_id=?", c.ProjectID).
+		And("project_board_id=?", c.ID).
+		GroupBy("issue_id").
+		Cols("issue_id").
+		Count()
+	if err != nil {
+		return 0
+	}
+	return int(total)
+}
+
+func (c *Column) GetIssues(ctx context.Context) ([]*ProjectIssue, error) {
+	issues := make([]*ProjectIssue, 0, 5)
+	if err := db.GetEngine(ctx).Where("project_id=?", c.ProjectID).
+		And("project_board_id=?", c.ID).
+		OrderBy("sorting, id").
+		Find(&issues); err != nil {
+		return nil, err
+	}
+	return issues, nil
+}
+
+func init() {
+	db.RegisterModel(new(Column))
+}
+
+// IsCardTypeValid checks if the project column card type is valid
+func IsCardTypeValid(p CardType) bool {
+	switch p {
+	case CardTypeTextOnly, CardTypeImagesAndText:
+		return true
+	default:
+		return false
+	}
+}
+
+func createDefaultColumnsForProject(ctx context.Context, project *Project) error {
+	var items []string
+
+	switch project.TemplateType {
+	case TemplateTypeBugTriage:
+		items = setting.Project.ProjectBoardBugTriageType
+	case TemplateTypeBasicKanban:
+		items = setting.Project.ProjectBoardBasicKanbanType
+	case TemplateTypeNone:
+		fallthrough
+	default:
+		return nil
+	}
+
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		column := Column{
+			CreatedUnix: timeutil.TimeStampNow(),
+			CreatorID:   project.CreatorID,
+			Title:       "Backlog",
+			ProjectID:   project.ID,
+			Default:     true,
+		}
+		if err := db.Insert(ctx, column); err != nil {
+			return err
+		}
+
+		if len(items) == 0 {
+			return nil
+		}
+
+		columns := make([]Column, 0, len(items))
+		for _, v := range items {
+			columns = append(columns, Column{
+				CreatedUnix: timeutil.TimeStampNow(),
+				CreatorID:   project.CreatorID,
+				Title:       v,
+				ProjectID:   project.ID,
+			})
+		}
+
+		return db.Insert(ctx, columns)
+	})
+}
+
+// maxProjectColumns max columns allowed in a project, this should not bigger than 127
+// because sorting is int8 in database
+const maxProjectColumns = 20
+
+// NewColumn adds a new project column to a given project
+func NewColumn(ctx context.Context, column *Column) error {
+	if len(column.Color) != 0 && !ColumnColorPattern.MatchString(column.Color) {
+		return fmt.Errorf("bad color code: %s", column.Color)
+	}
+
+	res := struct {
+		MaxSorting  int64
+		ColumnCount int64
+	}{}
+	if _, err := db.GetEngine(ctx).Select("max(sorting) as max_sorting, count(*) as column_count").Table("project_board").
+		Where("project_id=?", column.ProjectID).Get(&res); err != nil {
+		return err
+	}
+	if res.ColumnCount >= maxProjectColumns {
+		return fmt.Errorf("NewBoard: maximum number of columns reached")
+	}
+	column.Sorting = int8(util.Iif(res.ColumnCount > 0, res.MaxSorting+1, 0))
+	_, err := db.GetEngine(ctx).Insert(column)
+	return err
+}
+
+// DeleteColumnByID removes all issues references to the project column.
+func DeleteColumnByID(ctx context.Context, columnID int64) error {
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		return deleteColumnByID(ctx, columnID)
+	})
+}
+
+func deleteColumnByID(ctx context.Context, columnID int64) error {
+	column, err := GetColumn(ctx, columnID)
+	if err != nil {
+		if IsErrProjectColumnNotExist(err) {
+			return nil
+		}
+
+		return err
+	}
+
+	if column.Default {
+		return fmt.Errorf("deleteColumnByID: cannot delete default column")
+	}
+
+	// move all issues to the default column
+	project, err := GetProjectByID(ctx, column.ProjectID)
+	if err != nil {
+		return err
+	}
+	defaultColumn, err := project.GetDefaultColumn(ctx)
+	if err != nil {
+		return err
+	}
+
+	if err = column.moveIssuesToAnotherColumn(ctx, defaultColumn); err != nil {
+		return err
+	}
+
+	if _, err := db.GetEngine(ctx).ID(column.ID).NoAutoCondition().Delete(column); err != nil {
+		return err
+	}
+	return nil
+}
+
+func deleteColumnByProjectID(ctx context.Context, projectID int64) error {
+	_, err := db.GetEngine(ctx).Where("project_id=?", projectID).Delete(&Column{})
+	return err
+}
+
+// GetColumn fetches the current column of a project
+func GetColumn(ctx context.Context, columnID int64) (*Column, error) {
+	column := new(Column)
+	has, err := db.GetEngine(ctx).ID(columnID).Get(column)
+	if err != nil {
+		return nil, err
+	} else if !has {
+		return nil, ErrProjectColumnNotExist{ColumnID: columnID}
+	}
+
+	return column, nil
+}
+
+// UpdateColumn updates a project column
+func UpdateColumn(ctx context.Context, column *Column) error {
+	var fieldToUpdate []string
+
+	if column.Sorting != 0 {
+		fieldToUpdate = append(fieldToUpdate, "sorting")
+	}
+
+	if column.Title != "" {
+		fieldToUpdate = append(fieldToUpdate, "title")
+	}
+
+	if len(column.Color) != 0 && !ColumnColorPattern.MatchString(column.Color) {
+		return fmt.Errorf("bad color code: %s", column.Color)
+	}
+	fieldToUpdate = append(fieldToUpdate, "color")
+
+	_, err := db.GetEngine(ctx).ID(column.ID).Cols(fieldToUpdate...).Update(column)
+
+	return err
+}
+
+// GetColumns fetches all columns related to a project
+func (p *Project) GetColumns(ctx context.Context) (ColumnList, error) {
+	columns := make([]*Column, 0, 5)
+	if err := db.GetEngine(ctx).Where("project_id=?", p.ID).OrderBy("sorting, id").Find(&columns); err != nil {
+		return nil, err
+	}
+
+	return columns, nil
+}
+
+// GetDefaultColumn return default column and ensure only one exists
+func (p *Project) GetDefaultColumn(ctx context.Context) (*Column, error) {
+	var column Column
+	has, err := db.GetEngine(ctx).
+		Where("project_id=? AND `default` = ?", p.ID, true).
+		Desc("id").Get(&column)
+	if err != nil {
+		return nil, err
+	}
+
+	if has {
+		return &column, nil
+	}
+
+	// create a default column if none is found
+	column = Column{
+		ProjectID: p.ID,
+		Default:   true,
+		Title:     "Uncategorized",
+		CreatorID: p.CreatorID,
+	}
+	if _, err := db.GetEngine(ctx).Insert(&column); err != nil {
+		return nil, err
+	}
+	return &column, nil
+}
+
+// SetDefaultColumn represents a column for issues not assigned to one
+func SetDefaultColumn(ctx context.Context, projectID, columnID int64) error {
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		if _, err := GetColumn(ctx, columnID); err != nil {
+			return err
+		}
+
+		if _, err := db.GetEngine(ctx).Where(builder.Eq{
+			"project_id": projectID,
+			"`default`":  true,
+		}).Cols("`default`").Update(&Column{Default: false}); err != nil {
+			return err
+		}
+
+		_, err := db.GetEngine(ctx).ID(columnID).
+			Where(builder.Eq{"project_id": projectID}).
+			Cols("`default`").Update(&Column{Default: true})
+		return err
+	})
+}
+
+// UpdateColumnSorting update project column sorting
+func UpdateColumnSorting(ctx context.Context, cl ColumnList) error {
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		for i := range cl {
+			if _, err := db.GetEngine(ctx).ID(cl[i].ID).Cols(
+				"sorting",
+			).Update(cl[i]); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}
+
+func GetColumnsByIDs(ctx context.Context, projectID int64, columnsIDs []int64) (ColumnList, error) {
+	columns := make([]*Column, 0, 5)
+	if err := db.GetEngine(ctx).
+		Where("project_id =?", projectID).
+		In("id", columnsIDs).
+		OrderBy("sorting").Find(&columns); err != nil {
+		return nil, err
+	}
+	return columns, nil
+}
+
+// MoveColumnsOnProject sorts columns in a project
+func MoveColumnsOnProject(ctx context.Context, project *Project, sortedColumnIDs map[int64]int64) error {
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		sess := db.GetEngine(ctx)
+		columnIDs := util.ValuesOfMap(sortedColumnIDs)
+		movedColumns, err := GetColumnsByIDs(ctx, project.ID, columnIDs)
+		if err != nil {
+			return err
+		}
+		if len(movedColumns) != len(sortedColumnIDs) {
+			return errors.New("some columns do not exist")
+		}
+
+		for _, column := range movedColumns {
+			if column.ProjectID != project.ID {
+				return fmt.Errorf("column[%d]'s projectID is not equal to project's ID [%d]", column.ProjectID, project.ID)
+			}
+		}
+
+		for sorting, columnID := range sortedColumnIDs {
+			if _, err := sess.Exec("UPDATE `project_board` SET sorting=? WHERE id=?", sorting, columnID); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}
diff --git a/models/project/column_test.go b/models/project/column_test.go
new file mode 100644
index 0000000..b02a5b5
--- /dev/null
+++ b/models/project/column_test.go
@@ -0,0 +1,128 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package project
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetDefaultColumn(t *testing.T) {
+	require.NoError(t, unittest.PrepareTestDatabase())
+
+	projectWithoutDefault, err := GetProjectByID(db.DefaultContext, 5)
+	require.NoError(t, err)
+
+	// check if default column was added
+	column, err := projectWithoutDefault.GetDefaultColumn(db.DefaultContext)
+	require.NoError(t, err)
+	assert.Equal(t, int64(5), column.ProjectID)
+	assert.Equal(t, "Uncategorized", column.Title)
+
+	projectWithMultipleDefaults, err := GetProjectByID(db.DefaultContext, 6)
+	require.NoError(t, err)
+
+	// check if multiple defaults were removed
+	column, err = projectWithMultipleDefaults.GetDefaultColumn(db.DefaultContext)
+	require.NoError(t, err)
+	assert.Equal(t, int64(6), column.ProjectID)
+	assert.Equal(t, int64(9), column.ID)
+
+	// set 8 as default column
+	require.NoError(t, SetDefaultColumn(db.DefaultContext, column.ProjectID, 8))
+
+	// then 9 will become a non-default column
+	column, err = GetColumn(db.DefaultContext, 9)
+	require.NoError(t, err)
+	assert.Equal(t, int64(6), column.ProjectID)
+	assert.False(t, column.Default)
+}
+
+func Test_moveIssuesToAnotherColumn(t *testing.T) {
+	require.NoError(t, unittest.PrepareTestDatabase())
+
+	column1 := unittest.AssertExistsAndLoadBean(t, &Column{ID: 1, ProjectID: 1})
+
+	issues, err := column1.GetIssues(db.DefaultContext)
+	require.NoError(t, err)
+	assert.Len(t, issues, 1)
+	assert.EqualValues(t, 1, issues[0].ID)
+
+	column2 := unittest.AssertExistsAndLoadBean(t, &Column{ID: 2, ProjectID: 1})
+	issues, err = column2.GetIssues(db.DefaultContext)
+	require.NoError(t, err)
+	assert.Len(t, issues, 1)
+	assert.EqualValues(t, 3, issues[0].ID)
+
+	err = column1.moveIssuesToAnotherColumn(db.DefaultContext, column2)
+	require.NoError(t, err)
+
+	issues, err = column1.GetIssues(db.DefaultContext)
+	require.NoError(t, err)
+	assert.Empty(t, issues)
+
+	issues, err = column2.GetIssues(db.DefaultContext)
+	require.NoError(t, err)
+	assert.Len(t, issues, 2)
+	assert.EqualValues(t, 3, issues[0].ID)
+	assert.EqualValues(t, 0, issues[0].Sorting)
+	assert.EqualValues(t, 1, issues[1].ID)
+	assert.EqualValues(t, 1, issues[1].Sorting)
+}
+
+func Test_MoveColumnsOnProject(t *testing.T) {
+	require.NoError(t, unittest.PrepareTestDatabase())
+
+	project1 := unittest.AssertExistsAndLoadBean(t, &Project{ID: 1})
+	columns, err := project1.GetColumns(db.DefaultContext)
+	require.NoError(t, err)
+	assert.Len(t, columns, 3)
+	assert.EqualValues(t, 0, columns[0].Sorting) // even if there is no default sorting, the code should also work
+	assert.EqualValues(t, 0, columns[1].Sorting)
+	assert.EqualValues(t, 0, columns[2].Sorting)
+
+	err = MoveColumnsOnProject(db.DefaultContext, project1, map[int64]int64{
+		0: columns[1].ID,
+		1: columns[2].ID,
+		2: columns[0].ID,
+	})
+	require.NoError(t, err)
+
+	columnsAfter, err := project1.GetColumns(db.DefaultContext)
+	require.NoError(t, err)
+	assert.Len(t, columnsAfter, 3)
+	assert.EqualValues(t, columns[1].ID, columnsAfter[0].ID)
+	assert.EqualValues(t, columns[2].ID, columnsAfter[1].ID)
+	assert.EqualValues(t, columns[0].ID, columnsAfter[2].ID)
+}
+
+func Test_NewColumn(t *testing.T) {
+	require.NoError(t, unittest.PrepareTestDatabase())
+
+	project1 := unittest.AssertExistsAndLoadBean(t, &Project{ID: 1})
+	columns, err := project1.GetColumns(db.DefaultContext)
+	require.NoError(t, err)
+	assert.Len(t, columns, 3)
+
+	for i := 0; i < maxProjectColumns-3; i++ {
+		err := NewColumn(db.DefaultContext, &Column{
+			Title:     fmt.Sprintf("column-%d", i+4),
+			ProjectID: project1.ID,
+		})
+		require.NoError(t, err)
+	}
+	err = NewColumn(db.DefaultContext, &Column{
+		Title:     "column-21",
+		ProjectID: project1.ID,
+	})
+	require.Error(t, err)
+	assert.True(t, strings.Contains(err.Error(), "maximum number of columns reached"))
+}
diff --git a/models/project/issue.go b/models/project/issue.go
new file mode 100644
index 0000000..3361b53
--- /dev/null
+++ b/models/project/issue.go
@@ -0,0 +1,143 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package project
+
+import (
+	"context"
+	"fmt"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/util"
+)
+
+// ProjectIssue saves relation from issue to a project
+type ProjectIssue struct { //revive:disable-line:exported
+	ID        int64 `xorm:"pk autoincr"`
+	IssueID   int64 `xorm:"INDEX"`
+	ProjectID int64 `xorm:"INDEX"`
+
+	// ProjectColumnID should not be zero since 1.22. If it's zero, the issue will not be displayed on UI and it might result in errors.
+	ProjectColumnID int64 `xorm:"'project_board_id' INDEX"`
+
+	// the sorting order on the column
+	Sorting int64 `xorm:"NOT NULL DEFAULT 0"`
+}
+
+func init() {
+	db.RegisterModel(new(ProjectIssue))
+}
+
+func deleteProjectIssuesByProjectID(ctx context.Context, projectID int64) error {
+	_, err := db.GetEngine(ctx).Where("project_id=?", projectID).Delete(&ProjectIssue{})
+	return err
+}
+
+// NumIssues return counter of all issues assigned to a project
+func (p *Project) NumIssues(ctx context.Context) int {
+	c, err := db.GetEngine(ctx).Table("project_issue").
+		Where("project_id=?", p.ID).
+		GroupBy("issue_id").
+		Cols("issue_id").
+		Count()
+	if err != nil {
+		log.Error("NumIssues: %v", err)
+		return 0
+	}
+	return int(c)
+}
+
+// NumClosedIssues return counter of closed issues assigned to a project
+func (p *Project) NumClosedIssues(ctx context.Context) int {
+	c, err := db.GetEngine(ctx).Table("project_issue").
+		Join("INNER", "issue", "project_issue.issue_id=issue.id").
+		Where("project_issue.project_id=? AND issue.is_closed=?", p.ID, true).
+		Cols("issue_id").
+		Count()
+	if err != nil {
+		log.Error("NumClosedIssues: %v", err)
+		return 0
+	}
+	return int(c)
+}
+
+// NumOpenIssues return counter of open issues assigned to a project
+func (p *Project) NumOpenIssues(ctx context.Context) int {
+	c, err := db.GetEngine(ctx).Table("project_issue").
+		Join("INNER", "issue", "project_issue.issue_id=issue.id").
+		Where("project_issue.project_id=? AND issue.is_closed=?", p.ID, false).
+		Cols("issue_id").
+		Count()
+	if err != nil {
+		log.Error("NumOpenIssues: %v", err)
+		return 0
+	}
+	return int(c)
+}
+
+// MoveIssuesOnProjectColumn moves or keeps issues in a column and sorts them inside that column
+func MoveIssuesOnProjectColumn(ctx context.Context, column *Column, sortedIssueIDs map[int64]int64) error {
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		sess := db.GetEngine(ctx)
+		issueIDs := util.ValuesOfMap(sortedIssueIDs)
+
+		count, err := sess.Table(new(ProjectIssue)).Where("project_id=?", column.ProjectID).In("issue_id", issueIDs).Count()
+		if err != nil {
+			return err
+		}
+		if int(count) != len(sortedIssueIDs) {
+			return fmt.Errorf("all issues have to be added to a project first")
+		}
+
+		for sorting, issueID := range sortedIssueIDs {
+			_, err = sess.Exec("UPDATE `project_issue` SET project_board_id=?, sorting=? WHERE issue_id=?", column.ID, sorting, issueID)
+			if err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}
+
+func (c *Column) moveIssuesToAnotherColumn(ctx context.Context, newColumn *Column) error {
+	if c.ProjectID != newColumn.ProjectID {
+		return fmt.Errorf("columns have to be in the same project")
+	}
+
+	if c.ID == newColumn.ID {
+		return nil
+	}
+
+	res := struct {
+		MaxSorting int64
+		IssueCount int64
+	}{}
+	if _, err := db.GetEngine(ctx).Select("max(sorting) as max_sorting, count(*) as issue_count").
+		Table("project_issue").
+		Where("project_id=?", newColumn.ProjectID).
+		And("project_board_id=?", newColumn.ID).
+		Get(&res); err != nil {
+		return err
+	}
+
+	issues, err := c.GetIssues(ctx)
+	if err != nil {
+		return err
+	}
+	if len(issues) == 0 {
+		return nil
+	}
+
+	nextSorting := util.Iif(res.IssueCount > 0, res.MaxSorting+1, 0)
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		for i, issue := range issues {
+			issue.ProjectColumnID = newColumn.ID
+			issue.Sorting = nextSorting + int64(i)
+			if _, err := db.GetEngine(ctx).ID(issue.ID).Cols("project_board_id", "sorting").Update(issue); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}
diff --git a/models/project/main_test.go b/models/project/main_test.go
new file mode 100644
index 0000000..f4b2d6f
--- /dev/null
+++ b/models/project/main_test.go
@@ -0,0 +1,23 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package project
+
+import (
+	"testing"
+
+	"code.gitea.io/gitea/models/unittest"
+
+	_ "code.gitea.io/gitea/models/repo"
+)
+
+func TestMain(m *testing.M) {
+	unittest.MainTest(m, &unittest.TestOptions{
+		FixtureFiles: []string{
+			"project.yml",
+			"project_board.yml",
+			"project_issue.yml",
+			"repository.yml",
+		},
+	})
+}
diff --git a/models/project/project.go b/models/project/project.go
new file mode 100644
index 0000000..8cebf34
--- /dev/null
+++ b/models/project/project.go
@@ -0,0 +1,451 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package project
+
+import (
+	"context"
+	"fmt"
+	"html/template"
+
+	"code.gitea.io/gitea/models/db"
+	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/optional"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/timeutil"
+	"code.gitea.io/gitea/modules/util"
+
+	"xorm.io/builder"
+)
+
+type (
+	// CardConfig is used to identify the type of column card that is being used
+	CardConfig struct {
+		CardType    CardType
+		Translation string
+	}
+
+	// Type is used to identify the type of project in question and ownership
+	Type uint8
+)
+
+const (
+	// TypeIndividual is a type of project column that is owned by an individual
+	TypeIndividual Type = iota + 1
+
+	// TypeRepository is a project that is tied to a repository
+	TypeRepository
+
+	// TypeOrganization is a project that is tied to an organisation
+	TypeOrganization
+)
+
+// ErrProjectNotExist represents a "ProjectNotExist" kind of error.
+type ErrProjectNotExist struct {
+	ID     int64
+	RepoID int64
+}
+
+// IsErrProjectNotExist checks if an error is a ErrProjectNotExist
+func IsErrProjectNotExist(err error) bool {
+	_, ok := err.(ErrProjectNotExist)
+	return ok
+}
+
+func (err ErrProjectNotExist) Error() string {
+	return fmt.Sprintf("projects does not exist [id: %d]", err.ID)
+}
+
+func (err ErrProjectNotExist) Unwrap() error {
+	return util.ErrNotExist
+}
+
+// ErrProjectColumnNotExist represents a "ErrProjectColumnNotExist" kind of error.
+type ErrProjectColumnNotExist struct {
+	ColumnID int64
+}
+
+// IsErrProjectColumnNotExist checks if an error is a ErrProjectColumnNotExist
+func IsErrProjectColumnNotExist(err error) bool {
+	_, ok := err.(ErrProjectColumnNotExist)
+	return ok
+}
+
+func (err ErrProjectColumnNotExist) Error() string {
+	return fmt.Sprintf("project column does not exist [id: %d]", err.ColumnID)
+}
+
+func (err ErrProjectColumnNotExist) Unwrap() error {
+	return util.ErrNotExist
+}
+
+// Project represents a project
+type Project struct {
+	ID           int64                  `xorm:"pk autoincr"`
+	Title        string                 `xorm:"INDEX NOT NULL"`
+	Description  string                 `xorm:"TEXT"`
+	OwnerID      int64                  `xorm:"INDEX"`
+	Owner        *user_model.User       `xorm:"-"`
+	RepoID       int64                  `xorm:"INDEX"`
+	Repo         *repo_model.Repository `xorm:"-"`
+	CreatorID    int64                  `xorm:"NOT NULL"`
+	IsClosed     bool                   `xorm:"INDEX"`
+	TemplateType TemplateType           `xorm:"'board_type'"` // TODO: rename the column to template_type
+	CardType     CardType
+	Type         Type
+
+	RenderedContent template.HTML `xorm:"-"`
+
+	CreatedUnix    timeutil.TimeStamp `xorm:"INDEX created"`
+	UpdatedUnix    timeutil.TimeStamp `xorm:"INDEX updated"`
+	ClosedDateUnix timeutil.TimeStamp
+}
+
+// Ghost Project is a project which has been deleted
+const GhostProjectID = -1
+
+func (p *Project) IsGhost() bool {
+	return p.ID == GhostProjectID
+}
+
+func (p *Project) LoadOwner(ctx context.Context) (err error) {
+	if p.Owner != nil {
+		return nil
+	}
+	p.Owner, err = user_model.GetUserByID(ctx, p.OwnerID)
+	return err
+}
+
+func (p *Project) LoadRepo(ctx context.Context) (err error) {
+	if p.RepoID == 0 || p.Repo != nil {
+		return nil
+	}
+	p.Repo, err = repo_model.GetRepositoryByID(ctx, p.RepoID)
+	return err
+}
+
+// Link returns the project's relative URL.
+func (p *Project) Link(ctx context.Context) string {
+	if p.OwnerID > 0 {
+		err := p.LoadOwner(ctx)
+		if err != nil {
+			log.Error("LoadOwner: %v", err)
+			return ""
+		}
+		return fmt.Sprintf("%s/-/projects/%d", p.Owner.HomeLink(), p.ID)
+	}
+	if p.RepoID > 0 {
+		err := p.LoadRepo(ctx)
+		if err != nil {
+			log.Error("LoadRepo: %v", err)
+			return ""
+		}
+		return fmt.Sprintf("%s/projects/%d", p.Repo.Link(), p.ID)
+	}
+	return ""
+}
+
+func (p *Project) IconName() string {
+	if p.IsRepositoryProject() {
+		return "octicon-project"
+	}
+	return "octicon-project-symlink"
+}
+
+func (p *Project) IsOrganizationProject() bool {
+	return p.Type == TypeOrganization
+}
+
+func (p *Project) IsRepositoryProject() bool {
+	return p.Type == TypeRepository
+}
+
+func (p *Project) CanBeAccessedByOwnerRepo(ownerID int64, repo *repo_model.Repository) bool {
+	if p.Type == TypeRepository {
+		return repo != nil && p.RepoID == repo.ID // if a project belongs to a repository, then its OwnerID is 0 and can be ignored
+	}
+	return p.OwnerID == ownerID && p.RepoID == 0
+}
+
+func init() {
+	db.RegisterModel(new(Project))
+}
+
+// GetCardConfig retrieves the types of configurations project column cards could have
+func GetCardConfig() []CardConfig {
+	return []CardConfig{
+		{CardTypeTextOnly, "repo.projects.card_type.text_only"},
+		{CardTypeImagesAndText, "repo.projects.card_type.images_and_text"},
+	}
+}
+
+// IsTypeValid checks if a project type is valid
+func IsTypeValid(p Type) bool {
+	switch p {
+	case TypeIndividual, TypeRepository, TypeOrganization:
+		return true
+	default:
+		return false
+	}
+}
+
+// SearchOptions are options for GetProjects
+type SearchOptions struct {
+	db.ListOptions
+	OwnerID  int64
+	RepoID   int64
+	IsClosed optional.Option[bool]
+	OrderBy  db.SearchOrderBy
+	Type     Type
+	Title    string
+}
+
+func (opts SearchOptions) ToConds() builder.Cond {
+	cond := builder.NewCond()
+	if opts.RepoID > 0 {
+		cond = cond.And(builder.Eq{"repo_id": opts.RepoID})
+	}
+	if opts.IsClosed.Has() {
+		cond = cond.And(builder.Eq{"is_closed": opts.IsClosed.Value()})
+	}
+
+	if opts.Type > 0 {
+		cond = cond.And(builder.Eq{"type": opts.Type})
+	}
+	if opts.OwnerID > 0 {
+		cond = cond.And(builder.Eq{"owner_id": opts.OwnerID})
+	}
+
+	if len(opts.Title) != 0 {
+		cond = cond.And(db.BuildCaseInsensitiveLike("title", opts.Title))
+	}
+	return cond
+}
+
+func (opts SearchOptions) ToOrders() string {
+	return opts.OrderBy.String()
+}
+
+func GetSearchOrderByBySortType(sortType string) db.SearchOrderBy {
+	switch sortType {
+	case "oldest":
+		return db.SearchOrderByOldest
+	case "recentupdate":
+		return db.SearchOrderByRecentUpdated
+	case "leastupdate":
+		return db.SearchOrderByLeastUpdated
+	default:
+		return db.SearchOrderByNewest
+	}
+}
+
+// NewProject creates a new Project
+func NewProject(ctx context.Context, p *Project) error {
+	if !IsTemplateTypeValid(p.TemplateType) {
+		p.TemplateType = TemplateTypeNone
+	}
+
+	if !IsCardTypeValid(p.CardType) {
+		p.CardType = CardTypeTextOnly
+	}
+
+	if !IsTypeValid(p.Type) {
+		return util.NewInvalidArgumentErrorf("project type is not valid")
+	}
+
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		if err := db.Insert(ctx, p); err != nil {
+			return err
+		}
+
+		if p.RepoID > 0 {
+			if _, err := db.Exec(ctx, "UPDATE `repository` SET num_projects = num_projects + 1 WHERE id = ?", p.RepoID); err != nil {
+				return err
+			}
+		}
+
+		return createDefaultColumnsForProject(ctx, p)
+	})
+}
+
+// GetProjectByID returns the projects in a repository
+func GetProjectByID(ctx context.Context, id int64) (*Project, error) {
+	p := new(Project)
+
+	has, err := db.GetEngine(ctx).ID(id).Get(p)
+	if err != nil {
+		return nil, err
+	} else if !has {
+		return nil, ErrProjectNotExist{ID: id}
+	}
+
+	return p, nil
+}
+
+// GetProjectForRepoByID returns the projects in a repository
+func GetProjectForRepoByID(ctx context.Context, repoID, id int64) (*Project, error) {
+	p := new(Project)
+	has, err := db.GetEngine(ctx).Where("id=? AND repo_id=?", id, repoID).Get(p)
+	if err != nil {
+		return nil, err
+	} else if !has {
+		return nil, ErrProjectNotExist{ID: id}
+	}
+	return p, nil
+}
+
+// UpdateProject updates project properties
+func UpdateProject(ctx context.Context, p *Project) error {
+	if !IsCardTypeValid(p.CardType) {
+		p.CardType = CardTypeTextOnly
+	}
+
+	_, err := db.GetEngine(ctx).ID(p.ID).Cols(
+		"title",
+		"description",
+		"card_type",
+	).Update(p)
+	return err
+}
+
+func updateRepositoryProjectCount(ctx context.Context, repoID int64) error {
+	if _, err := db.GetEngine(ctx).Exec(builder.Update(
+		builder.Eq{
+			"`num_projects`": builder.Select("count(*)").From("`project`").
+				Where(builder.Eq{"`project`.`repo_id`": repoID}.
+					And(builder.Eq{"`project`.`type`": TypeRepository})),
+		}).From("`repository`").Where(builder.Eq{"id": repoID})); err != nil {
+		return err
+	}
+
+	if _, err := db.GetEngine(ctx).Exec(builder.Update(
+		builder.Eq{
+			"`num_closed_projects`": builder.Select("count(*)").From("`project`").
+				Where(builder.Eq{"`project`.`repo_id`": repoID}.
+					And(builder.Eq{"`project`.`type`": TypeRepository}).
+					And(builder.Eq{"`project`.`is_closed`": true})),
+		}).From("`repository`").Where(builder.Eq{"id": repoID})); err != nil {
+		return err
+	}
+	return nil
+}
+
+// ChangeProjectStatusByRepoIDAndID toggles a project between opened and closed
+func ChangeProjectStatusByRepoIDAndID(ctx context.Context, repoID, projectID int64, isClosed bool) error {
+	ctx, committer, err := db.TxContext(ctx)
+	if err != nil {
+		return err
+	}
+	defer committer.Close()
+
+	p := new(Project)
+
+	has, err := db.GetEngine(ctx).ID(projectID).Where("repo_id = ?", repoID).Get(p)
+	if err != nil {
+		return err
+	} else if !has {
+		return ErrProjectNotExist{ID: projectID, RepoID: repoID}
+	}
+
+	if err := changeProjectStatus(ctx, p, isClosed); err != nil {
+		return err
+	}
+
+	return committer.Commit()
+}
+
+// ChangeProjectStatus toggle a project between opened and closed
+func ChangeProjectStatus(ctx context.Context, p *Project, isClosed bool) error {
+	ctx, committer, err := db.TxContext(ctx)
+	if err != nil {
+		return err
+	}
+	defer committer.Close()
+
+	if err := changeProjectStatus(ctx, p, isClosed); err != nil {
+		return err
+	}
+
+	return committer.Commit()
+}
+
+func changeProjectStatus(ctx context.Context, p *Project, isClosed bool) error {
+	p.IsClosed = isClosed
+	p.ClosedDateUnix = timeutil.TimeStampNow()
+	count, err := db.GetEngine(ctx).ID(p.ID).Where("repo_id = ? AND is_closed = ?", p.RepoID, !isClosed).Cols("is_closed", "closed_date_unix").Update(p)
+	if err != nil {
+		return err
+	}
+	if count < 1 {
+		return nil
+	}
+
+	return updateRepositoryProjectCount(ctx, p.RepoID)
+}
+
+// DeleteProjectByID deletes a project from a repository. if it's not in a database
+// transaction, it will start a new database transaction
+func DeleteProjectByID(ctx context.Context, id int64) error {
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		p, err := GetProjectByID(ctx, id)
+		if err != nil {
+			if IsErrProjectNotExist(err) {
+				return nil
+			}
+			return err
+		}
+
+		if err := deleteProjectIssuesByProjectID(ctx, id); err != nil {
+			return err
+		}
+
+		if err := deleteColumnByProjectID(ctx, id); err != nil {
+			return err
+		}
+
+		if _, err = db.GetEngine(ctx).ID(p.ID).Delete(new(Project)); err != nil {
+			return err
+		}
+
+		return updateRepositoryProjectCount(ctx, p.RepoID)
+	})
+}
+
+func DeleteProjectByRepoID(ctx context.Context, repoID int64) error {
+	switch {
+	case setting.Database.Type.IsSQLite3():
+		if _, err := db.GetEngine(ctx).Exec("DELETE FROM project_issue WHERE project_issue.id IN (SELECT project_issue.id FROM project_issue INNER JOIN project WHERE project.id = project_issue.project_id AND project.repo_id = ?)", repoID); err != nil {
+			return err
+		}
+		if _, err := db.GetEngine(ctx).Exec("DELETE FROM project_board WHERE project_board.id IN (SELECT project_board.id FROM project_board INNER JOIN project WHERE project.id = project_board.project_id AND project.repo_id = ?)", repoID); err != nil {
+			return err
+		}
+		if _, err := db.GetEngine(ctx).Table("project").Where("repo_id = ? ", repoID).Delete(&Project{}); err != nil {
+			return err
+		}
+	case setting.Database.Type.IsPostgreSQL():
+		if _, err := db.GetEngine(ctx).Exec("DELETE FROM project_issue USING project WHERE project.id = project_issue.project_id AND project.repo_id = ? ", repoID); err != nil {
+			return err
+		}
+		if _, err := db.GetEngine(ctx).Exec("DELETE FROM project_board USING project WHERE project.id = project_board.project_id AND project.repo_id = ? ", repoID); err != nil {
+			return err
+		}
+		if _, err := db.GetEngine(ctx).Table("project").Where("repo_id = ? ", repoID).Delete(&Project{}); err != nil {
+			return err
+		}
+	default:
+		if _, err := db.GetEngine(ctx).Exec("DELETE project_issue FROM project_issue INNER JOIN project ON project.id = project_issue.project_id WHERE project.repo_id = ? ", repoID); err != nil {
+			return err
+		}
+		if _, err := db.GetEngine(ctx).Exec("DELETE project_board FROM project_board INNER JOIN project ON project.id = project_board.project_id WHERE project.repo_id = ? ", repoID); err != nil {
+			return err
+		}
+		if _, err := db.GetEngine(ctx).Table("project").Where("repo_id = ? ", repoID).Delete(&Project{}); err != nil {
+			return err
+		}
+	}
+
+	return updateRepositoryProjectCount(ctx, repoID)
+}
diff --git a/models/project/project_test.go b/models/project/project_test.go
new file mode 100644
index 0000000..8c660b9
--- /dev/null
+++ b/models/project/project_test.go
@@ -0,0 +1,124 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package project
+
+import (
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+	"code.gitea.io/gitea/modules/timeutil"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestIsProjectTypeValid(t *testing.T) {
+	const UnknownType Type = 15
+
+	cases := []struct {
+		typ   Type
+		valid bool
+	}{
+		{TypeIndividual, true},
+		{TypeRepository, true},
+		{TypeOrganization, true},
+		{UnknownType, false},
+	}
+
+	for _, v := range cases {
+		assert.Equal(t, v.valid, IsTypeValid(v.typ))
+	}
+}
+
+func TestGetProjects(t *testing.T) {
+	require.NoError(t, unittest.PrepareTestDatabase())
+
+	projects, err := db.Find[Project](db.DefaultContext, SearchOptions{RepoID: 1})
+	require.NoError(t, err)
+
+	// 1 value for this repo exists in the fixtures
+	assert.Len(t, projects, 1)
+
+	projects, err = db.Find[Project](db.DefaultContext, SearchOptions{RepoID: 3})
+	require.NoError(t, err)
+
+	// 1 value for this repo exists in the fixtures
+	assert.Len(t, projects, 1)
+}
+
+func TestProject(t *testing.T) {
+	require.NoError(t, unittest.PrepareTestDatabase())
+
+	project := &Project{
+		Type:         TypeRepository,
+		TemplateType: TemplateTypeBasicKanban,
+		CardType:     CardTypeTextOnly,
+		Title:        "New Project",
+		RepoID:       1,
+		CreatedUnix:  timeutil.TimeStampNow(),
+		CreatorID:    2,
+	}
+
+	require.NoError(t, NewProject(db.DefaultContext, project))
+
+	_, err := GetProjectByID(db.DefaultContext, project.ID)
+	require.NoError(t, err)
+
+	// Update project
+	project.Title = "Updated title"
+	require.NoError(t, UpdateProject(db.DefaultContext, project))
+
+	projectFromDB, err := GetProjectByID(db.DefaultContext, project.ID)
+	require.NoError(t, err)
+
+	assert.Equal(t, project.Title, projectFromDB.Title)
+
+	require.NoError(t, ChangeProjectStatus(db.DefaultContext, project, true))
+
+	// Retrieve from DB afresh to check if it is truly closed
+	projectFromDB, err = GetProjectByID(db.DefaultContext, project.ID)
+	require.NoError(t, err)
+
+	assert.True(t, projectFromDB.IsClosed)
+}
+
+func TestProjectsSort(t *testing.T) {
+	require.NoError(t, unittest.PrepareTestDatabase())
+
+	tests := []struct {
+		sortType string
+		wants    []int64
+	}{
+		{
+			sortType: "default",
+			wants:    []int64{1, 3, 2, 6, 5, 4},
+		},
+		{
+			sortType: "oldest",
+			wants:    []int64{4, 5, 6, 2, 3, 1},
+		},
+		{
+			sortType: "recentupdate",
+			wants:    []int64{1, 3, 2, 6, 5, 4},
+		},
+		{
+			sortType: "leastupdate",
+			wants:    []int64{4, 5, 6, 2, 3, 1},
+		},
+	}
+
+	for _, tt := range tests {
+		projects, count, err := db.FindAndCount[Project](db.DefaultContext, SearchOptions{
+			OrderBy: GetSearchOrderByBySortType(tt.sortType),
+		})
+		require.NoError(t, err)
+		assert.EqualValues(t, int64(6), count)
+		if assert.Len(t, projects, 6) {
+			for i := range projects {
+				assert.EqualValues(t, tt.wants[i], projects[i].ID)
+			}
+		}
+	}
+}
diff --git a/models/project/template.go b/models/project/template.go
new file mode 100644
index 0000000..06d5d2a
--- /dev/null
+++ b/models/project/template.go
@@ -0,0 +1,45 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package project
+
+type (
+	// TemplateType is used to represent a project template type
+	TemplateType uint8
+
+	// TemplateConfig is used to identify the template type of project that is being created
+	TemplateConfig struct {
+		TemplateType TemplateType
+		Translation  string
+	}
+)
+
+const (
+	// TemplateTypeNone is a project template type that has no predefined columns
+	TemplateTypeNone TemplateType = iota
+
+	// TemplateTypeBasicKanban is a project template type that has basic predefined columns
+	TemplateTypeBasicKanban
+
+	// TemplateTypeBugTriage is a project template type that has predefined columns suited to hunting down bugs
+	TemplateTypeBugTriage
+)
+
+// GetTemplateConfigs retrieves the template configs of configurations project columns could have
+func GetTemplateConfigs() []TemplateConfig {
+	return []TemplateConfig{
+		{TemplateTypeNone, "repo.projects.type.none"},
+		{TemplateTypeBasicKanban, "repo.projects.type.basic_kanban"},
+		{TemplateTypeBugTriage, "repo.projects.type.bug_triage"},
+	}
+}
+
+// IsTemplateTypeValid checks if the project template type is valid
+func IsTemplateTypeValid(p TemplateType) bool {
+	switch p {
+	case TemplateTypeNone, TemplateTypeBasicKanban, TemplateTypeBugTriage:
+		return true
+	default:
+		return false
+	}
+}