Refactor: Remove Dependencies from Migration v111 (#11646)

* Refactor: Remove Dependencys from Migration v111

* Update models/migrations/v111.go

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

models/migrations/v111.go

@@ -5,35 +5,361 @@
 package migrations
 
 import (
-	"code.gitea.io/gitea/models"
+	"fmt"
 
 	"xorm.io/xorm"
 )
 
 func addBranchProtectionCanPushAndEnableWhitelist(x *xorm.Engine) error {
-
 	type ProtectedBranch struct {
-		CanPush                  bool  `xorm:"NOT NULL DEFAULT false"`
-		EnableApprovalsWhitelist bool  `xorm:"NOT NULL DEFAULT false"`
-		RequiredApprovals        int64 `xorm:"NOT NULL DEFAULT 0"`
+		CanPush                   bool    `xorm:"NOT NULL DEFAULT false"`
+		EnableApprovalsWhitelist  bool    `xorm:"NOT NULL DEFAULT false"`
+		ApprovalsWhitelistUserIDs []int64 `xorm:"JSON TEXT"`
+		ApprovalsWhitelistTeamIDs []int64 `xorm:"JSON TEXT"`
+		RequiredApprovals         int64   `xorm:"NOT NULL DEFAULT 0"`
+	}
+
+	type User struct {
+		ID   int64 `xorm:"pk autoincr"`
+		Type int
+
+		// Permissions
+		IsAdmin      bool
+		IsRestricted bool `xorm:"NOT NULL DEFAULT false"`
+		Visibility   int  `xorm:"NOT NULL DEFAULT 0"`
 	}
 
 	type Review struct {
 		ID       int64 `xorm:"pk autoincr"`
 		Official bool  `xorm:"NOT NULL DEFAULT false"`
-	}
 
-	sess := x.NewSession()
-	defer sess.Close()
+		ReviewerID int64 `xorm:"index"`
+		IssueID    int64 `xorm:"index"`
+	}
 
-	if err := sess.Sync2(new(ProtectedBranch)); err != nil {
+	if err := x.Sync2(new(ProtectedBranch)); err != nil {
 		return err
 	}
 
-	if err := sess.Sync2(new(Review)); err != nil {
+	if err := x.Sync2(new(Review)); err != nil {
 		return err
 	}
 
+	const (
+		// ReviewTypeApprove approves changes
+		ReviewTypeApprove int = 1
+		// ReviewTypeReject gives feedback blocking merge
+		ReviewTypeReject int = 3
+
+		// VisibleTypePublic Visible for everyone
+		VisibleTypePublic int = 0
+		// VisibleTypePrivate Visible only for organization's members
+		VisibleTypePrivate int = 2
+
+		// UnitTypeCode is unit type code
+		UnitTypeCode int = 1
+
+		// AccessModeNone no access
+		AccessModeNone int = 0
+		// AccessModeRead read access
+		AccessModeRead int = 1
+		// AccessModeWrite write access
+		AccessModeWrite int = 2
+		// AccessModeOwner owner access
+		AccessModeOwner int = 4
+	)
+
+	// Repository represents a git repository.
+	type Repository struct {
+		ID      int64 `xorm:"pk autoincr"`
+		OwnerID int64 `xorm:"UNIQUE(s) index"`
+
+		IsPrivate bool `xorm:"INDEX"`
+	}
+
+	type PullRequest struct {
+		ID int64 `xorm:"pk autoincr"`
+
+		BaseRepoID int64 `xorm:"INDEX"`
+		BaseBranch string
+	}
+
+	// RepoUnit describes all units of a repository
+	type RepoUnit struct {
+		ID     int64
+		RepoID int64 `xorm:"INDEX(s)"`
+		Type   int   `xorm:"INDEX(s)"`
+	}
+
+	type Permission struct {
+		AccessMode int
+		Units      []*RepoUnit
+		UnitsMode  map[int]int
+	}
+
+	type TeamUser struct {
+		ID     int64 `xorm:"pk autoincr"`
+		TeamID int64 `xorm:"UNIQUE(s)"`
+		UID    int64 `xorm:"UNIQUE(s)"`
+	}
+
+	type Collaboration struct {
+		ID     int64 `xorm:"pk autoincr"`
+		RepoID int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
+		UserID int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
+		Mode   int   `xorm:"DEFAULT 2 NOT NULL"`
+	}
+
+	type Access struct {
+		ID     int64 `xorm:"pk autoincr"`
+		UserID int64 `xorm:"UNIQUE(s)"`
+		RepoID int64 `xorm:"UNIQUE(s)"`
+		Mode   int
+	}
+
+	type TeamUnit struct {
+		ID     int64 `xorm:"pk autoincr"`
+		OrgID  int64 `xorm:"INDEX"`
+		TeamID int64 `xorm:"UNIQUE(s)"`
+		Type   int   `xorm:"UNIQUE(s)"`
+	}
+
+	// Team represents a organization team.
+	type Team struct {
+		ID        int64 `xorm:"pk autoincr"`
+		OrgID     int64 `xorm:"INDEX"`
+		Authorize int
+	}
+
+	// getUserRepoPermission static function based on models.IsOfficialReviewer at 5d78792385
+	getUserRepoPermission := func(sess *xorm.Session, repo *Repository, user *User) (Permission, error) {
+		var perm Permission
+
+		repoOwner := new(User)
+		has, err := sess.ID(repo.OwnerID).Get(repoOwner)
+		if err != nil || !has {
+			return perm, err
+		}
+
+		// Prevent strangers from checking out public repo of private orginization
+		// Allow user if they are collaborator of a repo within a private orginization but not a member of the orginization itself
+		hasOrgVisible := true
+		// Not SignedUser
+		if user == nil {
+			hasOrgVisible = repoOwner.Visibility == VisibleTypePublic
+		} else if !user.IsAdmin {
+			isUserPartOfOrg, err := sess.
+				Where("uid=?", user.ID).
+				And("org_id=?", repoOwner.ID).
+				Table("org_user").
+				Exist()
+			if err != nil {
+				hasOrgVisible = false
+			}
+			if (repoOwner.Visibility == VisibleTypePrivate || user.IsRestricted) && !isUserPartOfOrg {
+				hasOrgVisible = false
+			}
+		}
+
+		isCollaborator, err := sess.Get(&Collaboration{RepoID: repo.ID, UserID: user.ID})
+		if err != nil {
+			return perm, err
+		}
+
+		if repoOwner.Type == 1 && !hasOrgVisible && !isCollaborator {
+			perm.AccessMode = AccessModeNone
+			return perm, err
+		}
+
+		var units []*RepoUnit
+		if err := sess.Where("repo_id = ?", repo.ID).Find(&units); err != nil {
+			return perm, err
+		}
+		perm.Units = units
+
+		// anonymous visit public repo
+		if user == nil {
+			perm.AccessMode = AccessModeRead
+			return perm, err
+		}
+
+		// Admin or the owner has super access to the repository
+		if user.IsAdmin || user.ID == repo.OwnerID {
+			perm.AccessMode = AccessModeOwner
+			return perm, err
+		}
+
+		accessLevel := func(user *User, repo *Repository) (int, error) {
+			mode := AccessModeNone
+			var userID int64
+			restricted := false
+
+			if user != nil {
+				userID = user.ID
+				restricted = user.IsRestricted
+			}
+
+			if !restricted && !repo.IsPrivate {
+				mode = AccessModeRead
+			}
+
+			if userID == 0 {
+				return mode, nil
+			}
+
+			if userID == repo.OwnerID {
+				return AccessModeOwner, nil
+			}
+
+			a := &Access{UserID: userID, RepoID: repo.ID}
+			if has, err := sess.Get(a); !has || err != nil {
+				return mode, err
+			}
+			return a.Mode, nil
+		}
+
+		// plain user
+		perm.AccessMode, err = accessLevel(user, repo)
+		if err != nil {
+			return perm, err
+		}
+
+		// If Owner is no Org
+		if repoOwner.Type != 1 {
+			return perm, err
+		}
+
+		perm.UnitsMode = make(map[int]int)
+
+		// Collaborators on organization
+		if isCollaborator {
+			for _, u := range units {
+				perm.UnitsMode[u.Type] = perm.AccessMode
+			}
+		}
+
+		// get units mode from teams
+		var teams []*Team
+		err = sess.
+			Join("INNER", "team_user", "team_user.team_id = team.id").
+			Join("INNER", "team_repo", "team_repo.team_id = team.id").
+			Where("team.org_id = ?", repo.OwnerID).
+			And("team_user.uid=?", user.ID).
+			And("team_repo.repo_id=?", repo.ID).
+			Find(&teams)
+		if err != nil {
+			return perm, err
+		}
+
+		// if user in an owner team
+		for _, team := range teams {
+			if team.Authorize >= AccessModeOwner {
+				perm.AccessMode = AccessModeOwner
+				perm.UnitsMode = nil
+				return perm, err
+			}
+		}
+
+		for _, u := range units {
+			var found bool
+			for _, team := range teams {
+
+				var teamU []*TeamUnit
+				var unitEnabled bool
+				err = sess.Where("team_id = ?", team.ID).Find(&teamU)
+
+				for _, tu := range teamU {
+					if tu.Type == u.Type {
+						unitEnabled = true
+						break
+					}
+				}
+
+				if unitEnabled {
+					m := perm.UnitsMode[u.Type]
+					if m < team.Authorize {
+						perm.UnitsMode[u.Type] = team.Authorize
+					}
+					found = true
+				}
+			}
+
+			// for a public repo on an organization, a non-restricted user has read permission on non-team defined units.
+			if !found && !repo.IsPrivate && !user.IsRestricted {
+				if _, ok := perm.UnitsMode[u.Type]; !ok {
+					perm.UnitsMode[u.Type] = AccessModeRead
+				}
+			}
+		}
+
+		// remove no permission units
+		perm.Units = make([]*RepoUnit, 0, len(units))
+		for t := range perm.UnitsMode {
+			for _, u := range units {
+				if u.Type == t {
+					perm.Units = append(perm.Units, u)
+				}
+			}
+		}
+
+		return perm, err
+	}
+
+	// isOfficialReviewer static function based on 5d78792385
+	isOfficialReviewer := func(sess *xorm.Session, issueID int64, reviewer *User) (bool, error) {
+		pr := new(PullRequest)
+		has, err := sess.ID(issueID).Get(pr)
+		if err != nil {
+			return false, err
+		} else if !has {
+			return false, fmt.Errorf("PullRequest for issueID %d not exist", issueID)
+		}
+
+		baseRepo := new(Repository)
+		has, err = sess.ID(pr.BaseRepoID).Get(baseRepo)
+		if err != nil {
+			return false, err
+		} else if !has {
+			return false, fmt.Errorf("baseRepo with id %d not exist", pr.BaseRepoID)
+		}
+		protectedBranch := new(ProtectedBranch)
+		has, err = sess.Where("repo_id=? AND branch_name=?", baseRepo.ID, pr.BaseBranch).Get(protectedBranch)
+		if err != nil {
+			return false, err
+		}
+		if !has {
+			return false, nil
+		}
+
+		if !protectedBranch.EnableApprovalsWhitelist {
+
+			perm, err := getUserRepoPermission(sess, baseRepo, reviewer)
+			if err != nil {
+				return false, err
+			}
+			if perm.UnitsMode == nil {
+				for _, u := range perm.Units {
+					if u.Type == UnitTypeCode {
+						return AccessModeWrite <= perm.AccessMode, nil
+					}
+				}
+				return false, nil
+			}
+			return AccessModeWrite <= perm.UnitsMode[UnitTypeCode], nil
+		}
+		for _, id := range protectedBranch.ApprovalsWhitelistUserIDs {
+			if id == reviewer.ID {
+				return true, nil
+			}
+		}
+
+		// isUserInTeams
+		return sess.Where("uid=?", reviewer.ID).In("team_id", protectedBranch.ApprovalsWhitelistTeamIDs).Exist(new(TeamUser))
+	}
+
+	sess := x.NewSession()
+	defer sess.Close()
+
 	if _, err := sess.Exec("UPDATE `protected_branch` SET `enable_whitelist` = ? WHERE enable_whitelist IS NULL", false); err != nil {
 		return err
 	}
@@ -58,21 +384,24 @@ func addBranchProtectionCanPushAndEnableWhitelist(x *xorm.Engine) error {
 	totalPages := totalIssues / pageSize
 
 	// Find latest review of each user in each pull request, and set official field if appropriate
-	reviews := []*models.Review{}
+	reviews := []*Review{}
 	var page int64
 	for page = 0; page <= totalPages; page++ {
 		if err := sess.SQL("SELECT * FROM review WHERE id IN (SELECT max(id) as id FROM review WHERE issue_id > ? AND issue_id <= ? AND type in (?, ?) GROUP BY issue_id, reviewer_id)",
-			page*pageSize, (page+1)*pageSize, models.ReviewTypeApprove, models.ReviewTypeReject).
+			page*pageSize, (page+1)*pageSize, ReviewTypeApprove, ReviewTypeReject).
 			Find(&reviews); err != nil {
 			return err
 		}
 
 		for _, review := range reviews {
-			if err := review.LoadAttributes(); err != nil {
-				// Error might occur if user or issue doesn't exist, ignore it.
+			reviewer := new(User)
+			has, err := sess.ID(review.ReviewerID).Get(reviewer)
+			if err != nil || !has {
+				// Error might occur if user doesn't exist, ignore it.
 				continue
 			}
-			official, err := models.IsOfficialReviewer(review.Issue, review.Reviewer)
+
+			official, err := isOfficialReviewer(sess, review.IssueID, reviewer)
 			if err != nil {
 				// Branch might not be proteced or other error, ignore it.
 				continue