From 347120d900cd2b62aa7f1be6d44de00afabc192f Mon Sep 17 00:00:00 2001
From: Kasi <KasiR1995@hotmail.co.uk>
Date: Fri, 8 Jun 2018 14:26:23 +0100
Subject: [PATCH] Started on Git-Trees api

---
 routers/api/v1/api.go       |  8 ++++
 routers/api/v1/repo/tree.go | 89 +++++++++++++++++++++++++++++++++++++
 2 files changed, 97 insertions(+)
 create mode 100644 routers/api/v1/repo/tree.go

diff --git a/routers/api/v1/api.go b/routers/api/v1/api.go
index 466d6b06f..d36b1c6d6 100644
--- a/routers/api/v1/api.go
+++ b/routers/api/v1/api.go
@@ -377,6 +377,11 @@ func RegisterRoutes(m *macaron.Macaron) {
 
 			m.Group("/:username/:reponame", func() {
 				m.Combo("").Get(repo.Get).Delete(reqToken(), repo.Delete)
+
+				m.Group("/trees", func() {
+					m.Combo("/:sha", context.RepoRef()).Get(repo.GetTree)
+				})
+
 				m.Group("/hooks", func() {
 					m.Combo("").Get(repo.ListHooks).
 						Post(bind(api.CreateHookOption{}), repo.CreateHook)
@@ -387,6 +392,9 @@ func RegisterRoutes(m *macaron.Macaron) {
 						m.Post("/tests", context.RepoRef(), repo.TestHook)
 					})
 				}, reqToken(), reqRepoWriter())
+
+
+
 				m.Group("/collaborators", func() {
 					m.Get("", repo.ListCollaborators)
 					m.Combo("/:collaborator").Get(repo.IsCollaborator).
diff --git a/routers/api/v1/repo/tree.go b/routers/api/v1/repo/tree.go
new file mode 100644
index 000000000..8ba0e01a5
--- /dev/null
+++ b/routers/api/v1/repo/tree.go
@@ -0,0 +1,89 @@
+package repo
+
+import (
+	"code.gitea.io/gitea/modules/context"
+	"fmt"
+	_"code.gitea.io/git"
+	"code.gitea.io/gitea/modules/setting"
+	"strings"
+)
+
+type TreeEntry struct {
+	Path		string 		`json:"path"`
+	Mode		string 		`json:"mode"`
+	Type		string 		`json:"type"`
+	Size		int64 		`json:"size,omitempty"`
+	SHA		string		`json:"sha"`
+	URL		string		`json:"url"`
+}
+
+type Tree struct {
+	SHA		string		`json:"sha"`
+	URL		string		`json:"url"`
+	Entries		[]TreeEntry	`json:"tree,omitempty"`
+	Truncated 	bool		`json:"truncated"`
+}
+
+func GetTree(ctx *context.APIContext) {
+	sha := ctx.Params("sha")
+	if len(sha) == 0 {
+		ctx.Error(400, "sha not provided", nil)
+		return
+	}
+	Temp := GetTreeBySHA(ctx, nil, "", sha, ctx.QueryBool("recursive"))
+	if Temp != nil {
+		ctx.JSON(200, Temp)
+	} else {
+		ctx.Error(400, "sha invalid", nil)
+	}
+
+}
+
+func GetTreeBySHA(ctx *context.APIContext, tree *Tree, CurrentPath string, sha string, recursive bool) *Tree {
+	GitTree, err := ctx.Repo.GitRepo.GetTree(sha)
+	if err != nil {
+		return tree
+	}
+	RepoID := strings.TrimRight(setting.AppURL, "/") + "/api/v1/repos/" + ctx.Repo.Repository.Owner.Name + "/" + ctx.Repo.Repository.Name
+	if tree == nil {
+		tree = new(Tree)
+		if GitTree != nil {
+			tree.SHA = GitTree.ID.String()
+			tree.URL = RepoID + "/trees/" + tree.SHA;
+		}
+	}
+	if GitTree == nil {
+		return tree
+	}
+	Trees, err := GitTree.ListEntries()
+	if err != nil {
+		return tree
+	}
+	if len(CurrentPath) != 0 {
+		CurrentPath += "/"
+	}
+	for e := range Trees {
+		if len(tree.Entries) > 1000 {
+			tree.Truncated = true
+			break
+		}
+		E_URL := RepoID
+		if Trees[e].IsDir() {
+			E_URL += "/trees/"
+		} else {
+			E_URL += "/blobs/"
+		}
+		tree.Entries = append(tree.Entries, TreeEntry{
+			CurrentPath + Trees[e].Name(),
+			fmt.Sprintf("%06x", Trees[e].Mode()),
+			string(Trees[e].Type),
+			Trees[e].Size(),
+			Trees[e].ID.String(),
+			E_URL + Trees[e].ID.String()})
+
+		if recursive && Trees[e].IsDir() {
+			tree = GetTreeBySHA(ctx, tree, CurrentPath + Trees[e].Name(), Trees[e].ID.String(), recursive)
+		}
+	}
+	return tree
+}