Git remote fetch and push operations (#3096)

src/blenderbim/blenderbim/bim/module/ifcgit/__init__.py

@@ -28,7 +28,9 @@ classes = (
     operator.DiscardUncommitted,
     operator.DisplayRevision,
     operator.DisplayUncommitted,
+    operator.Fetch,
     operator.Merge,
+    operator.Push,
     operator.RefreshGit,
     operator.SwitchRevision,
     prop.IfcGitTag,

src/blenderbim/blenderbim/bim/module/ifcgit/data.py

@@ -19,7 +19,10 @@ class IfcGitData:
     def load(cls):
         cls.data = {
             "repo": cls.repo(),
+            "remotes": cls.remotes(),
             "branch_names": cls.branch_names(),
+            "remote_names": cls.remote_names(),
+            "remote_urls": cls.remote_urls(),
             "path_ifc": cls.path_ifc(),
             "branches_by_hexsha": cls.branches_by_hexsha(),
             "tags_by_hexsha": cls.tags_by_hexsha(),
@@ -42,10 +45,28 @@ class IfcGitData:
                 return tool.IfcGit.repo_from_path(path_ifc)
         return None
 
+    @classmethod
+    def remotes(cls):
+        if cls.repo():
+            return cls.repo().remotes
+        return None
+
     @classmethod
     def branch_names(cls):
         return []
 
+    @classmethod
+    def remote_names(cls):
+        return []
+
+    @classmethod
+    def remote_urls(cls):
+        result = {}
+        if cls.repo():
+            for remote in cls.repo().remotes:
+                result[remote.name] = remote.url
+        return result
+
     @classmethod
     def path_ifc(cls):
         path_ifc = tool.Ifc.get_path()

src/blenderbim/blenderbim/bim/module/ifcgit/operator.py

@@ -246,3 +246,35 @@ class Merge(bpy.types.Operator):
             return {"FINISHED"}
         else:
             return {"CANCELLED"}
+
+
+class Push(bpy.types.Operator):
+    """Pushes the working branch to selected remote"""
+
+    bl_label = "Push working branch"
+    bl_idname = "ifcgit.push"
+    bl_options = {"REGISTER"}
+
+    def execute(self, context):
+
+        props = context.scene.IfcGitProperties
+        repo = IfcGitData.data["repo"]
+        remote = repo.remotes[props.select_remote]
+        remote.push()
+        return {"FINISHED"}
+
+
+class Fetch(bpy.types.Operator):
+    """Fetches from the selected remote"""
+
+    bl_label = "Fetch from remote"
+    bl_idname = "ifcgit.fetch"
+    bl_options = {"REGISTER"}
+
+    def execute(self, context):
+
+        props = context.scene.IfcGitProperties
+        repo = IfcGitData.data["repo"]
+        remote = repo.remotes[props.select_remote]
+        remote.fetch()
+        return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/ifcgit/prop.py

@@ -21,9 +21,25 @@ def git_branches(self, context):
         IfcGitData.data["branch_names"].remove("main")
         IfcGitData.data["branch_names"] = ["main"] + IfcGitData.data["branch_names"]
 
+    if IfcGitData.data["remotes"]:
+        props = context.scene.IfcGitProperties
+        IfcGitData.data["branch_names"] += [r.name for r in IfcGitData.data["remotes"][props.select_remote].refs]
+
     return [(myname, myname, myname) for myname in IfcGitData.data["branch_names"]]
 
 
+def git_remotes(self, context):
+    """remotes enum"""
+
+    IfcGitData.data["remote_names"] = sorted([remote.name for remote in IfcGitData.data["remotes"]])
+
+    if "origin" in IfcGitData.data["remote_names"]:
+        IfcGitData.data["remote_names"].remove("origin")
+        IfcGitData.data["remote_names"] = ["origin"] + IfcGitData.data["remote_names"]
+
+    return [(myname, myname, myname) for myname in IfcGitData.data["remote_names"]]
+
+
 def update_revlist(self, context):
     """wrapper to trigger update of the revision list"""
 
@@ -109,6 +125,7 @@ class IfcGitProperties(PropertyGroup):
         subtype="DIR_PATH",
     )
     display_branch: EnumProperty(items=git_branches, update=update_revlist)
+    select_remote: EnumProperty(items=git_remotes)
     ifcgit_filter: EnumProperty(
         items=[
             ("all", "All", "All revisions"),

src/blenderbim/blenderbim/bim/module/ifcgit/ui.py

@@ -154,13 +154,23 @@ class IFCGIT_PT_panel(bpy.types.Panel):
             # TODO
             # item.operator("ifcgit.delete_tag", icon="PANEL_CLOSE")
 
-        row = layout.row()
+        box = layout.box()
+        row = box.row()
         row.prop(props, "new_tag_name")
-        row = layout.row()
+        row = box.row()
         row.prop(props, "new_tag_message")
-        row = layout.row()
+        row = box.row()
         row.operator("ifcgit.add_tag", icon="GREASEPENCIL")
 
+        if IfcGitData.data["remotes"]:
+            row = layout.row()
+            row.prop(props, "select_remote", text="Select remote")
+            urls = IfcGitData.data["remote_urls"]
+            row.label(text=urls[props.select_remote])
+            row = layout.row()
+            row.operator("ifcgit.push", icon="EXPERIMENTAL")
+            row.operator("ifcgit.fetch", icon="IMPORT")
+
 
 class COMMIT_UL_List(bpy.types.UIList):
     """List of Git commits"""

src/blenderbim/docs/users/git_support.rst

@@ -156,6 +156,39 @@ optional message text.
     Similar to commit messages, tag messages should be 50 characters or less,
     though there is no practical limit.
 
+Remote operations
+-----------------
+
+Git is a *distributed revision control system*, your local repository can be a
+version of a remote repository and vice-versa. This is conceptually similar to
+local branching except this remote repository could belong to someone else or
+could be hosted by an online Git-forge service.
+
+Your repository can have multiple remote repositories registered, each
+can have potentially multiple branches.
+
+BlenderBIM allows you to make a local *clone* of a remote repository.  You will
+need to provide a URL *origin* to fetch, and an empty local folder to become
+the local repository.
+
+The *Fetch* operator retrieves new data from the remote repository. This isn't
+automatically merged, each branch fetched from the remote repository appears as
+a branch that can be browsed, switched-to or merged just like a local branch.
+These remote branches have prefixed names, eg. `origin/main`.
+
+Once you have committed changes to your local repository, the *Push* operator
+tries to update the remote branch using changes from the selected local branch.
+
+.. Warning::
+
+    Remote repositories can be accessed in multiple ways; ssh, ftp or https
+    protocols, for example, can require authentication. This authentication may
+    expect you to generate and upload ssh keys, store API tokens, save
+    username/password pairs, or use some other form of credential.
+    BlenderBIM can't configure these credentials for you, follow the
+    configuration instructions provided by your online service before trying
+    actions that require authentication.
+
 Using other Git tools
 ---------------------