From ab8c5d16929d5d944d4d01d5b22590a879a8b1bf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adrian=20Schr=C3=B6ter?= <adrian@reiser.suse.de>
Date: Thu, 29 Sep 2022 16:46:41 +0200
Subject: [PATCH] add create-pbuild-config(cpc) command

which allows to create a working config for pbuild tool based on OBS server side data

The cross build support is not yet done
---
 NEWS               |  4 ++++
 osc/commandline.py | 29 +++++++++++++++++++++++++++++
 osc/core.py        | 33 +++++++++++++++++++++++++++++++++
 osc/oscerr.py      |  9 +++++++++
 4 files changed, 75 insertions(+)

diff --git a/NEWS b/NEWS
index f6ec0d4e..088dde01 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,7 @@
+1.0.0b3
+  - add create-pbuild-config(cpc) command which allows to create a working
+    config for pbuild tool based on OBS server side data
+
 1.0.0b2
   - Support ssh-agent forwarding
   - ssh auth: Avoid password prompt when using TransientCredentialsManager
diff --git a/osc/commandline.py b/osc/commandline.py
index 0cef868f..79f58036 100644
--- a/osc/commandline.py
+++ b/osc/commandline.py
@@ -8345,6 +8345,35 @@ Please submit there instead, or use --nodevelproject to force direct submission.
             if len(user) == 3:
                 print("%s: \"%s\" <%s>" % (user[0], user[1], user[2]))
 
+    @cmdln.name("create-pbuild-config")
+    @cmdln.alias('cpc')
+    @cmdln.option("repository")
+    @cmdln.option("arch")
+    def do_create_pbuild_config(self, subcmd, opts):
+        """
+        This command is creating the necessary files to build using pbuild tool.
+        It basically creates _config and _pbuild file in the project directory.
+        Changes from there can not get submitted back, except the project is managed
+        in git.
+
+        Examples:
+            osc cpc REPOSITORY ARCH
+        """
+
+        apiurl = self.get_api_url()
+        project = None
+        project_dir = os.curdir
+        if is_project_dir(project_dir):
+            project = store_read_project(project_dir)
+        elif is_package_dir(project_dir):
+            project_dir += '/..'
+            project = store_read_project(project_dir)
+        else:
+            raise oscerr.WrongArgs('Creating pbuild only works in a checked out project or package')
+
+        create_pbuild_config(apiurl, project, opts.repository, opts.arch, project_dir)
+
+
     @cmdln.option('-r', '--revision', metavar='rev',
                   help='print out the specified revision')
     @cmdln.option('-e', '--expand', action='store_true',
diff --git a/osc/core.py b/osc/core.py
index 9c279339..fd7a1cee 100644
--- a/osc/core.py
+++ b/osc/core.py
@@ -6379,6 +6379,39 @@ def get_buildconfig(apiurl, prj, repository, path=None):
     return f.read()
 
 
+def create_pbuild_config(apiurl, project, repository, arch, project_dir):
+    """
+    This is always replacing a possible exiting config for now
+    we could extend the _pbuild file easily, but what should we do with multiple instances of the _config?
+    """
+    # get expanded buildconfig for given project and repository
+    bc = get_buildconfig(apiurl, project, repository)
+    if not bc:
+        msg = "Failed to get build config for project '{project}', repository '{repository}'"
+        raise oscerr.NotFoundAPIError(msg)
+
+    with open(os.path.join(project_dir, '_config'), "w") as f:
+        f.write(decode_it(bc))
+
+    # create the _pbuild file based on expanded repository path informations
+    pb = ET.fromstring('<pbuild></pbuild>')
+    tree = ET.ElementTree(pb)
+    preset = ET.SubElement(pb, 'preset', name=repository, default="")  # default should be empty, but ET crashes
+    bi_text = decode_it(get_buildinfo(apiurl, project, '_repository', repository, arch, specfile="Name: dummy"))
+    root = ET.fromstring(bi_text)
+
+# cross compile setups are not yet supported
+#    for path in root.findall('hostsystem'):
+#        ET.SubElement(preset, 'hostrepo').text = path.get('url')
+
+    for path in root.findall('path'):
+        ET.SubElement(preset, 'repo').text = path.get('url')
+
+    ET.SubElement(preset, 'arch').text = arch
+    xmlindent(tree)
+    tree.write(os.path.join(project_dir,'_pbuild'), encoding="utf-8", xml_declaration=True)
+
+
 def get_worker_info(apiurl, worker):
     u = makeurl(apiurl, ['worker', worker])
     f = http_GET(u)
diff --git a/osc/oscerr.py b/osc/oscerr.py
index 9df3de89..7441d99f 100644
--- a/osc/oscerr.py
+++ b/osc/oscerr.py
@@ -50,6 +50,15 @@ class APIError(OscBaseError):
         super().__init__()
         self.msg = msg
 
+    def __str__(self):
+        return f"{self.__class__.__name__}: {self.msg}"
+
+
+class NotFoundAPIError(APIError):
+    """
+    Requested data was not found.
+    """
+
 
 class NoConfigfile(OscBaseError):
     """Exception raised when osc's configfile cannot be found"""