From efc9d0173e33d28b6faa822efaae882b580e324c Mon Sep 17 00:00:00 2001
From: Michael Barz <mbarz@owncloud.com>
Date: Tue, 10 Mar 2020 14:34:39 +0100
Subject: [PATCH] Add publishing to GH step without building binaries

---
 .drone.star                                | 66 +++++++++++++++++++++-
 Makefile                                   |  3 +
 changelog/CHANGELOG.tmpl                   | 39 ++++++++++---
 changelog/unreleased/tracing-middleware.md |  2 +-
 4 files changed, 100 insertions(+), 10 deletions(-)

diff --git a/.drone.star b/.drone.star
index bdf2cd0164..fa8ea2d84c 100644
--- a/.drone.star
+++ b/.drone.star
@@ -5,6 +5,7 @@ def main(ctx):
 
   after = [
     changelog(ctx),
+    publish(ctx),
   ]
 
   return stages + after
@@ -130,6 +131,7 @@ def testing(ctx):
   }
 
 def changelog(ctx):
+  repo_slug = ctx.build.source_repo if ctx.build.source_repo else ctx.repo.slug
   return {
     'kind': 'pipeline',
     'type': 'docker',
@@ -150,8 +152,8 @@ def changelog(ctx):
           'actions': [
             'clone',
           ],
-          'remote': 'https://github.com/%s' % (ctx.repo.slug),
-          'branch': ctx.build.branch if ctx.build.event == 'pull_request' else 'master',
+          'remote': 'https://github.com/%s' % (repo_slug),
+          'branch': ctx.build.source if ctx.build.event == 'pull_request' else 'master',
           'path': '/drone/src',
           'netrc_machine': 'github.com',
           'netrc_username': {
@@ -170,6 +172,14 @@ def changelog(ctx):
           'make changelog',
         ],
       },
+      {
+        'name': 'diff',
+        'image': 'owncloud/alpine:latest',
+        'pull': 'always',
+        'commands': [
+          'git diff',
+        ],
+      },
       {
         'name': 'output',
         'image': 'webhippie/golang:1.13',
@@ -214,6 +224,58 @@ def changelog(ctx):
     'trigger': {
       'ref': [
         'refs/heads/master',
+        'refs/pull/**',
+      ],
+    },
+  }
+
+def publish(ctx):
+  return {
+    'kind': 'pipeline',
+    'type': 'docker',
+    'name': 'publish',
+    'platform': {
+      'os': 'linux',
+      'arch': 'amd64',
+    },
+    'steps': [
+      {
+        'name': 'prepare',
+        'image': 'owncloud/alpine:latest',
+        'pull': 'always',
+        'commands': [
+          'mkdir -p dist',
+        ],
+      },
+      {
+        'name': 'changelog',
+        'image': 'toolhippie/calens:latest',
+        'pull': 'always',
+        'commands': [
+          'calens --version %s -o dist/CHANGELOG.md' % ctx.build.ref.replace("refs/tags/v", "").split("-")[0],
+        ],
+      },
+      {
+        'name': 'release',
+        'image': 'plugins/github-release:1',
+        'pull': 'always',
+        'settings': {
+          'api_key': {
+            'from_secret': 'github_token',
+          },
+          'files': [],
+          'title': ctx.build.ref.replace("refs/tags/v", ""),
+          'note': 'dist/CHANGELOG.md',
+          'overwrite': True,
+          'prerelease': len(ctx.build.ref.split("-")) > 1,
+        },
+      },
+    ],
+    'depends_on': [
+      'testing',
+    ],
+    'trigger': {
+      'ref': [
         'refs/tags/**',
       ],
     },
diff --git a/Makefile b/Makefile
index 2932f0c331..7d3e08ef72 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,8 @@
 SHELL := bash
 NAME := ocis-pkg
 IMPORT := github.com/owncloud/$(NAME)
+BIN := bin
+DIST := dist
 
 ifeq ($(OS), Windows_NT)
 	UNAME := Windows
@@ -33,6 +35,7 @@ sync:
 .PHONY: clean
 clean:
 	go clean -i ./...
+	rm -rf $(BIN) $(DIST)
 
 .PHONY: fmt
 fmt:
diff --git a/changelog/CHANGELOG.tmpl b/changelog/CHANGELOG.tmpl
index 3fee894812..06388c3cb1 100644
--- a/changelog/CHANGELOG.tmpl
+++ b/changelog/CHANGELOG.tmpl
@@ -1,18 +1,43 @@
-{{- range $changes := . }}{{ with $changes -}}
-# Changelog for {{ .Version }}
+{{ $allVersions := . }}
+{{- range $index, $changes := . }}{{ with $changes -}}
+{{ if gt (len $allVersions) 1 -}}
+# Changelog for [{{ .Version }}] ({{ .Date }})
 
-The following sections list the changes for {{ .Version }}.
+The following sections list the changes in ocis-pkg {{ .Version }}.
+
+{{/* creating version compare links */ -}}
+{{ $next := add1 $index -}}
+{{ if ne (len $allVersions) $next -}}
+{{ $previousVersion := (index $allVersions $next).Version -}}
+{{ if eq .Version "unreleased" -}}
+[{{ .Version }}]: https://github.com/owncloud/ocis-pkg/compare/v{{ $previousVersion }}...master
+
+{{ else -}}
+[{{ .Version }}]: https://github.com/owncloud/ocis-pkg/compare/v{{ $previousVersion }}...v{{ .Version }}
+
+{{ end -}}
+{{ end -}}
+
+{{- /* last version managed by calens, end of the loop */ -}}
+{{ if eq .Version "1.0.0" -}}
+[{{ .Version }}]: https://github.com/owncloud/ocis-pkg/compare/63fa90a673cbc3238a503ea5e6304f1db7fdf47b...v{{ .Version }}
+
+{{ end -}}
+{{ else -}}
+# Changes in {{ .Version }}
+
+{{ end -}}
 
 ## Summary
 {{ range $entry := .Entries }}{{ with $entry }}
- * {{ .TypeShort }} #{{ .PrimaryID }}: {{ .Title }}
+* {{ .Type }} - {{ .Title }}: [#{{ .PrimaryID }}]({{ .PrimaryURL }})
 {{- end }}{{ end }}
 
 ## Details
 {{ range $entry := .Entries }}{{ with $entry }}
- * {{ .Type }} #{{ .PrimaryID }}: {{ .Title }}
+* {{ .Type }} - {{ .Title }}: [#{{ .PrimaryID }}]({{ .PrimaryURL }})
 {{ range $par := .Paragraphs }}
-   {{ wrap $par 80 3 }}
+   {{ wrapIndent $par 80 3 }}
 {{ end -}}
 {{ range $url := .IssueURLs }}
    {{ $url -}}
@@ -23,6 +48,6 @@ The following sections list the changes for {{ .Version }}.
 {{ range $url := .OtherURLs }}
    {{ $url -}}
 {{ end }}
-{{ end }}{{ end }}
 
 {{ end }}{{ end -}}
+{{ end }}{{ end -}}
diff --git a/changelog/unreleased/tracing-middleware.md b/changelog/unreleased/tracing-middleware.md
index 5361167592..a7c0a86d0d 100644
--- a/changelog/unreleased/tracing-middleware.md
+++ b/changelog/unreleased/tracing-middleware.md
@@ -1,4 +1,4 @@
-Feature: Tracing middleware
+Enhancement: Tracing middleware
 
 A new tracing middleware has been added to unpack context propagation