From 89f4196e7c9136defbcd541cca6dfcf6b0dec079 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marcin=20Bra=C5=84ski?= <marcin@cloudposse.com>
Date: Thu, 27 Aug 2020 20:59:09 +0200
Subject: [PATCH] WIP

---
 modules/github-automated-workflow/Makefile    | 28 +++++++++++++
 .../github-automated-workflow/Makefile.gotmpl | 40 +++++++++++++++++++
 .../migration.sh.gotmpl                       |  6 +++
 .../pr-body.md.gotmpl                         | 10 +++++
 .../github-automated-workflow/workflow.yaml   | 30 ++++++++++++++
 5 files changed, 114 insertions(+)
 create mode 100644 modules/github-automated-workflow/Makefile
 create mode 100644 templates/github-automated-workflow/Makefile.gotmpl
 create mode 100644 templates/github-automated-workflow/migration.sh.gotmpl
 create mode 100644 templates/github-automated-workflow/pr-body.md.gotmpl
 create mode 100644 templates/github-automated-workflow/workflow.yaml

diff --git a/modules/github-automated-workflow/Makefile b/modules/github-automated-workflow/Makefile
new file mode 100644
index 00000000..1ebf475e
--- /dev/null
+++ b/modules/github-automated-workflow/Makefile
@@ -0,0 +1,28 @@
+WORKFLOW_TEMPLATE_DIR ?= $(BUILD_HARNESS_PATH)/templates/github-automated-workflow
+
+## Create new workflow
+github-automated-workflow/init:
+	@if [ -z $(name) ]; then echo -e "Required argument "name" not present\n"; exit 1; fi
+	@$(eval WORKFLOW_NAME := $(shell echo "`date +"%Y-%m-%d"`-$(name)"))
+	@if [ -d $(WORKFLOW_NAME) ]; then echo "Workflow named $(WORKFLOW_NAME) already exists"; exit 1; fi
+	@mkdir -p $(WORKFLOW_NAME)
+	@cp $(WORKFLOW_TEMPLATE_DIR)/workflow.yaml $(WORKFLOW_NAME)
+	@sed -i '' -e "s/__NAME__/$(name)/" $(WORKFLOW_NAME)/workflow.yaml
+	@echo "Workflow $(WORKFLOW_NAME) created."
+	@echo "Update $(WORKFLOW_NAME)/workflow.yaml configuration file and run workflow with 'make github-automated-workflow/configure name=$(WORKFLOW_NAME)'"
+
+# Create scripts based on yaml configuration
+github-automated-workflow/configure:
+	@if [ -z $(name) ]; then echo -e "Required argument "name" not present\n"; exit 1; fi
+	@$(eval WORKFLOW_NAME := $(shell echo "$(name)"))
+	@if [ ! -d $(WORKFLOW_NAME) ]; then echo "Workflow named $(WORKFLOW_NAME) does not exists"; exit 1; fi
+	@cd $(name) && gomplate --file $(WORKFLOW_TEMPLATE_DIR)/migration.sh.gotmpl --out migration.sh
+	@cd $(name) && gomplate --file $(WORKFLOW_TEMPLATE_DIR)/Makefile.gotmpl --out Makefile
+	@cd $(name) && gomplate --file $(WORKFLOW_TEMPLATE_DIR)/pr-body.md.gotmpl --out pr-body.md
+	@cd $(name) && chmod a+x migration.sh
+	@mkdir -p $(name)/log
+
+github-automated-workflow/run:
+	@if [ -z $(name) ]; then echo -e "Required argument "name" not present\n"; exit 1; fi
+	@$(eval WORKFLOW_NAME := $(shell echo "$(name)"))
+	@if [ ! -d $(WORKFLOW_NAME) ]; then echo "Workflow named $(WORKFLOW_NAME) does not exists"; exit 1; fi
diff --git a/templates/github-automated-workflow/Makefile.gotmpl b/templates/github-automated-workflow/Makefile.gotmpl
new file mode 100644
index 00000000..8d34ad98
--- /dev/null
+++ b/templates/github-automated-workflow/Makefile.gotmpl
@@ -0,0 +1,40 @@
+{{ defineDatasource "config" "workflow.yaml" | regexp.Replace ".*" "" -}}
+WORKFLOW_TEMPLATE_DIR ?= $(BUILD_HARNESS_PATH)/templates/github-automated-workflow/
+
+mp-init:
+	@mp init --repo-search "{{ (ds "config").github.repository_search }}" > log/mp_init.log
+	@mp clone >> log/mp_clone.log
+
+mp-plan:
+	@mp plan -b {{ (ds "config").github.branch }} -m '{{ (ds "config").github.commit_message }}' -- sh -c $$PWD/migration.sh > log/mp_plan.log
+
+{{ if eq (ds "config").github.pr.enabled true -}}
+mp-push:
+	echo Create PR
+	@mp push -b pr-body.md -a {{ (ds "config").github.pr.reviewer }} > log/mp_push.log
+
+	{{- if ne (len (ds "config").github.pr.labels) 0 }}
+	echo Label PR
+	@echo '{"labels":["{{ join (ds "config").github.pr.labels "\",\"" }}"]}' > labels.json
+	echo 'LABELS_JSON=`cat labels.json`; cd {}; PR_NUMBER=`gh pr create 2>&1 | tail -n1 | sed "s#.*pull/##"`; echo $$LABELS_JSON | gh api -X PATCH repos/:owner/:repo/issues/$$PR_NUMBER --input -'
+	@find . -name 'planned' -maxdepth 4 -type d -exec sh -c 'LABELS_JSON=`cat labels.json`; cd {}; PR_NUMBER=`gh pr create 2>&1 | tail -n1 | sed "s#.*pull/##"`; echo $$LABELS_JSON | gh api -X PATCH repos/:owner/:repo/issues/$$PR_NUMBER --input -' \; >> log/mp_push.log
+	@rm labels.json
+	{{- end }}
+
+	echo Add PR reviewers TODO
+	# https://developer.github.com/v3/pulls/review_requests/#request-reviewers-for-a-pull-request
+
+	{{ if eq (ds "config").tests true }}
+	echo Run tests
+	@find . -name 'planned' -maxdepth 4 -type d -exec sh -c 'cd {}; gh pr review --comment -b "/test all"' \;
+	{{ end -}}
+
+{{ end }}
+status:
+	@mp status
+
+{{ if eq (ds "config").tests true -}}
+# Run tests with `gh` command in planned repositories
+tests:
+	@find . -name 'planned' -maxdepth 4 -type d -exec sh -c 'cd {}; gh pr review --comment -b "/test all"' \;
+{{ end -}}
diff --git a/templates/github-automated-workflow/migration.sh.gotmpl b/templates/github-automated-workflow/migration.sh.gotmpl
new file mode 100644
index 00000000..e5df1683
--- /dev/null
+++ b/templates/github-automated-workflow/migration.sh.gotmpl
@@ -0,0 +1,6 @@
+#!/bin/bash -e
+# This script was automatically generated from workflow.yaml
+{{ defineDatasource "config" "workflow.yaml" | regexp.Replace ".*" "" -}}
+{{- range $migration := (ds "config").migrations }}
+{{ $migration }} >> migration.log
+{{- end }}
diff --git a/templates/github-automated-workflow/pr-body.md.gotmpl b/templates/github-automated-workflow/pr-body.md.gotmpl
new file mode 100644
index 00000000..493171a1
--- /dev/null
+++ b/templates/github-automated-workflow/pr-body.md.gotmpl
@@ -0,0 +1,10 @@
+{{ defineDatasource "config" "workflow.yaml" | regexp.Replace ".*" "" -}}
+## what
+{{- range $element := (ds "config").github.pr.body.what }}
+- {{ $element }}
+{{- end }}
+
+## why
+{{- range $element := (ds "config").github.pr.body.why }}
+- {{ $element }}
+{{- end }}
diff --git a/templates/github-automated-workflow/workflow.yaml b/templates/github-automated-workflow/workflow.yaml
new file mode 100644
index 00000000..5148fe43
--- /dev/null
+++ b/templates/github-automated-workflow/workflow.yaml
@@ -0,0 +1,30 @@
+name: __NAME__
+
+github:
+  # https://docs.github.com/en/github/searching-for-information-on-github/searching-for-repositories
+  #    all modules
+  #    repo_search: "org:cloudposse"
+  #    terraform modules
+  repository_search: "repo:cloudposse/terraform-aws-sns-topic"
+
+  branch: auto-__NAME__
+  commit_message: auto-__NAME__
+  pr:
+    enabled: true
+    body:
+      what:
+        - what
+      why:
+        - why
+    reviewer: 3h4x
+    # cloudposse/engineering
+
+    labels:
+      - auto-merge
+      # - auto-release
+
+tests: true
+
+migrations:
+  - make
+  - make readme