#############################################################################################
#############################################################################################
##
## CHANGELOG
##
#############################################################################################
#############################################################################################


GIT_CHGLOG_BIN := $(shell command -v git-chglog 2> /dev/null)
GIT_CHGLOG_CONFIG_DIR := $(PROJECT_ROOT).chglog
REPOSURL			  := $(subst .git,,$(subst $(shell git config --get user.name)@,,$(shell git config --get remote.origin.url)))

ifeq ($(GO),)
  $(error $(ERRORMARKER) GO is not defined)
endif

ifeq ($(GIT_CHGLOG_BIN),)
  $(shell $(GO) install github.com/git-chglog/git-chglog/cmd/git-chglog@latest)
  GIT_CHGLOG_BIN := $(shell command -v git-chglog 2> /dev/null)
endif     


ifneq ($(shell test -d $(GIT_CHGLOG_CONFIG_DIR) && echo -n yes),yes)
    $(shell mkdir -p $(GIT_CHGLOG_CONFIG_DIR))
endif

remove-config-files:
	$(shell rm -Rf $(GIT_CHGLOG_CONFIG_DIR)/ && mkdir -p $(GIT_CHGLOG_CONFIG_DIR))

.PHONY: update-chglog-files
## update standard git-chglog configuration files
update-chglog-files: remove-config-files $(GIT_CHGLOG_CONFIG_DIR)/config.yml $(GIT_CHGLOG_CONFIG_DIR)/CHANGELOG.tpl.md
	$(ECHOMARKER) "update standard git-chglog configuration files"

define GIT_CHGLOG_CONFIG_FILE
style: gitlab
template: CHANGELOG.tpl.md
info:
  title: CHANGELOG
  repository_url: $(REPOSURL)
options:
  commits:
    filters:
      Type:
        - feat
        - fix
        - doc
        - refactor
        - perf
        - test
        - chore
        ## deprecated types and typos  
        - docs
        - documentation
        - feat
        - added
        - add
        - bugfix
        - revert
        - update
        - updates
        - change
        - changed
  commit_groups:
    title_maps:
      feat: Add Features
      fix: Bug Fixes
      doc: Documentation
      refactor: Code Refactoring
      perf: Performance Improvements
      test: Tests
      ## Chore is used for all other changes that don't fit in the other categories
      chore: Changes
      ## deprecated types and typos  
      docs: Documentation
      documentation: Documentation
      added: Add Features
      add: Add Features
      bugfix: Bug Fixes
      revert: Reverts
      update: Changes
      updates: Changes
      change: Changes
      changed: Changes
  header:
    pattern: "^(\\w*)(?:\\(([\\w\\$$\\.\\-\\*\\s]*)\\))?\\:\\s(.*)$$"
    pattern_maps:
      - Type
      - Scope
      - Subject
  notes:
    keywords:
      - BREAKING CHANGE
endef

export GIT_CHGLOG_CONFIG_FILE

$(GIT_CHGLOG_CONFIG_DIR)/config.yml:
	$(QUIET) $(ECHO) "$$GIT_CHGLOG_CONFIG_FILE" >> $@

define GIT_CHGLOG_CONFIG_TEMPLATE
{{ range .Versions }}
<a name="{{ .Tag.Name }}"></a>
## {{ if .Tag.Previous }}[{{ .Tag.Name }}]{{ else }}{{ .Tag.Name }}{{ end }} - {{ datetime "2006-01-02" .Tag.Date }}
{{ range .CommitGroups -}}
### {{ .Title }}
{{ range .Commits -}}
- {{ if .Scope }}**{{ .Scope }}:** {{ end }}{{ .Subject }}
{{ end }}
{{ end -}}

{{- if .NoteGroups -}}
{{ range .NoteGroups -}}
### {{ .Title }}
{{ range .Notes }}
{{ .Body }}
{{ end }}
{{ end -}}
{{ end -}}
{{ end -}}

{{- if .Versions }}
{{ range .Versions -}}
{{ if .Tag.Previous -}}
[{{ .Tag.Name }}]: {{ $$.Info.RepositoryURL }}/compare/{{ .Tag.Previous.Name }}...{{ .Tag.Name }}
{{ end -}}
{{ end -}}
{{ end -}}
endef

export GIT_CHGLOG_CONFIG_TEMPLATE


$(GIT_CHGLOG_CONFIG_DIR)/CHANGELOG.tpl.md:
	$(QUIET) $(ECHO) "$$GIT_CHGLOG_CONFIG_TEMPLATE" >> $@

## location of CHANGELOG.md file
CHANGELOG_FILE ?= $(PROJECT_ROOT)CHANGELOG.md
EXECUTABLES = $(EXECUTABLES:-) $(GIT_CHGLOG_BIN)