Class: Ditz::FileStorage

Inherits:
Object show all
Defined in:
lib/ditz/file-storage.rb

Overview

stores ditz database on disk

Constant Summary collapse

PROJECT_FN = 
"project.yaml"
ISSUE_FN_GLOB = 
"issue-*.yaml"

Instance Method Summary collapse

Constructor Details

#initialize(base_dir) ⇒ FileStorage

Returns a new instance of FileStorage.



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# File 'lib/ditz/file-storage.rb', line 10

def initialize base_dir
  @base_dir = base_dir
  @project_fn = File.join @base_dir, PROJECT_FN
end

Instance Method Details

#filename_for_issue(i) ⇒ Object 



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# File 'lib/ditz/file-storage.rb', line 49

def filename_for_issue i; File.join @base_dir, ISSUE_TO_FN(i) end

#filename_for_project ⇒ Object 



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# File 'lib/ditz/file-storage.rb', line 50

def filename_for_project; @project_fn end

#ISSUE_TO_FN(i) ⇒ Object 



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# File 'lib/ditz/file-storage.rb', line 8

def ISSUE_TO_FN i; "issue-#{i.id}.yaml" end

#load ⇒ Object 



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# File 'lib/ditz/file-storage.rb', line 15

def load
  Ditz::debug "loading project from #{@project_fn}"
  project = Project.from @project_fn

  fn = File.join @base_dir, ISSUE_FN_GLOB
  Ditz::debug "loading issues from #{fn}"
  project.issues = Dir[fn].map { |fn| Issue.from fn }
  Ditz::debug "found #{project.issues.size} issues"

  project.issues.each { |i| i.project = project }
  project
end

#save(project) ⇒ Object 



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# File 'lib/ditz/file-storage.rb', line 28

def save project
  dirty = project.each_modelobject { |o| break true if o.changed? }
  if dirty
    Ditz::debug "project is dirty, saving #{@project_fn}"
    project.save! @project_fn
  end

  changed_issues = project.issues.select { |i| i.changed? }
  changed_issues.each do |i|
    fn = filename_for_issue i
    Ditz::debug "issue #{i.name} is dirty, saving #{fn}"
    i.save! fn
  end

  project.deleted_issues.each do |i|
    fn = filename_for_issue i
    Ditz::debug "issue #{i.name} has been deleted, deleting #{fn}"
    FileUtils.rm fn
  end
end