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# frozen_string_literal: true
module JekyllImport
module Importers
class Ghost < Importer
def self.specify_options(c)
c.option "dbfile", "--dbfile", "Database file (default: ghost.db)"
end
def self.require_deps
JekyllImport.require_with_fallback(%w(
rubygems
sequel
sqlite3
fileutils
safe_yaml
))
end
def self.process(options)
posts = fetch_posts(options.fetch("dbfile", "ghost.db"))
unless posts.empty?
FileUtils.mkdir_p("_posts")
FileUtils.mkdir_p("_drafts")
posts.each do |post|
write_post_to_file(post)
end
end
end
class << self
private
def fetch_posts(dbfile)
db = Sequel.sqlite(dbfile)
query = "SELECT `title`, `slug`, `markdown`, `created_at`, `published_at`, `status`, `page` FROM posts"
db[query]
end
def write_post_to_file(post)
# detect if the post is a draft
draft = post[:status].eql?("draft")
# detect if the post is considered a static page
page = post[:page]
# the publish date if the post has been published, creation date otherwise
# The database stores timestamps in milliseconds, so we need to divide by 1000
# to get time in seconds.
date = Time.at(post[draft ? :created_at : :published_at].to_i / 1000)
if page
# the filename under which the page is stored
filename = "#{post[:slug]}.markdown"
else
# the directory where the file will be saved to. either _drafts or _posts
directory = draft ? "_drafts" : "_posts"
# the filename under which the post is stored
filename = File.join(directory, "#{date.strftime("%Y-%m-%d")}-#{post[:slug]}.markdown")
end
# the YAML FrontMatter
frontmatter = {
"layout" => page ? "page" : "post",
"title" => post[:title],
}
frontmatter["date"] = date if !page && !draft # only add the date to the frontmatter when the post is published
frontmatter["published"] = false if page && draft # set published to false for draft pages
frontmatter.delete_if { |_k, v| v.nil? || v == "" } # removes empty fields
# write the posts to disk
write_file(filename, frontmatter.to_yaml, post[:markdown])
end
def write_file(filename, frontmatter, content)
File.open(filename, "w") do |f|
f.puts frontmatter
f.puts "---"
f.puts content
end
end
end
end
end
end
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