Class: Kaede::Database

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/kaede/database.rb

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Database

Returns a new instance of Database.



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# File 'lib/kaede/database.rb', line 11

def initialize(path)
  @db = Sequel.connect(path)
end

Instance Method Details

#add_channel(channel) ⇒ Object 



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# File 'lib/kaede/database.rb', line 100

def add_channel(channel)
  @db.from(:channels).insert(name: channel.name, for_recorder: channel.for_recorder, for_syoboi: channel.for_syoboi)
end

#add_tracking_title(tid) ⇒ Object 



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# File 'lib/kaede/database.rb', line 125

def add_tracking_title(tid)
  @db.from(:tracking_titles).insert(tid: tid, created_at: Time.now)
end

#delete_job(pid) ⇒ Object 



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# File 'lib/kaede/database.rb', line 60

def delete_job(pid)
  @db.from(:jobs).where(pid: pid).delete
end

#get_channels ⇒ Object 



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# File 'lib/kaede/database.rb', line 94

def get_channels
  @db.from(:channels).map do |row|
    Channel.new(row[:id], row[:name], row[:for_recorder], row[:for_syoboi])
  end
end

#get_jobs ⇒ Object 



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# File 'lib/kaede/database.rb', line 46

def get_jobs
  @db.from(:jobs).select(:pid, :enqueued_at).where(finished_at: nil).where(Sequel.qualify(:jobs, :enqueued_at) >= Time.now).order(:enqueued_at).to_a
end

#get_program(pid) ⇒ Object 



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# File 'lib/kaede/database.rb', line 64

def get_program(pid)
  get_programs([pid])[pid]
end

#get_programs(pids) ⇒ Object 



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# File 'lib/kaede/database.rb', line 68

def get_programs(pids)
  programs = {}
  @db.from(:programs).inner_join(:channels, [[channel_id: :id]]).where(pid: pids).each do |row|
    program = Program.new(
      row[:pid],
      row[:tid],
      row[:start_time],
      row[:end_time],
      row[:name],
      row[:for_syoboi],
      row[:for_recorder],
      row[:count],
      row[:start_offset],
      row[:subtitle],
      row[:title],
      row[:comment],
    )
    programs[program.pid] = program
  end
  programs
end

#get_tracking_titles ⇒ Object 



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# File 'lib/kaede/database.rb', line 129

def get_tracking_titles
  @db.from(:tracking_titles).select(:tid).map do |row|
    row[:tid]
  end
end

#mark_finished(pid) ⇒ Object 



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# File 'lib/kaede/database.rb', line 90

def mark_finished(pid)
  @db.from(:jobs).where(pid: pid).update(finished_at: Time.now)
end

#prepare_tables ⇒ Object 



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# File 'lib/kaede/database.rb', line 15

def prepare_tables
  @db.create_table?(:channels) do
    primary_key :id
    String :name, size: 255, null: false, unique: true
    Integer :for_recorder, null: false, unique: true
    Integer :for_syoboi, null: false, unique: true
  end
  @db.create_table?(:programs) do
    primary_key :pid
    Integer :tid, null: false
    DateTime :start_time, null: false
    DateTime :end_time, null: false
    foreign_key :channel_id, :channels
    String :count, size: 16, null: false
    Integer :start_offset, null: false
    String :subtitle, size: 255
    String :title, size: 255
    String :comment, size: 255
  end
  @db.create_table?(:jobs) do
    foreign_key :pid, :programs, primary_key: true
    DateTime :enqueued_at, null: false
    DateTime :finished_at
    DateTime :created_at, null: false
  end
  @db.create_table?(:tracking_titles) do
    Integer :tid, primary_key: true
    DateTime :created_at, null: false
  end
end

#update_job(pid, enqueued_at) ⇒ Object 



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# File 'lib/kaede/database.rb', line 50

def update_job(pid, enqueued_at)
  @db.transaction do
    if @db.from(:jobs).where(pid: pid).select(1).first
      @db.from(:jobs).where(pid: pid).update(enqueued_at: enqueued_at)
    else
      @db.from(:jobs).insert(pid: pid, enqueued_at: enqueued_at, created_at: Time.now)
    end
  end
end

#update_program(program, channel) ⇒ Object 



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# File 'lib/kaede/database.rb', line 104

def update_program(program, channel)
  attributes = {
    tid: program.tid,
    start_time: program.start_time,
    end_time: program.end_time,
    channel_id: channel.id,
    count: program.count,
    start_offset: program.start_offset,
    subtitle: program.subtitle,
    title: program.title,
    comment: program.comment,
  }
  @db.transaction do
    if @db.from(:programs).where(pid: program.pid).select(1).first
      @db.from(:programs).where(pid: program.pid).update(attributes)
    else
      @db.from(:programs).insert(attributes.merge(pid: program.pid))
    end
  end
end