Class: SolidLitequeen::DatabasesController

Inherits:
ApplicationController show all
Defined in:
app/controllers/solid_litequeen/databases_controller.rb

Instance Method Summary collapse

Instance Method Details

#download ⇒ Object 



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# File 'app/controllers/solid_litequeen/databases_controller.rb', line 174

def download
  database_id = params[:database_id]
  database_location = Base64.urlsafe_decode64(database_id)

  # Ensure the database file exists
  unless File.exist?(database_location)
    flash[:error] = "Database file not found"
    redirect_to databases_path and return
  end

  # Create a temporary file for the backup
  backup_file = Tempfile.new([ "backup", ".sqlite3" ])
  backup_file.close  # Close the file so SQLite3 can write to it

  begin
    # Establish connection like we've been doing elsewhere
    DynamicDatabase.establish_connection(
      adapter: "sqlite3",
      database: database_location
    )

    # Use VACUUM INTO for a more efficient backup
    DynamicDatabase.connection.execute("VACUUM INTO '#{backup_file.path}'")

    # Send the backup file as a download
    send_file backup_file.path,
              filename: File.basename(database_location),
              type: "application/x-sqlite3",
              disposition: "attachment"
  end
end

#get_command_palette_data ⇒ Object 



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# File 'app/controllers/solid_litequeen/databases_controller.rb', line 251

def get_command_palette_data
  palette_data = []
  id_counter = 1

  @available_databases ||= ActiveRecord::Base.configurations.configurations.select do |config|
    config.adapter == "sqlite3" && config.env_name == Rails.env && config.database.present?
  end

  @available_databases.each do |db|
    db_id = Base64.urlsafe_encode64(db.database)
    db_file_name = db.database

    # Add database entry
    palette_data << {
      id: id_counter,
      type: "database",
      name: db.name,
      database_file_name: db_file_name,
      rowCount: nil,
      path: database_path(db_id)
    }
    id_counter += 1

    # Establish a connection to fetch tables for this database
    DynamicDatabase.establish_connection(
      adapter: "sqlite3",
      database: db.database
    )

    DynamicDatabase.connection.tables.each do |table_name|
      row_count = DynamicDatabase.connection.select_value("SELECT COUNT(*) FROM #{table_name}").to_i

      # Add table entry
      palette_data << {
        id: id_counter,
        type: "table",
        name: table_name,
        database_name: db.name,
        database_file_name: db_file_name,
        rowCount: row_count,
        path: database_table_rows_path(db_id, table_name)
      }
      id_counter += 1
    end
  end

  render json: palette_data
end

#get_foreign_key_data ⇒ Object 



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# File 'app/controllers/solid_litequeen/databases_controller.rb', line 228

def get_foreign_key_data
  @database_id = params.expect(:database_id)
  @table_name = params.expect(:table)
  @target_table = params.expect(:target_table)
  @target_field = params.expect(:target_field)
  @target_field_value = params.expect(:target_field_value)

  @database_location = Base64.urlsafe_decode64(@database_id)

  DynamicDatabase.establish_connection(
    adapter: "sqlite3",
    database: @database_location
  )


  # Query the target table for the record matching the foreign key value
  query = "SELECT * FROM #{@target_table} WHERE #{@target_field} = ? LIMIT 1"
  @result = DynamicDatabase.connection.exec_query(query, "SQL", [ @target_field_value ])


  render partial: "foreign-key-data"
end

#index ⇒ Object 



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# File 'app/controllers/solid_litequeen/databases_controller.rb', line 7

def index
end

#set_column_order ⇒ Object 



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# File 'app/controllers/solid_litequeen/databases_controller.rb', line 207

def set_column_order
  table_name = params[:table]
  database_id = params[:database_id]

  column_order = params[:columnOrder] || []

  database_location = Base64.urlsafe_decode64(database_id)

  DynamicDatabase.establish_connection(
    adapter: "sqlite3",
    database: database_location
  )

  valid_columns = DynamicDatabase.connection.columns(table_name).map(&:name)
  sanitized_order = column_order & valid_columns

  session["#{database_id}_#{table_name}_column_order"] = sanitized_order

  head :ok
end

#show ⇒ Object 



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# File 'app/controllers/solid_litequeen/databases_controller.rb', line 10

def show
  @database_id = params.expect(:id)
  @database_location = Base64.urlsafe_decode64(@database_id)

  DynamicDatabase.establish_connection(
    adapter: "sqlite3",
    database: @database_location
  )

  tables = DynamicDatabase.connection.tables

  foreign_keys = []

  @tables = tables.map do |table|
    fk = DynamicDatabase.connection.foreign_keys(table)
    foreign_keys.concat(fk) unless fk.empty?

    row_count = DynamicDatabase.connection.select_value("SELECT COUNT(*) FROM #{table}").to_i
    { name: table, row_count: row_count }
  end

  tables = {}
  relations = []

  foreign_keys.each do |rel|
    from_table = rel[:from_table]
    to_table = rel[:to_table]
    fk_field =  rel.dig(:options).dig(:column)
    pk_field = rel.dig(:options).dig(:primary_key)

    # Initialize tables if not already present
    tables[from_table] ||= { name: from_table, fields: [] }
    tables[to_table]   ||= { name: to_table, fields: [] }

    # Add fields if not already included
    tables[from_table][:fields] << fk_field unless tables[from_table][:fields].include?(fk_field)
    tables[to_table][:fields] << pk_field unless tables[to_table][:fields].include?(pk_field)

    # Build a simplified relation object
    relations << {
      from_table: from_table,
      from_field: fk_field,
      to_table: to_table,
      to_field: pk_field
    }
  end

  @table_relations = {
    tables: tables.values,
    relations: relations
  }
end

#table_rows ⇒ Object 



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# File 'app/controllers/solid_litequeen/databases_controller.rb', line 63

def table_rows
  @database_id = params.expect(:database_id)
  @table_name = params.expect(:table)

  # Create a unique key for this table's sort preferences
  sort_key = "#{@database_id}_#{@table_name}_sort"

  # Update session if new sort params are provided
  if params[:sort_column].present?
    session[sort_key] = {
      sort_column: params[:sort_column].to_s,
      sort_direction: (params[:sort_direction]&.upcase == "DESC" ? "DESC" : "ASC")
    }.stringify_keys # Ensure all keys are strings in session
  end

  # Get sort preferences from session or set defaults with string keys
  sort_prefs = session[sort_key]&.with_indifferent_access || {
    "sort_column" => nil,
    "sort_direction" => nil
  }

  @sort_column = sort_prefs["sort_column"]
  @sort_direction = sort_prefs["sort_direction"]

  @database_location = Base64.urlsafe_decode64(@database_id)

  DynamicDatabase.establish_connection(
    adapter: "sqlite3",
    database: @database_location
  )

  table_columns = DynamicDatabase.connection.columns(@table_name)

  foreign_keys = DynamicDatabase.connection.foreign_keys(@table_name)

  primary_key_column_name = DynamicDatabase.connection.primary_key(@table_name)


  # Build a mapping from column name to its foreign key details
  fk_info = {}
  foreign_keys.each do |fk|
    # Depending on your Rails version, you might access these properties as below:
    fk_info[fk.column] = {
      to_table: fk.to_table,
      primary_key: fk.primary_key,
      on_update: fk.options.dig(:on_update),
      on_delete: fk.options.dig(:on_delete)
    }
  end

  # Retrieve index info
  indexes = DynamicDatabase.connection.indexes(@table_name)
  index_data = {}
  indexes.each do |index|
    index.columns.each do |column_name|
      index_data[column_name] ||= []
      index_data[column_name] << { name: index.name, unique: index.unique }
    end
  end

  enum_info = enum_mappings[@table_name] || {}

  @columns_info = table_columns.each_with_object({}) do |column, hash|
    info = {
      sql_type: column.sql_type_metadata.sql_type,
      type: column.sql_type_metadata.type,
      limit: column.sql_type_metadata.limit,
      precision: column.sql_type_metadata.precision,
      scale: column.sql_type_metadata.scale,
      null: column.null,
      default: column.default,
      is_primary_key: primary_key_column_name == column.name
    }

    # Append foreign key info if available for this column
    if fk_info[column.name]
      info[:foreign_key] = fk_info[column.name]
    end

    # Append enum options if present
    info[:enum_options] = enum_info[column.name] if enum_info[column.name]

    # Append index info if available for this column
    info[:indexes] = index_data[column.name] if index_data[column.name]

    hash[column.name] = info
  end

  # Verify the sort column exists in the table to prevent SQL injection
  valid_columns = table_columns.map(&:name)

  stored_order = session["#{@database_id}_#{@table_name}_column_order"] || []
  ordered_columns = stored_order & valid_columns
  ordered_columns += valid_columns - ordered_columns
  # Persist merged column order so future requests use the updated schema
  session["#{@database_id}_#{@table_name}_column_order"] = ordered_columns

  order_clause = if @sort_column.present? && valid_columns.include?(@sort_column)
    "#{DynamicDatabase.connection.quote_column_name(@sort_column)} #{@sort_direction}"
  end

  sql = [ "SELECT #{ordered_columns.join(', ')} FROM #{@table_name}" ]
  sql << "ORDER BY #{order_clause}" if order_clause
  sql << "LIMIT 50"


  @data = DynamicDatabase.connection.select_all(sql.join(" "))

  @row_count = row_count = DynamicDatabase.connection.select_value("SELECT COUNT(*) FROM #{@table_name}").to_i
end