feat: rake task to load DB from local file (#555)

* add a rake task to load DB w/ local sql dump
* remove rake task to download from remote. It depends on a static s3://<wagner bucket>/dgidb/dgidb_latest.sql URI and I'm not really happy with maintaining that. I'd rather have a better way of dynamically pointing to the latest-dated dump. Also, I thought some of the data was supposed to be private but I could be wrong.
* slightly reconfigure the section for psql executable injection into the PATH. Drop macports support. Add homebrew (ARM64) support.

server/lib/tasks/db_bootstrapping.rake

@@ -10,7 +10,6 @@ namespace :dgidb do
     data_submodule_path = File.join(Rails.root, 'data')
   end
   data_file = File.join(data_submodule_path, 'dgidb_v5_latest.sql')
-  version_file = File.join(Rails.root, 'VERSION')
   database_name = Rails.configuration.database_configuration[Rails.env]['database']
   host = Rails.configuration.database_configuration[Rails.env]['host']
   username = Rails.configuration.database_configuration[Rails.env]['username']
@@ -22,22 +21,18 @@ namespace :dgidb do
 
   desc 'set up path for macs running Postgres.app'
   task :setup_path do
-    #special case for macs running Postgres.app
-    if RbConfig::CONFIG['host_os'] =~ /darwin/ && File.exist?( '/Applications/Postgres.app' )
-      puts 'Found Postgres.app'
-      ENV['PATH'] = "/Applications/Postgres.app/Contents/Versions/latest/bin:#{ENV['PATH']}"
+    if RbConfig::CONFIG['host_os'] =~ /darwin/
+      if File.exist?( '/Applications/Postgres.app' )
+        puts 'Using Postgres.app'
+        ENV['PATH'] = "/Applications/Postgres.app/Contents/Versions/latest/bin:#{ENV['PATH']}"
+        next
+      elsif File.exist?('/opt/homebrew/bin/psql')
+        puts 'Using Hombrew-installed psql'
+        ENV['PATH'] = "/opt/homebrew/bin/:#{ENV['PATH']}"
+        next
+      end
     end
-
-    # MacPorts Handling
-    macports_postgres = Dir.glob( '/opt/local/lib/postgresql*/bin')
-    if RbConfig::CONFIG['host_os'] =~ /darwin/ && macports_postgres.any?
-      macports_postgres_path = macports_postgres.last
-      macports_postgres_version = File.basename(File.dirname(macports_postgres_path))
-      puts "Found MacPorts #{macports_postgres_version}"
-      ENV['PATH'] = "#{macports_postgres_path}:#{ENV['PATH']}"
-    end
-
-    # Homebrew Handling (TODO)
+    puts 'Warning: unable to ensure psql is available on $PATH'
   end
 
   desc 'create a dump of the current local database'
@@ -49,25 +44,11 @@ namespace :dgidb do
     end
   end
 
-  desc 'load the source controlled db dump and schema into the local db, blowing away what is currently there'
-  task load_local: ['setup_path', 'db:drop', 'db:create', 'db:structure:load'] do
-    download_data_dump(data_file)
-    system "psql -h #{host} -d #{database_name} -f #{data_file}"
-    Rails.cache.clear
-  end
+  desc 'load a local db dump and schema into the local db, blowing away what is currently there'
+  task :load_from_local, [:db_dump] => ['setup_path', 'db:drop', 'db:create', 'db:structure:load'] do |_t, args|
+    raise 'You must supply a path to a DB dump' unless args[:db_dump]
 
-  desc 'create a new data snapshot'
-  task :create_snapshot, [:message, :version_type] do |t, args|
-    args.with_defaults(version_type: :patch)
-    raise 'You must supply a commit message!' unless args[:message]
-    Rake::Task['dgidb:dump_local'].execute
-    in_git_stash do
-      pull_latest
-      new_version = update_version(version_file, args[:version_type].to_sym)
-      commit_db_update(data_submodule_path, data_file, args[:message])
-      commit_data_submodule_update(args[:message], data_submodule_path, version_file)
-      create_tag(new_version)
-      push_changes
-    end
+    system "psql -h #{host} -d #{database_name} -f #{args[:db_dump]}"
+    Rails.cache.clear
   end
 end

server/lib/utils/snapshot_helpers.rb

@@ -48,13 +48,6 @@ def update_data_submodule
     system_or_die("git submodule update --init data")
   end
 
-  def download_data_dump(destination)
-    unless Dir.exist? 'data'
-      Dir.mkdir('data')
-    end
-    system_or_die("wget -O #{destination} https://nch-igm-wagner-lab-public.s3.us-east-2.amazonaws.com/dgidb_v5_latest.sql")
-  end
-
   private
 
   def system_or_die(syscall)