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108 lines
4.4 KiB
Haskell
108 lines
4.4 KiB
Haskell
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
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module ShellCommands
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( ShellCommand,
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ShellCommandContext (..),
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ShellCommandBuilder (..),
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runShellCommandBuilder,
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combineShellCommands,
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cdIntoCurrentProject,
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appendToWaspFile,
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createFile,
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setDbToPSQL,
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waspCliNew,
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waspCliCompile,
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waspCliMigrate,
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waspCliBuild,
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)
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where
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import Control.Monad.Reader (MonadReader (ask), Reader, runReader)
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import Data.List (intercalate)
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import System.FilePath (joinPath, (</>))
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-- NOTE: Should we consider separating shell parts, Wasp CLI parts, and test helper parts in the future?
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-- This would likely reqiure adoption of some library, and creating new layers of abstraction.
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-- Deemed not worth it right now by all.
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-- NOTE: Using `wasp-cli` herein so we can assume using latest `stack install` in CI and locally.
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-- TODO: In future, find a good way to test `wasp-cli start`.
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type ShellCommand = String
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-- Each shell command gets access to the current project name, and maybe other things in future.
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data ShellCommandContext = ShellCommandContext
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{ _ctxtCurrentProjectName :: String
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}
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deriving (Show)
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-- Used to construct shell commands, while still giving access to the context (if needed).
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newtype ShellCommandBuilder a = ShellCommandBuilder {_runShellCommandBuilder :: Reader ShellCommandContext a}
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deriving (Functor, Applicative, Monad, MonadReader ShellCommandContext)
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runShellCommandBuilder :: ShellCommandBuilder a -> ShellCommandContext -> a
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runShellCommandBuilder shellCommandBuilder context =
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runReader (_runShellCommandBuilder shellCommandBuilder) context
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combineShellCommands :: [ShellCommand] -> ShellCommand
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combineShellCommands = intercalate " && "
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cdIntoCurrentProject :: ShellCommandBuilder ShellCommand
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cdIntoCurrentProject = do
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context <- ask
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return $ "cd " ++ _ctxtCurrentProjectName context
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appendToWaspFile :: String -> ShellCommandBuilder ShellCommand
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appendToWaspFile content =
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-- NOTE: Using `show` to preserve newlines in string.
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return $ "printf " ++ show (content ++ "\n") ++ " >> main.wasp"
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-- NOTE: Pretty fragile. Can't handle spaces in args, *nix only, etc.
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createFile :: String -> FilePath -> String -> ShellCommandBuilder ShellCommand
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createFile content relDirFp filename = return $ combineShellCommands [createParentDir, writeContentsToFile]
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where
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createParentDir = "mkdir -p ./" ++ relDirFp
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destinationFile = "./" ++ relDirFp ++ "/" ++ filename
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contents = show (content ++ "\n")
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writeContentsToFile = unwords ["printf", contents, ">", destinationFile]
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-- NOTE: This is fragile and will likely break in future. Assumes `app` decl is first line and by default
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-- we do not have a `db` field. Consider better alternatives.
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setDbToPSQL :: ShellCommandBuilder ShellCommand
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setDbToPSQL =
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return $
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combineShellCommands
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[ -- Change DB to postgres by adding string at specific line so it still parses.
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"awk 'NR==2{print \" db: { system: PostgreSQL },\"}1' main.wasp > main.wasp.tmp",
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"mv main.wasp.tmp main.wasp"
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]
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waspCliNew :: ShellCommandBuilder ShellCommand
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waspCliNew = do
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context <- ask
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return $ "wasp-cli new " ++ _ctxtCurrentProjectName context
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waspCliCompile :: ShellCommandBuilder ShellCommand
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waspCliCompile = return "wasp-cli compile"
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-- TODO: We need to be careful what migration names we accept here, as Prisma will
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-- normalize a migration name containing spaces/dashes to underscores (and maybe other rules).
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-- This will impact our ability to move directories around if the names do not match exactly.
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-- Put in some check eventually.
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waspCliMigrate :: String -> ShellCommandBuilder ShellCommand
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waspCliMigrate migrationName =
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let generatedMigrationsDir = joinPath [".wasp", "out", "db", "migrations"]
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waspMigrationsDir = "migrations"
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in return $
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combineShellCommands
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[ -- Migrate using a migration name to avoid Prisma asking via CLI.
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"wasp-cli db migrate-dev " ++ migrationName,
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-- Rename both migrations to remove the date-specific portion of the directory to something static.
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"mv " ++ (waspMigrationsDir </> ("*" ++ migrationName)) ++ " " ++ (waspMigrationsDir </> ("no-date-" ++ migrationName)),
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"mv " ++ (generatedMigrationsDir </> ("*" ++ migrationName)) ++ " " ++ (generatedMigrationsDir </> ("no-date-" ++ migrationName))
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]
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waspCliBuild :: ShellCommandBuilder ShellCommand
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waspCliBuild = return "wasp-cli build"
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