package react

import (
	"strings"

	"dagger.io/dagger"
	"dagger.io/dagger/op"
	"dagger.io/alpine"
)

// A ReactJS application
#App: {
	// Application source code
	source: dagger.#Artifact

	// Environment variables
	env: [string]: string

	// Write the contents of `environment` to this file,
	// in the "envfile" format.
	writeEnvFile: string | *""

	// Yarn-specific settings
	yarn: {
		// Read build output from this directory
		// (path must be relative to working directory).
		buildDir: string | *"build"

		// Run this yarn script
		script: string | *"build"
	}

	build: #up: [
		op.#Load & {
			from: alpine.#Image & {
				package: bash: "=~5.1"
				package: yarn: "=~1.22"
			}
		},
		op.#Exec & {
			args: [
				"/bin/bash",
				"--noprofile",
				"--norc",
				"-eo",
				"pipefail",
				"-c",
				"""
					[ -n "$ENVFILE_NAME" ] && echo "$ENVFILE" > "$ENVFILE_NAME"
					yarn install --production false
					yarn run "$YARN_BUILD_SCRIPT"
					mv "$YARN_BUILD_DIRECTORY" /build
					""",
			]
			if env != _|_ {
				"env": env
			}
			"env": {
				YARN_BUILD_SCRIPT:    yarn.script
				YARN_CACHE_FOLDER:    "/cache/yarn"
				YARN_BUILD_DIRECTORY: yarn.buildDir
				if writeEnvFile != "" {
					ENVFILE_NAME: writeEnvFile
					ENVFILE:      strings.Join([ for k, v in env {"\(k)=\(v)"}], "\n")
				}
			}
			dir: "/src"
			mount: {
				"/src": from: source
				"/cache/yarn": "cache"
			}
		},
		op.#Subdir & {
			dir: "/build"
		},
	]
}