package stack

import (
	"strings"
	"testing"
)

// full — output lengkap seperti tampil ke user (sudah termasuk komentar warning).
func full(r ConvertResult) string { return r.Output }

func checkGolden(t *testing.T, name, cmd, want string) {
	t.Helper()
	got, err := Convert(cmd)
	if err != nil {
		t.Fatalf("%s: Convert error: %v", name, err)
	}
	g := full(got)
	if strings.TrimSpace(g) != strings.TrimSpace(want) {
		t.Fatalf("%s: YAML beda.\n--- dapat ---\n%s\n--- mau ---\n%s", name, g, want)
	}
}

func TestConvertVectors(t *testing.T) {
	checkGolden(t, "V1 basic", "docker run -p 80:80 foobar/baz:latest", `
services:
  baz:
    ports:
      - 80:80
    image: foobar/baz:latest`)

	checkGolden(t, "V2 flags umum",
		"docker run -d --name web -p 8080:80 -v ./html:/usr/share/nginx/html:ro -e TZ=Asia/Jakarta --restart unless-stopped nginx:latest", `
services:
  nginx:
    container_name: web
    ports:
      - 8080:80
    volumes:
      - ./html:/usr/share/nginx/html:ro
    environment:
      - TZ=Asia/Jakarta
    restart: unless-stopped
    image: nginx:latest`)

	checkGolden(t, "V3 multiline + $()", `docker run \
  -d \
  --name tor-relay \
  -e TZ=Europe/London \
  -e PUID=$(id -u) \
  -v $(pwd)/tor/data:/data:Z \
  -p 9001:9001 \
  --restart always \
  ilshidur/tor-relay`, `
services:
  tor-relay:
    container_name: tor-relay
    environment:
      - TZ=Europe/London
      - PUID=$(id -u)
    volumes:
      - $(pwd)/tor/data:/data:Z
    ports:
      - 9001:9001
    restart: always
    image: ilshidur/tor-relay`)

	checkGolden(t, "V4 kutip nilai", `docker run --name="foobar" -e GREETING="hello world" nginx`, `
services:
  nginx:
    container_name: foobar
    environment:
      - GREETING=hello world
    image: nginx`)

	checkGolden(t, "V5 -p nempel", "docker run -p8080:80 nginx", `
services:
  nginx:
    ports:
      - 8080:80
    image: nginx`)

	checkGolden(t, "V6 flag tak dikenal", "docker run -d -z machin --unknown-long=truc nginx", `
# ignored options for 'nginx'
# -z=machin
# --unknown-long=truc
services:
  nginx:
    image: nginx`)

	checkGolden(t, "V7 network bernama", "docker run --network appnet nginx", `
# named network 'appnet' is marked as "external" (used by service 'nginx'), so either remove "external" from network definition or it needs to be created using: docker network create -d bridge appnet
services:
  nginx:
    networks:
      - appnet
    image: nginx
networks:
  appnet:
    external: true
    name: appnet`)

	checkGolden(t, "V8 network host", "docker run --network host -p 8080:80 nginx", `
services:
  nginx:
    network_mode: host
    image: nginx`)

	checkGolden(t, "V9 named volume", "docker run -v vol:/data nginx", `
services:
  nginx:
    volumes:
      - vol:/data
    image: nginx
volumes:
  vol: {}`)

	checkGolden(t, "V10 mount long syntax",
		"docker run --mount type=bind,source=/host,target=/container,readonly nginx", `
services:
  nginx:
    volumes:
      - type: bind
        source: /host
        target: /container
        readonly: true
    image: nginx`)

	checkGolden(t, "V11 healthcheck",
		`docker run --health-cmd "curl -f http://localhost/" --health-interval 30s --health-retries 3 --health-timeout 5s --health-start-period 10s nginx`, `
services:
  nginx:
    healthcheck:
      test: curl -f http://localhost/
      interval: 30s
      retries: 3
      timeout: 5s
      start_period: 10s
    image: nginx`)

	checkGolden(t, "V12 log opt", "docker run --log-opt max-size=1g --log-opt max-file=3 --restart always nginx", `
services:
  nginx:
    logging:
      options:
        max-size: 1g
        max-file: 3
    restart: always
    image: nginx`)

	checkGolden(t, "V13 limits", "docker run --memory 512m --cpus 1.5 --pids-limit 200 nginx", `
services:
  nginx:
    deploy:
      resources:
        limits:
          memory: 512m
          cpus: 1.5
          pids: 200
    image: nginx`)

	checkGolden(t, "V14 gpus", "docker run --gpus all nvidia/cuda:12.0-base", `
services:
  cuda:
    deploy:
      resources:
        reservations:
          devices:
            - driver: nvidia
              count: all
              capabilities:
                - gpu
    image: nvidia/cuda:12.0-base`)

	checkGolden(t, "V15 command setelah image", "docker run nginx:alpine nginx -g daemon off;", `
services:
  nginx:
    image: nginx:alpine
    command: nginx -g daemon off`)

	// V16 (multi perintah) menyusul — dicatat di docs/rea/composerize.md.

	checkGolden(t, "V18 env-file + env", "docker run --env-file .env -e DEBUG=1 app/api:1.2", `
services:
  api:
    env_file:
      - .env
    environment:
      - DEBUG=1
    image: app/api:1.2`)

	checkGolden(t, "V19 ulimit", "docker run --ulimit nofile=1024:2048 --ulimit nproc=65535 nginx", `
services:
  nginx:
    ulimits:
      nofile:
        soft: 1024
        hard: 2048
      nproc: 65535
    image: nginx`)

	checkGolden(t, "V20 ip + network", "docker run --network appnet --ip 10.0.0.5 nginx", `
# named network 'appnet' is marked as "external" (used by service 'nginx'), so either remove "external" from network definition or it needs to be created using: docker network create -d bridge appnet
services:
  nginx:
    networks:
      appnet:
        ipv4_address: 10.0.0.5
    image: nginx
networks:
  appnet:
    external: true
    name: appnet`)
}

func TestConvertErrors(t *testing.T) {
	if _, err := Convert("foo bar"); err == nil {
		t.Fatal("bukan docker run harus error")
	}
	if _, err := Convert("docker run -d"); err == nil {
		t.Fatal("tanpa image harus error")
	}
}

func TestServiceNameFromImage(t *testing.T) {
	cases := map[string]string{
		"nginx":                      "nginx",
		"nginx:latest":               "nginx",
		"foobar/baz:latest":          "baz",
		"registry.local:5000/app:v1": "app",
		"ghcr.io/org/app":            "app",
	}
	for in, want := range cases {
		if got := serviceNameFromImage(in); got != want {
			t.Errorf("%s → %s, mau %s", in, got, want)
		}
	}
}