import { readFileSync } from 'fs';
import { extractPackageFile } from './extract';

const d1 = readFileSync(
  'lib/manager/dockerfile/__fixtures__/Dockerfile1',
  'utf8'
);

describe('lib/manager/dockerfile/extract', () => {
  describe('extractPackageFile()', () => {
    it('handles no FROM', () => {
      const res = extractPackageFile('no from!');
      expect(res).toBeNull();
    });
    it('handles naked dep', () => {
      const res = extractPackageFile('FROM node\n').deps;
      expect(res).toMatchSnapshot();
    });
    it('is case insensitive', () => {
      const res = extractPackageFile('From node\n').deps;
      expect(res).toMatchSnapshot();
    });
    it('handles tag', () => {
      const res = extractPackageFile('FROM node:8.9.0-alpine\n').deps;
      expect(res).toMatchSnapshot();
    });
    it('handles digest', () => {
      const res = extractPackageFile(
        'FROM node@sha256:eb85fc5b1198f5e1ec025ea07586bdbbf397e7d82df66c90d7511f533517e063\n'
      ).deps;
      expect(res).toMatchSnapshot();
    });
    it('handles tag and digest', () => {
      const res = extractPackageFile(
        'FROM node:8.9.0@sha256:eb85fc5b1198f5e1ec025ea07586bdbbf397e7d82df66c90d7511f533517e063\n'
      ).deps;
      expect(res).toMatchSnapshot();
    });
    it('handles from as', () => {
      const res = extractPackageFile('FROM node:8.9.0-alpine as base\n').deps;
      expect(res).toMatchSnapshot();
    });
    it('handles comments', () => {
      const res = extractPackageFile('# some comment\n# another\n\nFROM node\n')
        .deps;
      expect(res).toMatchSnapshot();
    });
    it('handles custom hosts', () => {
      const res = extractPackageFile('FROM registry2.something.info/node:8\n')
        .deps;
      expect(res).toMatchSnapshot();
    });
    it('handles custom hosts and suffix', () => {
      const res = extractPackageFile(
        'FROM registry2.something.info/node:8-alpine\n'
      ).deps;
      expect(res).toMatchSnapshot();
    });
    it('handles custom hosts with port', () => {
      const res = extractPackageFile(
        'FROM registry2.something.info:5005/node:8\n'
      ).deps;
      expect(res).toMatchSnapshot();
      expect(res[0].depName).toEqual('registry2.something.info:5005/node');
      expect(res[0].currentValue).toEqual('8');
    });
    it('handles custom hosts with port without tag', () => {
      const res = extractPackageFile(
        'FROM registry2.something.info:5005/node\n'
      ).deps;
      expect(res).toMatchSnapshot();
      expect(res[0].depName).toEqual('registry2.something.info:5005/node');
    });
    it('handles namespaced images', () => {
      const res = extractPackageFile('FROM mynamespace/node:8\n').deps;
      expect(res).toMatchSnapshot();
    });
    it('handles custom hosts with namespace', () => {
      const res = extractPackageFile(
        'FROM registry2.something.info/someaccount/node:8\n'
      ).deps;
      expect(res).toMatchSnapshot();
    });
    it('handles abnoral spacing', () => {
      const res = extractPackageFile(
        'FROM    registry.allmine.info:5005/node:8.7.0\n\n'
      ).deps;
      expect(res).toMatchSnapshot();
    });
    it('extracts multiple FROM tags', () => {
      const res = extractPackageFile(
        'FROM node:6.12.3 as frontend\n\n# comment\nENV foo=bar\nFROM python:3.6-slim\n'
      ).deps;
      expect(res).toMatchSnapshot();
      expect(res).toHaveLength(2);
    });
    it('skips scratchs', () => {
      const res = extractPackageFile('FROM scratch\nADD foo\n');
      expect(res).toBeNull();
    });
    it('skips named multistage FROM tags', () => {
      const res = extractPackageFile(
        'FROM node:6.12.3 as frontend\n\n# comment\nENV foo=bar\nFROM frontend\n'
      ).deps;
      expect(res).toMatchSnapshot();
      expect(res).toHaveLength(1);
    });
    it('handles COPY --from', () => {
      const res = extractPackageFile(
        'FROM scratch\nCOPY --from=gcr.io/k8s-skaffold/skaffold:v0.11.0 /usr/bin/skaffold /usr/bin/skaffold\n'
      ).deps;
      expect(res).toMatchSnapshot();
    });
    it('skips named multistage COPY --from tags', () => {
      const res = extractPackageFile(
        'FROM node:6.12.3 as frontend\n\n# comment\nENV foo=bar\nCOPY --from=frontend /usr/bin/node /usr/bin/node\n'
      ).deps;
      expect(res).toMatchSnapshot();
      expect(res).toHaveLength(1);
    });
    it('skips index reference COPY --from tags', () => {
      const res = extractPackageFile(
        'FROM node:6.12.3 as frontend\n\n# comment\nENV foo=bar\nCOPY --from=0 /usr/bin/node /usr/bin/node\n'
      ).deps;
      expect(res).toMatchSnapshot();
      expect(res).toHaveLength(1);
    });
    it('detects ["stage"] and ["final"] deps of docker multi-stage build.', () => {
      const res = extractPackageFile(
        'FROM node:8.15.1-alpine as skippedfrom\nFROM golang:1.7.3 as builder\n\n# comment\nWORKDIR /go/src/github.com/alexellis/href-counter/\nRUN go get -d -v golang.org/x/net/html  \nCOPY app.go    .\nRUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .\n\nFROM alpine:latest  \nRUN apk --no-cache add ca-certificates\nWORKDIR /root/\nCOPY --from=builder /go/src/github.com/alexellis/href-counter/app .\nCMD ["./app"]\n'
      ).deps;
      expect(res).toMatchSnapshot();
      const passed = [
        res[2].depType === 'final',
        res[1].depType === 'stage',
        res[0].depType === 'stage',
        res[2].managerData.lineNumber > res[1].managerData.lineNumber,
        res[2].managerData.lineNumber > res[0].managerData.lineNumber,
      ].every(Boolean);
      expect(passed).toBe(true);
    });
    it('extracts images on adjacent lines', () => {
      const res = extractPackageFile(d1).deps;
      expect(res).toMatchSnapshot();
      expect(res).toHaveLength(2);
    });
    it('handles calico/node', () => {
      const res = extractPackageFile('FROM calico/node\n').deps;
      expect(res).toMatchSnapshot();
    });
  });
});