start on the road

.drone.yml

@@ -0,0 +1,36 @@
+---
+kind: pipeline
+name: build
+
+steps:
+  - name: build
+    pull: always
+    image: golang
+    commands:
+      - go build -a -o drone-goreportcard .
+    environment:
+      - GO111MODULE=on
+      - CGO_ENABLED=0
+
+  - name: dryrun
+    pull: always
+    image: plugins/docker
+    settings:
+      cache_from: lddsb/drone-goreportcard
+      dockerfile: Dockerfile
+      dryrun: true
+      repo: lddsb/drone-goreportcard
+      tags: latest
+
+  - name: publish
+    pull: always
+    image: plugins/docker
+    settings:
+      cache_from: lddsb/drone-goreportcard
+      dockerfile: Dockerfile
+      repo: lddsb/drone-goreportcard
+      tags: latest
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password

.gitignore

@@ -0,0 +1 @@
+drone-goreportcard

Dockerfile

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+FROM alpine:latest
+
+RUN apk update && \
+    apk add \
+    ca-certificates && \
+    rm -rf /var/cache/apk/*
+
+COPY drone-goreportcard /bin
+
+ENTRYPOINT ["/bin/drone-goreportcard"]

README.md

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+# Go Report Card Drone Plugin
+[![Build Status](https://drone.lddsb.com/api/badges/lddsb/drone-goreportcard/status.svg)](https://drone.lddsb.com/lddsb/drone-goreportcard) 
+[Drone CI](https://drone.io) plugin to auto refresh your project status in [go report card](https://goreportcard.com)
+### Usage
+
+```yaml
+kind: pipeline
+name: default
+
+steps:
+...
+- name: goreportcard
+  pull: always
+  image: lddsb/drone-goreportcard
+  
+```

go.mod

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+module drone-goreportcard
+
+go 1.12
+
+require github.com/urfave/cli v1.20.0

go.sum

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+github.com/urfave/cli v1.20.0 h1:fDqGv3UG/4jbVl/QkFwEdddtEDjh/5Ov6X+0B/3bPaw=
+github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=

main.go

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+package main
+
+import (
+	"log"
+	"os"
+
+	"github.com/urfave/cli"
+)
+
+// Version `cli version`
+var Version = "20190309"
+
+func main() {
+	app := cli.NewApp()
+	app.Name = "Drone Plugin GoReportCard"
+	app.Usage = "fresh go report card message"
+	app.Copyright = "© 2019 Dee Luo"
+	app.Authors = []cli.Author{
+		{
+			Name:  "Dee Luo",
+			Email: "luodi0128@gmail.com",
+		},
+	}
+	app.Action = run
+	app.Version = Version
+	app.Flags = []cli.Flag{
+		cli.StringFlag{
+			Name:   "config.url",
+			Usage:  "repository http url",
+			EnvVar: "DRONE_GIT_HTTP_URL",
+		},
+	}
+
+	if err := app.Run(os.Args); nil != err {
+		log.Fatal(err)
+	}
+}
+
+func run(c *cli.Context) error {
+	p := Plugin{
+		URL: c.String("config.url"),
+	}
+	return p.Exec()
+}

plugin.go

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+package main
+
+import (
+	"errors"
+	"io/ioutil"
+	"log"
+	"net/http"
+)
+
+type (
+	// Plugin `plugin struct`
+	Plugin struct {
+		URL string
+	}
+)
+
+var baseURL = "https://goreportcard.com/"
+
+// Exec `exec plugin`
+func (p *Plugin) Exec() error {
+	urlLen := len(p.URL)
+	if 4 > urlLen {
+		return errors.New("invalid repository url")
+	}
+
+	suffix := p.URL[urlLen-4:]
+	if ".git" == suffix {
+		p.URL = p.URL[:urlLen-4]
+	}
+	resp, err := http.Get(baseURL + "checks?repo=" + p.URL)
+	if nil != err {
+		return err
+	}
+
+	defer resp.Body.Close()
+
+	if http.StatusOK != resp.StatusCode {
+		bs, err := ioutil.ReadAll(resp.Body)
+		if nil == err {
+			return errors.New("API response error: " + string(bs))
+		}
+
+		return err
+	}
+
+	log.Println("Everything is OK")
+	return err
+}