Create & Init Project...

app/interface/main/shorturl/model/BUILD

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+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "calc.go",
+        "const.go",
+        "shorturl.go",
+    ],
+    importpath = "go-common/app/interface/main/shorturl/model",
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+    deps = ["//library/time:go_default_library"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

app/interface/main/shorturl/model/calc.go

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+package model
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"strconv"
+)
+
+// TODO move to model
+
+const (
+	shortUrlLength = 6
+)
+
+var (
+	chars = [62]string{
+		"a", "b", "c", "d", "e", "f", "g", "h",
+		"i", "j", "k", "l", "m", "n", "o", "p",
+		"q", "r", "s", "t", "u", "v", "w", "x",
+		"y", "z", "0", "1", "2", "3", "4", "5",
+		"6", "7", "8", "9", "A", "B", "C", "D",
+		"E", "F", "G", "H", "I", "J", "K", "L",
+		"M", "N", "O", "P", "Q", "R", "S", "T",
+		"U", "V", "W", "X", "Y", "Z",
+	}
+)
+
+// generate short url from long url
+func Generate(long string) [4]string {
+	var resUrl [4]string
+	h := md5.New()
+	h.Write([]byte(long))
+	hexstr := hex.EncodeToString(h.Sum(nil))
+	for i := 0; i < 4; i++ {
+		start := i * 8
+		end := start + 8
+		s := hexstr[start:end]
+		hexInt, _ := strconv.ParseInt(s, 16, 64)
+		hexInt = 0x3FFFFFFF & hexInt
+		var out string = ""
+		for n := 0; n < shortUrlLength; n++ {
+			index := 0x0000003D & hexInt
+			out += chars[index]
+			hexInt = hexInt >> 5
+		}
+		resUrl[i] = out
+	}
+	return resUrl
+}

app/interface/main/shorturl/model/const.go

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+package model
+
+const (
+	// EnvPro is pro.
+	EnvPro = "pro"
+	// EnvTest is env.
+	EnvTest = "test"
+	// EnvDev is env.
+	EnvDev = "dev"
+)

app/interface/main/shorturl/model/shorturl.go

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+package model
+
+import xtime "go-common/library/time"
+
+const (
+	StateNormal = 0
+	StateDelted = 1
+)
+
+type ShortUrl struct {
+	ID         int64      `json:"id"`
+	Mid        int64      `json:"mid"`
+	Short      string     `json:"short"`
+	Long       string     `json:"long"`
+	State      int8       `json:"state"`
+	CTime      xtime.Time `json:"-"`
+	MTime      xtime.Time `json:"-"`
+	CreateTime string     `json:"ctime"`
+}
+
+type Param struct {
+	ID  int64  `form:"id"`
+	Mid int64  `form:"mid"`
+	Uri string `form:"url"`
+	Pn  string `form:"pn"`
+	Ps  string `form:"ps"`
+}
+
+func (s *ShortUrl) FormatDate() {
+	s.CreateTime = s.CTime.Time().Format("2006-01-02 15:04:05")
+}