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Add .env & move webserver to a new package
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| Redis_Addr="" | ||
| Redis_Pwd="" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| package webserver | ||
|
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| import ( | ||
| "github.com/gin-contrib/cors" | ||
| "github.com/gin-gonic/gin" | ||
| "github.com/steveyiyo/url-shortener/internal/cache" | ||
| "github.com/steveyiyo/url-shortener/internal/database" | ||
| "github.com/steveyiyo/url-shortener/package/tools" | ||
| ) | ||
|
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| // Predefined variable and struct | ||
| type Config struct { | ||
| Host string `yaml:"Host"` | ||
| Port string `yaml:"Port"` | ||
| } | ||
|
|
||
| type Result struct { | ||
| Status bool | ||
| Message string | ||
| } | ||
|
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| var Listen string | ||
| var Host string | ||
| var Port string | ||
| var URL string | ||
|
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| type Data struct { | ||
| URL string `json:"url"` | ||
| ExpiredAt string `json:"expireAt"` | ||
| } | ||
|
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| type URLid struct { | ||
| ID string `json:"id"` | ||
| ShortURL string `json:"shortUrl"` | ||
| } | ||
|
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| func Init(Init_Listen, Init_Host, Init_Port, Init_URL string) { | ||
|
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| Listen = Init_Listen | ||
| Host = Init_Host | ||
| Port = Init_Port | ||
| URL = Init_URL | ||
|
|
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| // Init Web Server | ||
| gin.SetMode(gin.ReleaseMode) | ||
| route := gin.New() | ||
| route.Use(gin.Logger(), gin.Recovery()) | ||
|
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| config := cors.DefaultConfig() | ||
| config.AllowOrigins = []string{"*"} | ||
|
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| route.Use(cors.New(config)) | ||
| route.GET("/:ShortID", RedirectURL) | ||
| route.POST("/api/v1/urls", AddURL) | ||
|
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| route.Run(Listen + ":" + Port) | ||
| } | ||
|
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| // AddURL | ||
| func AddURL(c *gin.Context) { | ||
| // Get JSON Data | ||
| var data Data | ||
| c.BindJSON(&data) | ||
|
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| // Init return result | ||
| var return_data URLid | ||
|
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| // Check Time and Convert to Unix format | ||
| isTimestampOk, timestamp := tools.ConvertTimetoUnix(data.ExpiredAt) | ||
|
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| // Check Limit IP | ||
| limit_check, _ := cache.QueryData(c.ClientIP()) | ||
|
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| // Check Limit | ||
| if !limit_check { | ||
| // Check Link and Time Valid | ||
| if tools.CheckLinkValid(data.URL) && (isTimestampOk) { | ||
|
|
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| // Random Short ID | ||
| ShortID := tools.RandomString(5) | ||
|
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| // Add data to DB | ||
| database.AddData(ShortID, data.URL, timestamp) | ||
|
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| // Add Limit IP to Redis | ||
| cache.AddData(c.ClientIP(), "", 5) | ||
|
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| // Return result | ||
| return_data = URLid{ID: ShortID, ShortURL: URL + ShortID} | ||
| c.JSON(200, return_data) | ||
| } else { | ||
| // Return result | ||
| return_data = URLid{ID: "", ShortURL: ""} | ||
| c.JSON(400, return_data) | ||
| } | ||
| } else { | ||
| // Return result | ||
| var return_result Result | ||
| return_result = Result{Status: false, Message: "Too many requests, please try again later."} | ||
| c.JSON(400, return_result) | ||
| } | ||
| } | ||
|
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| // RedirectURL | ||
| func RedirectURL(c *gin.Context) { | ||
|
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| // Get Short ID from URL | ||
| ID := c.Param("ShortID") | ||
|
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| // Query Link in Redis | ||
| isExist, URL := cache.QueryData(ID) | ||
| if !isExist { | ||
| // Query Link in DB | ||
| Check, Link := database.QueryData(ID) | ||
| if Check { | ||
| // Add hit to Redis | ||
| cache.AddData(ID, Link, 30) | ||
| c.Redirect(301, Link) | ||
| } else { | ||
| // Add miss link to Redis (Not Found or Expire) | ||
| cache.AddData(ID, "MISS", 30) | ||
|
|
||
| // Return result | ||
| var return_result Result | ||
| return_result = Result{Status: false, Message: "Not Found."} | ||
| c.JSON(404, return_result) | ||
| } | ||
| } else { | ||
| if URL == "MISS" { | ||
| // Return result | ||
| var return_result Result | ||
| return_result = Result{Status: false, Message: "Not Found."} | ||
| c.JSON(404, return_result) | ||
| } else { | ||
| c.Redirect(301, URL) | ||
| } | ||
| } | ||
| } |
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