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golang/introduction/part-4.commandline/videos/main.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,102 +1,111 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "flag" | ||
| "fmt" | ||
| "os" | ||
| ) | ||
|
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| func main() { | ||
|
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| //'videos get' subcommand | ||
| getCmd := flag.NewFlagSet("get", flag.ExitOnError) | ||
| getAll := getCmd.Bool("all", false, "Get all videos") | ||
| getID := getCmd.String("id", "", "YouTube video ID") | ||
|
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| //'videos add' subcommand | ||
| addCmd := flag.NewFlagSet("add", flag.ExitOnError) | ||
| addID := addCmd.String("id", "", "YouTube video ID") | ||
| addTitle := addCmd.String("title", "", "YouTube video Title") | ||
| addUrl := addCmd.String("url", "", "YouTube video URL") | ||
| addImageUrl := addCmd.String("imageurl", "", "YouTube video Image URL") | ||
| addDesc := addCmd.String("desc", "", "YouTube video description") | ||
|
|
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| if len(os.Args) < 2 { | ||
| fmt.Println("expected 'get' or 'add' subcommands") | ||
| os.Exit(1) | ||
| } | ||
|
|
||
| //look at the 2nd argument's value | ||
| switch os.Args[1] { | ||
| case "get": // if its the 'get' command | ||
| HandleGet(getCmd, getAll, getID) | ||
| case "add": // if its the 'add' command | ||
| HandleAdd(addCmd, addID,addTitle,addUrl, addImageUrl, addDesc) | ||
| default: // if we don't understand the input | ||
| fmt.Println("expected 'get' or 'add' subcommands") | ||
| os.Exit(1) | ||
| } | ||
| } | ||
|
|
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| func HandleGet(getCmd *flag.FlagSet, all *bool, id *string){ | ||
| getCmd.Parse(os.Args[2:]) | ||
|
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| if *all == false && *id == "" { | ||
| fmt.Print("id is required or specify --all for all videos") | ||
| getCmd.PrintDefaults() | ||
| os.Exit(1) | ||
| } | ||
|
|
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| if *all { | ||
| //return all videos | ||
| videos := getVideos() | ||
|
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| fmt.Printf("ID \t Title \t URL \t ImageURL \t Description \n") | ||
| for _, video := range videos { | ||
| fmt.Printf("%v \t %v \t %v \t %v \t %v \n",video.Id, video.Title, video.Url, video.Imageurl,video.Description) | ||
| } | ||
|
|
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| return | ||
| } | ||
|
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| if *id != "" { | ||
| videos := getVideos() | ||
| id := *id | ||
| for _, video := range videos { | ||
| if id == video.Id { | ||
| fmt.Printf("ID \t Title \t URL \t ImageURL \t Description \n") | ||
| fmt.Printf("%v \t %v \t %v \t %v \t %v \n",video.Id, video.Title, video.Url, video.Imageurl,video.Description) | ||
|
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| } | ||
| } | ||
| } | ||
| } | ||
|
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| func ValidateVideo(addCmd *flag.FlagSet,id *string, title *string, url *string, imageUrl *string, description *string ){ | ||
|
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| if *id == "" || *title == "" || *url == "" || *imageUrl == "" || *description == "" { | ||
| fmt.Println("all fields are required for adding a video") | ||
| addCmd.PrintDefaults() | ||
| os.Exit(1) | ||
| } | ||
|
|
||
| } | ||
|
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| func HandleAdd(addCmd *flag.FlagSet,id *string, title *string, url *string, imageUrl *string, description *string ){ | ||
| addCmd.Parse(os.Args[2:]) | ||
|
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| ValidateVideo(addCmd, id,title,url, imageUrl, description) | ||
|
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| video := video{ | ||
| Id: *id, | ||
| Title: *title, | ||
| Description: *description, | ||
| Imageurl: *imageUrl, | ||
| Url: *url, | ||
| } | ||
|
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| videos := getVideos() | ||
| videos = append(videos,video) | ||
|
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| saveVideos(videos) | ||
| } | ||
| package main | ||
|
|
||
| import ( | ||
| "flag" | ||
| "fmt" | ||
| "os" | ||
| ) | ||
|
|
||
| func main() { | ||
|
|
||
| //'videos get' subcommand | ||
| getCmd := flag.NewFlagSet("get", flag.ExitOnError) | ||
|
|
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| // inputs for `videos get` command | ||
| getAll := getCmd.Bool("all", false, "Get all videos") | ||
| getID := getCmd.String("id", "", "YouTube video ID") | ||
|
|
||
| //'videos add' subcommand | ||
| addCmd := flag.NewFlagSet("add", flag.ExitOnError) | ||
|
|
||
| // inputs for `videos add` command | ||
| addID := addCmd.String("id", "", "YouTube video ID") | ||
| addTitle := addCmd.String("title", "", "YouTube video Title") | ||
| addUrl := addCmd.String("url", "", "YouTube video URL") | ||
| addImageUrl := addCmd.String("imageurl", "", "YouTube video Image URL") | ||
| addDesc := addCmd.String("desc", "", "YouTube video description") | ||
|
|
||
| if len(os.Args) < 2 { | ||
| fmt.Println("expected 'get' or 'add' subcommands") | ||
| os.Exit(1) | ||
| } | ||
|
|
||
| //look at the 2nd argument's value | ||
| switch os.Args[1] { | ||
| case "get": // if its the 'get' command | ||
| HandleGet(getCmd, getAll, getID) | ||
| case "add": // if its the 'add' command | ||
| HandleAdd(addCmd, addID,addTitle,addUrl, addImageUrl, addDesc) | ||
| default: // if we don't understand the input | ||
| } | ||
|
|
||
|
|
||
| } | ||
|
|
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| func HandleGet(getCmd *flag.FlagSet, all *bool, id *string){ | ||
|
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| getCmd.Parse(os.Args[2:]) | ||
|
|
||
| if *all == false && *id == "" { | ||
| fmt.Print("id is required or specify --all for all videos") | ||
| getCmd.PrintDefaults() | ||
| os.Exit(1) | ||
| } | ||
|
|
||
| if *all { | ||
| //return all videos | ||
| videos := getVideos() | ||
|
|
||
| fmt.Printf("ID \t Title \t URL \t ImageURL \t Description \n") | ||
| for _, video := range videos { | ||
| fmt.Printf("%v \t %v \t %v \t %v \t %v \n",video.Id, video.Title, video.Url, video.Imageurl,video.Description) | ||
| } | ||
|
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| return | ||
| } | ||
|
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| if *id != "" { | ||
| videos := getVideos() | ||
| id := *id | ||
| for _, video := range videos { | ||
| if id == video.Id { | ||
| fmt.Printf("ID \t Title \t URL \t ImageURL \t Description \n") | ||
| fmt.Printf("%v \t %v \t %v \t %v \t %v \n",video.Id, video.Title, video.Url, video.Imageurl,video.Description) | ||
| } | ||
| } | ||
| } | ||
|
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||
|
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||
|
|
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| } | ||
|
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| func ValidateVideo(addCmd *flag.FlagSet,id *string, title *string, url *string, imageUrl *string, description *string ){ | ||
|
|
||
| addCmd.Parse(os.Args[2:]) | ||
|
|
||
| if *id == "" || *title == "" || *url == "" || *imageUrl == "" || *description == "" { | ||
| fmt.Print("all fields are required for adding a video") | ||
| addCmd.PrintDefaults() | ||
| os.Exit(1) | ||
| } | ||
|
|
||
| } | ||
|
|
||
| func HandleAdd(addCmd *flag.FlagSet,id *string, title *string, url *string, imageUrl *string, description *string ){ | ||
|
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| ValidateVideo(addCmd, id,title,url, imageUrl, description) | ||
|
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| video := video{ | ||
| Id: *id, | ||
| Title: *title, | ||
| Description: *description, | ||
| Imageurl: *imageUrl, | ||
| Url: *url, | ||
| } | ||
|
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| videos := getVideos() | ||
| videos = append(videos,video) | ||
|
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| saveVideos(videos) | ||
|
|
||
| } |
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