diff options
| -rw-r--r-- | .gitignore | 2 | ||||
| -rw-r--r-- | Makefile | 8 | ||||
| -rw-r--r-- | ideas.html | 1 | ||||
| -rw-r--r-- | main.go | 125 |
4 files changed, 83 insertions, 53 deletions
@@ -1 +1,3 @@ tmp/ +ideez +ideas.data diff --git a/Makefile b/Makefile deleted file mode 100644 index 4c6863a..0000000 --- a/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -VERSION= $(shell git describe --tags) -LDFLAGS = -X "main.airVersion=$(VVERSION)" - -build: - go build -ldflags '$(LDFLAGS)' - -install: - go install -ldflags '$(LDFLAGS)' @@ -45,7 +45,6 @@ {{ range .Ideas }} <div class="idea"> <h2 class="title">{{.Title}}</h2> - <p class="rating">{{.Rating}}/5</p> <p class="description">{{.Description}}</p> <p class="creation">by <span class="author">{{.Author}}</span> on <span class="date">{{.CreatedAt}}</span></p> </div> @@ -2,14 +2,21 @@ package main import ( _ "embed" - "fmt" + "encoding/gob" "html/template" + "io" "log" "net/http" + "os" + "os/signal" + "runtime/debug" ) // File for persistent storage -const DataFilename = "main.data" +var DataFilename = "ideas.data" + +// Version number used for debugging compatibility with the .data file +var Version string // layout for how the date should be output in html var DateLayout string = "02/01/2006 on 15:04" @@ -19,13 +26,15 @@ var DateLayout string = "02/01/2006 on 15:04" //go:embed ideas.html var ideas_html string +var data Store + // ToDo's // - [ ] Add a post -// - [ ] Serialize data to a file // - [ ] Remove a post -// - [x] Change the date format printing // - [ ] work with funcmaps in templates // - [ ] Put a reaction on a post +// - [x] Store ideas to a file (encoder/gob) +// - [x] Change the date format printing // Represents an idea // CreatedAt is a formatted date string @@ -38,59 +47,87 @@ type Idea struct { CreatedAt string } -func main() { - var ideas []Idea +// Data needed through the programm, this data is written to DataFilename for persistent storage +// Is also the format for the Data file +type Store struct { + Version string + Ideas []Idea +} - // Create a .data file in the cache directory - { - // data := os.Getenv("XDG_CACHE_HOME") - // if data == "" { - // data = "." - // } - // data = data + "" - // - // file, err := os.Create(data + "/" + DataFilename) - // if err != nil { - // panic(err) - // } +func GetVersion() string { + buildinfo, ok := debug.ReadBuildInfo() + if !ok { + log.Fatalln("Could not read buildinfo to know package version.") } - // hardcoded data + return buildinfo.Main.Version +} + +func main() { + Version = GetVersion() + + // Create a .data file in the cache directory and decode eventual ideas from it { - ideas = []Idea{ - { - Title: "Better Keylogger", - Description: "Keylogger which records statistics about your typing.", - Author: "Me", - CreatedAt: "26/09/2024 on 14:51", - }, - { - Title: "music tracker", - Description: "An app that can track music across multiple music apps such as spotify, apple music, deezer, etc.", - Author: "Me", - CreatedAt: "24/09/2024 on 14:32", - }, - { - Title: "automated hosting", - Description: "Service to host a website where people can drag&drop their files and they are hosted, it also provides a subdomain automatically.", - Author: "Him", - }, + p := os.Getenv("XDG_CACHE_HOME") + // TODO: remove for testing + p = "" + if p == "" { + p = "." + } + DataFilename = p + "/" + DataFilename + + f, err := os.OpenFile(DataFilename, os.O_RDONLY|os.O_CREATE, 0666) + if err != nil { + log.Fatalln("Error while opening data file:", err) + } + + dec := gob.NewDecoder(f) + if err := dec.Decode(&data); err != io.EOF && err != nil { + log.Fatalln("Error while decoding ideas:", err) + } + log.Println(data) + + if data.Version != Version { + log.Fatalf("Version mismatch for datafile@%s != package@%s\n", data.Version, Version) + } + + log.Printf("Imported @%s: %d ideas\n", data.Version, len(data.Ideas)) + if err := f.Close(); err != nil { + log.Fatalln("Error while closing file:", err) } } - // // Example of parsing a string into time with the layout - // CreatedAt: func() string { - // t, _ := time.Parse(DateLayout, "24/09/2024 on 14:40") - // return t.Format(DateLayout) - tmpl, err := template.New("mytemplate").Parse(ideas_html) + // Handle SIGINT + // On program exit it should write all its data to the datafile + // TODO: Instead of recreating the file the new ideas should be appended, a way to achieve this would be that every time a new idea is added it is appended to the file, this way there is no need to ensure this. + go func() { + c := make(chan os.Signal, 1) + signal.Notify(c, os.Interrupt) + <-c + + f, err := os.Create(DataFilename) + if err != nil { + log.Fatalln(err) + } + defer f.Close() + + enc := gob.NewEncoder(f) + if err := enc.Encode(data); err != nil { + log.Fatalln(err) + } + log.Println("data saved.") + os.Exit(0) + }() + + tmpl, err := template.New("ideas_html").Parse(ideas_html) if err != nil { log.Fatalln(err) } http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { - tmpl.Execute(w, struct{ Ideas []Idea }{ideas}) + tmpl.Execute(w, data) }) - fmt.Println("Listening on http://localhost:8080") + log.Println("Listening on http://localhost:8080") err = http.ListenAndServe(":8080", nil) if err != nil { log.Fatalln(err) |