158 lines
3.4 KiB
Go
158 lines
3.4 KiB
Go
package main
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import (
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"fmt"
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"log"
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"net/http"
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"path/filepath"
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"strconv"
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"time"
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"git.andreafazzi.eu/andrea/youtube-dl-service/downloader"
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youtube_dl "git.andreafazzi.eu/andrea/youtube-dl-service/downloader/youtube-dl"
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"git.andreafazzi.eu/andrea/youtube-dl-service/task"
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jwt "github.com/dgrijalva/jwt-go"
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"github.com/gin-contrib/cors"
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"github.com/gin-gonic/gin"
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)
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const (
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DefaultJWTExpireTime = 60
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DefaultSigningKey = "secret"
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)
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var tasks task.Tasks
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func init() {
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log.SetPrefix("[youtube-dl-service] ")
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tasks = make(task.Tasks, 0)
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}
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func download(c *gin.Context, downloader downloader.Downloader) error {
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video, err := downloader.GetVideo()
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if err != nil {
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return err
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}
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c.JSON(http.StatusOK, video)
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go downloader.StartDownload(video, tasks)
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return nil
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}
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func createTask(c *gin.Context) {
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err := c.Request.ParseForm()
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if err != nil {
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panic(err)
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}
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if err := download(c, youtube_dl.NewYoutubeDlDownloader(c.PostForm("url"), "yt-dlp")); err != nil {
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panic(err)
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}
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}
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func getTask(c *gin.Context, id string) error {
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task, ok := tasks[id]
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if ok {
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c.JSON(http.StatusOK, task)
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}
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return nil
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}
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func data(c *gin.Context, id string) error {
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c.Writer.Header().Set("Content-Disposition", "attachment; filename="+strconv.Quote(tasks[id].Filename))
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c.Writer.Header().Set("Content-Type", "application/octet-stream")
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http.ServeFile(c.Writer, c.Request, filepath.Join("data", id+filepath.Ext(tasks[id].Filename)))
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return nil
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}
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func postLogin(c *gin.Context, config *Config) error {
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err := c.Request.ParseForm()
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if err != nil {
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return err
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}
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token, err := getToken(config, c.PostForm("password"))
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if err != nil {
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return err
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}
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c.JSON(http.StatusOK, token)
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return nil
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}
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func getToken(config *Config, password string) ([]byte, error) {
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if password != config.Password {
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return nil, fmt.Errorf("Wrong password!")
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}
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/* Set token claims */
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claims := make(map[string]interface{})
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// Token expire time
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claims["exp"] = time.Now().Add(time.Minute * time.Duration(config.JWTExpireTime)).Unix()
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/* Create the token */
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims(claims))
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/* Sign the token with our secret */
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tokenString, err := token.SignedString([]byte(config.JWTSigningKey))
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if err != nil {
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return nil, err
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}
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return []byte(tokenString), nil
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}
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// API outline
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//
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// POST /task content: url=https://foo.org start a new download task
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// GET /task/:id get the status for the task
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// GET /task/:id/download download the file resulted from the task execution
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func main() {
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r := gin.Default()
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r.Use(cors.New(cors.Config{
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AllowOrigins: []string{
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"http://localhost:8080",
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"http://localhost:5000",
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"https://yt-dls.andreafazzi.eu",
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},
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AllowCredentials: true,
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AllowHeaders: []string{"*"},
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}))
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config := new(Config)
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err := ReadConfig("config.yaml", config)
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if err != nil {
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panic(err)
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}
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r.Use(gin.CustomRecovery(func(c *gin.Context, recovered interface{}) {
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if err, ok := recovered.(string); ok {
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c.String(http.StatusInternalServerError, fmt.Sprintf("error: %s", err))
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}
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c.AbortWithStatus(http.StatusInternalServerError)
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}))
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r.GET("/data/:id", func(c *gin.Context) {
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if err := data(c, c.Param("id")); err != nil {
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panic(err)
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}
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})
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r.POST("/task", createTask)
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r.GET("/task/:id", func(c *gin.Context) {
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if err := getTask(c, c.Param("id")); err != nil {
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panic(err)
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}
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})
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r.POST("/login", func(c *gin.Context) {
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if err := postLogin(c, config); err != nil {
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panic(err)
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}
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})
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r.Run()
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}
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