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package main
import (
"log"
"encoding/json"
"net/http"
"time"
)
type VideoDetails struct {
Channel string `json:"channel"`
DatePublished time.Time `json:"datePublished"`
Description string `json:"description"`
NumComments int `json:"comments"`
NumLikes int `json:"likes"`
NumViews int `json:"views"`
Tags []string `json:"tags"`
}
type Comment struct {
Author string `json:"a"`
Body string `json:"b"`
DatePublished time.Time `json:"p"`
DateUpdated time.Time `json:"u"`
Likes int `json:"l"`
Replies []*Comment `json:"r,omitempty"`
}
type APISource interface {
getDetails(id string) (VideoDetails, error)
getComments(id string) ([]Comment, error)
}
func apiDataHandler[T any](f func(id string) (T, error)) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
videoID := r.URL.Query().Get("id")
if videoID == "" {
msg := "Missing ?id=VIDEO_ID parameter"
http.Error(w, msg, http.StatusBadRequest)
return
}
data, err := f(videoID)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
log.Println(err.Error())
return
}
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(data)
}
}
func registerRoutesAPI(mux *http.ServeMux, api APISource) {
mux.HandleFunc("/api/details", apiDataHandler(api.getDetails))
mux.HandleFunc("/api/comments", apiDataHandler(api.getComments))
}
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