Partial implementation of github trending RESTful API

rest-api.go

package main

import (
    "encoding/json"
    "github.com/gorilla/mux"
    "log"
    "net/http"
)

type Repository struct {
    ID        string   `json:"id,omitempty"`
    stars        int   `json:"stars,omitempty"`
    forks        int   `json:"forks,omitempty"`
}

var trendingRepos []Repository

// Display all trending repositories. TODO: Add parameters for filter "s" and maximum number of results "limit"
func GetTrending(w http.ResponseWriter, r *http.Request) {
    json.NewEncoder(w).Encode(trendingRepos)
}

func main() {
    router := mux.NewRouter()

    // TODO: Replace with scraping code to get data from github. Maybe github also returns these data as JSON. I could find that out with the Firefox Web Developer Tools.
    trendingRepos = append(trendingRepos, Repository{ID: "microsoft/dotnetreferencesource", stars: 100, forks: 123})
    trendingRepos = append(trendingRepos, Repository{ID: "llvm/clang", stars: 321, forks: 57})
    trendingRepos = append(trendingRepos, Repository{ID: "microsoft/code", stars: 999, forks: 666})

    router.HandleFunc("/trending", GetTrending).Methods("GET")
    // TODO: Add something like router.HandleFunc(...).Methods("GET").Queries("s", "{filterString}") to pass filterString to GetTrending function, ditto for limit parameter. 
    // Limit parameter can probably be specified as regex [0-9]+, which only allows positive integers. I don't think the server needs any additional error handling, although the scraper would need error handling (timeout, log message for connection failure or for invalid data from github, etc.)
    log.Fatal(http.ListenAndServe(":8000", router))
}