meifamily/ptt-alertor

package controllers

import (
    "fmt"
    "net/http"
    "sort"

    "github.com/Ptt-Alertor/ptt-alertor/models"
    "github.com/Ptt-Alertor/ptt-alertor/models/author"
    "github.com/julienschmidt/httprouter"
)

func AuthorBoards(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
    type authorCount struct {
        board string
        count int
    }
    authorCounts := make([]authorCount, 0)
    boards := models.Board().List()
    for _, name := range boards {
        cnt := len(author.Subscribers(name))
        ac := authorCount{board: name, count: cnt}
        authorCounts = append(authorCounts, ac)
    }
    sort.Slice(authorCounts, func(i, j int) bool {
        return authorCounts[i].count > authorCounts[j].count
    })
    for _, ac := range authorCounts {
        fmt.Fprintf(w, "%s: %d\n", ac.board, ac.count)
    }
}