package main

import (
	"crowsnest/internal/app"
	"crowsnest/internal/crawler"
	"crowsnest/internal/middleware"
	"crowsnest/internal/model"
	"crowsnest/internal/model/database"
	"crowsnest/internal/util"
	"log"
	"net/http"

	_ "github.com/lib/pq"
)

func main() {
	db, err := database.DbConnection()
	if err != nil {
		log.Fatal("failed to connect to database due to", err.Error())
	}

    // summarize documents
    documents := &database.DocumentRepository{DB: db}

    go documents.Map(func(doc *model.Document) *model.Document {
        if doc.Summary == "" {
            summaryText, err := util.Summarize(doc.Content)
            if err == nil {
                doc.Summary = summaryText
                return doc
            }
            log.Println(err.Error())
        }
        return doc
    })

	// run web crawlers
    articles := &database.ArticleRepository{DB: db}
	crawler := crawler.CrawlerFacade{}
	crawler.Init()

	crawler.SubscribeToSpiegelFeed(func(a *model.Article) {
        articles.Insert(a)
	})
	crawler.SubscribeToZeitFeed(func(a *model.Article) {
        articles.Insert(a)
	})

	// define app
	webapp := app.NewApp(db)

	// create middle
	stack := middleware.CreateStack(
		middleware.Logging,
	)

	// start web server
	server := http.Server{
		Addr:    ":8080",
		Handler: stack(webapp.Routes()),
	}

	log.Println("server started, listening on :8080")
	server.ListenAndServe()
}