package main

import (
	//"fmt"
	"crowsnest/internal/data"
	"crowsnest/internal/model"
	"fmt"
	"html/template"
	"net/http"
	"strings"
)

type articleDateOrder struct {}
func (ord articleDateOrder) Weight(a *model.Article) int {
    return int(a.PublishDate.Unix())
}

type articleTermFrequency struct {
    terms []string
}
func (ord articleTermFrequency) Weight(a *model.Article) int {
    score := 0
    for _, term := range ord.terms {
        term = strings.TrimSpace(term)
        if term == "" { continue }
        score += strings.Count(a.Content, term)
    }
    return score
}


func index(w http.ResponseWriter, req *http.Request) {
    fds, _ := data.NewFileDatastore("./persistence/spiegel100.json")
    
    repo, _ := data.NewDefaultRepository[*model.Article](fds, "article")
    articles, _ := repo.GetByCriteria(articleDateOrder{})

    t := template.Must(template.ParseFiles("templates/article.html", "templates/layout.html"))
    _ = t.ExecuteTemplate(w, "base", articles[:10])
}

func search(w http.ResponseWriter, req *http.Request) {
    // Parse the form data
    err := req.ParseForm()
    if err != nil {
        http.Error(w, "Unable to parse form", http.StatusBadRequest)
        return
    }
    searchTerms := strings.Split(req.FormValue("search"), " ")


    fds, _ := data.NewFileDatastore("./persistence/spiegel100.json")
    
    repo, _ := data.NewDefaultRepository[*model.Article](fds, "article")
    articles, _ := repo.GetByCriteria(articleTermFrequency{ terms: searchTerms })

    t := template.Must(template.ParseFiles("templates/article.html", "templates/layout.html"))
    _ = t.ExecuteTemplate(w, "base", articles)
}

func main() {
    // routes
    http.HandleFunc("/", index)
    http.HandleFunc("/search", search)

    // serve files from the "static" directory
	fs := http.FileServer(http.Dir("./static"))
	http.Handle("/static", http.StripPrefix("/", fs))

    t := template.Must(template.ParseFiles("templates/article.html"))
    fmt.Println(t)

    // start server
    http.ListenAndServe(":8080", nil)
}