package web

import (
	"nickiel.net/recount_server/db"
	"nickiel.net/recount_server/web/templates"

	"html/template"
	"net/http"
	"strconv"

	"bytes"
	"context"

	"github.com/a-h/templ"
	"github.com/go-chi/chi/v5"
	"github.com/rs/zerolog"
	"github.com/rs/zerolog/log"
)

type IndexTemplateModel struct {
	InnerHtml          template.HTML
	ActivePage         string
	NewTransactionPane template.HTML
	QuickAccessPane    template.HTML
}

const TemplateDir = "./web/templates/"

func SetLogLevel(level zerolog.Level) {
	zerolog.SetGlobalLevel(level)
}

func WebRouter() http.Handler {
	r := chi.NewRouter()
	r.Get("/", getDashboard)
	r.Get("/transactions", getTransactionsPage)
    r.Post("/submitTransaction", HandleNewTransaction);

	r.Get("/components/account_summaries", GetAccountSummaries)

	r.Get("/components/data/transaction_table_rows", GetTransactionsRows)
	r.Get("/components/data/expenditure_chart", GetExpenditureChart)
	r.Get("/components/data/account_summary/{accountID}", GetAccountSummaryChart)
	r.Get("/components/data/transaction_quick_access", GetTransactionQuickAccessEntries)

	r.Handle("/static/*", http.StripPrefix("/static/", http.FileServer(http.Dir("web/static/"))))
	return r
}

//for name, values := range req.Header {
// Loop over all values for the name.
//    for _, value := range values {
//        log.Debug().Msg(name + " " + value);
//    }
// }

func renderFullPage(w http.ResponseWriter, c templ.Component, pageName string) {
	var main_component bytes.Buffer

	// Render the provided templ component
	err := c.Render(context.Background(), &main_component)
	if err != nil {
		log.Fatal().Err(err).Msg("Fatal error reading hello template")
	}

	// get the index template
	index, err := template.ParseFiles(TemplateDir + "index.html")
	if err != nil {
		log.Fatal().
			Err(err).
			Msg("Fatal error reading index template")
	}

	var new_tp bytes.Buffer

	quick_trans_types, err := db.GetTransPaneEntries(0)
	if err != nil {
		log.Fatal().Err(err).Msg("Could not get transaction pane entries for user")
	}
	user_acnts, err := db.GetUserAccounts(0)
	if err != nil {
		log.Fatal().Err(err).Msg("Could not get accounts for user")
	}
	user_bkts, err := db.GetUserBuckets(0)
	if err != nil {
		log.Fatal().Err(err).Msg("Could not get buckets for user")
	}

	err = templates.NewTransactionPane(&quick_trans_types, &user_acnts, &user_bkts).Render(context.Background(), &new_tp)
	if err != nil {
		log.Fatal().Err(err).Msg("Could not render new transaction pane for index")
	}

	var quick_ap bytes.Buffer
	err = templates.QuickAccessPane().Render(context.Background(), &quick_ap)
	if err != nil {
		log.Fatal().Err(err).Msg("Could not render quick access pane for index")
	}

	// Inject the templ component html into the index template
	err = index.Execute(w,
		IndexTemplateModel{
			InnerHtml:          template.HTML(main_component.String()),
			ActivePage:         pageName,
			NewTransactionPane: template.HTML(new_tp.String()),
			QuickAccessPane:    template.HTML(quick_ap.String()),
		})
	if err != nil {
		log.Fatal().Err(err).Msg("Fatal error reading hello template")
	}
}

func getDashboard(w http.ResponseWriter, req *http.Request) {
	component := templates.Dashboard()

	_, ok := req.Header["Hx-Request"]
	if ok {
		err := component.Render(context.Background(), w)
		if err != nil {
			log.Fatal().Err(err).Msg("Couldn't render dashboard templ template")
		}
	} else {
		renderFullPage(w, component, "Dashboard")
	}
}

func getTransactionsPage(w http.ResponseWriter, req *http.Request) {
	accounts := make([]string, 10)
	for i := 0; i < 10; i++ {
		accounts[i] = strconv.Itoa(i) + " Account"
	}

	component := templates.TransactionsPage(1, &accounts)
	_, ok := req.Header["Hx-Request"]
	if ok {
		err := component.Render(context.Background(), w)
		if err != nil {
			log.Fatal().Err(err).Msg("Couldn't render transactions templ template")
		}
	} else {
		renderFullPage(w, component, "Transactions")
	}
}