package handlers

import (
	"html/template"
	"log/slog"
	"net/http"
	"strings"
	"time"

	"github.com/maximotejeda/us_dop_api/handlers/api"
	"github.com/maximotejeda/us_dop_api/ports"
	"github.com/maximotejeda/us_dop_db/db"
)

var (
	templ template.Template
)

// Mux will mix and match all sub routes
type Root struct {
	http.ServeMux
	db        *db.DB
	log       *slog.Logger
	dolar     ports.DolarService
	templates *template.Template
}

func NewRoot(dbe *db.DB, dolar ports.DolarService, log *slog.Logger, files []string) *Root {
	funcMap := template.FuncMap{
		"add":     add[float64],
		"div":     div,
		"mult":    mult[float64],
		"fdate":   fdate,
		"replace": replace,
	}
	templ = *template.Must(template.New("").Funcs(funcMap).ParseFiles(files...))
	r := Root{
		log:       log,
		dolar:     dolar,
		templates: &templ,
	}

	r.HandleFunc("/{$}", func(w http.ResponseWriter, r *http.Request) {
		templ.ExecuteTemplate(w, "index", nil)
		//w.Write([]byte("{'status': 'ok'}"))
	})
	inst := api.NewApiHandler(dbe, dolar, log, templ)
	r.Handle("GET /api/{inst}/", inst)
	r.Handle("POST /api/instituciones/history", inst)
	r.Handle("GET /api/latest/{inst}", inst)
	r.Handle("POST /api/control/", inst)
	r.HandleFunc("/api/{$}", http.NotFound)

	// telegram
	r.HandleFunc("/telegram/{$}", func(w http.ResponseWriter, r *http.Request) {
		templ.ExecuteTemplate(w, "index", nil)
		//w.Write([]byte("{'status': 'ok'}"))
	})

	return &r
}

func add[v float64 | int](a, b v) v {
	return a + b
}

func div(a float64, b int) float64 {
	if a == 0 || b == 0 {
		return 0
	}
	return a / float64(b)
}

func mult[v float64 | int](a, b v) v {
	return a * b
}

func fdate(t time.Time) string {

	return t.Format("15 02-01-06")
}

// replace
// replace string
func replace(rep, torep, original string) string {
	return strings.ReplaceAll(original, rep, torep)
}