package pkg

import (
	"context"
	"net/http"
)

type ContactEntry struct {
	Name  string
	Email string
	Phone string
}

type ContactsIndexPage struct {
	Title    string
	Contacts []*ContactEntry
}

func ContactsHandler() http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		conn := getConn(r)
		company := getCompany(r)
		if r.Method == "POST" {
			r.ParseForm()
			page := &NewContactPage{
				BusinessName: r.FormValue("business_name"),
				VATIN:        r.FormValue("vatin"),
				TradeName:    r.FormValue("trade_name"),
				Phone:        r.FormValue("phone"),
				Email:        r.FormValue("email"),
				Web:          r.FormValue("web"),
				Address:      r.FormValue("address"),
				City:         r.FormValue("city"),
				Province:     r.FormValue("province"),
				PostalCode:   r.FormValue("postal_code"),
				CountryCode:  r.FormValue("country"),
			}
			conn.MustExec(r.Context(), "insert into contact (company_id, business_name, vatin, trade_name, phone, email, web, address, province, city, postal_code, country_code) values ($1, $2, ($12 || $3)::vatin, $4, parse_packed_phone_number($5, $12), $6, $7, $8, $9, $10, $11, $12)", company.Id, page.BusinessName, page.VATIN, page.TradeName, page.Phone, page.Email, page.Web, page.Address, page.City, page.Province, page.PostalCode, page.CountryCode)
			http.Redirect(w, r, "/company/"+company.Slug+"/contacts", http.StatusSeeOther)
		} else {
			locale := getLocale(r)
			page := &ContactsIndexPage{
				Title:    pgettext("title", "Customers", locale),
				Contacts: mustGetContactEntries(r.Context(), conn, company),
			}
			mustRenderAppTemplate(w, r, "contacts-index.gohtml", page)
		}
	})
}

func mustGetContactEntries(ctx context.Context, conn *Conn, company *Company) []*ContactEntry {
	rows, err := conn.Query(ctx, "select business_name, email, phone from contact where company_id = $1 order by business_name", company.Id)
	if err != nil {
		panic(err)
	}
	defer rows.Close()

	var entries []*ContactEntry
	for rows.Next() {
		entry := &ContactEntry{}
		err = rows.Scan(&entry.Name, &entry.Email, &entry.Phone)
		if err != nil {
			panic(err)
		}
		entries = append(entries, entry)
	}
	if rows.Err() != nil {
		panic(rows.Err())
	}

	return entries
}

type NewContactPage struct {
	Title        string
	BusinessName string
	VATIN        string
	TradeName    string
	Phone        string
	Email        string
	Web          string
	Address      string
	City         string
	Province     string
	PostalCode   string
	CountryCode  string
	Countries    []CountryOption
}

func NewContactHandler() http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		locale := getLocale(r)
		conn := getConn(r)
		page := &NewContactPage{
			Title:       pgettext("title", "New Contact", locale),
			CountryCode: "ES",
			Countries:   mustGetCountryOptions(r.Context(), conn, locale),
		}
		mustRenderAppTemplate(w, r, "contacts-new.gohtml", page)
	})
}