300 lines
8.3 KiB
Go
300 lines
8.3 KiB
Go
package pkg
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import (
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"context"
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"errors"
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"github.com/julienschmidt/httprouter"
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"html/template"
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"net/http"
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"net/url"
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"strconv"
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)
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const (
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ContextCompanyKey = "numerus-company"
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)
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type Company struct {
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Id int
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CurrencySymbol string
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DecimalDigits int
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Slug string
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}
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func CompanyHandler(next http.Handler) httprouter.Handle {
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return func(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
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company := &Company{
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Slug: params[0].Value,
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}
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conn := getConn(r)
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err := conn.QueryRow(r.Context(), "select company_id, currency_symbol, decimal_digits from company join currency using (currency_code) where slug = $1", company.Slug).Scan(&company.Id, &company.CurrencySymbol, &company.DecimalDigits)
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if err != nil {
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http.NotFound(w, r)
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return
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}
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ctx := context.WithValue(r.Context(), ContextCompanyKey, company)
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r = r.WithContext(ctx)
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r2 := new(http.Request)
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*r2 = *r
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r2.URL = new(url.URL)
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*r2.URL = *r.URL
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r2.URL.Path = params[1].Value
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next.ServeHTTP(w, r2)
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}
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}
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func (c Company) MinCents() float64 {
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var r float64
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r = 1
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for i := 0; i < c.DecimalDigits; i++ {
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r /= 10.0
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}
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return r
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}
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func getCompany(r *http.Request) *Company {
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company := r.Context().Value(ContextCompanyKey)
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if company == nil {
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return nil
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}
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return company.(*Company)
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}
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type CurrencyOption struct {
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Code string
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Symbol string
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}
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type CountryOption struct {
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Code string
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Name string
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}
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type Tax struct {
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Id int
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Name string
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Rate int
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}
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type taxDetailsForm struct {
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*contactForm
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Currency *SelectField
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}
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func newTaxDetailsForm(ctx context.Context, conn *Conn, locale *Locale) *taxDetailsForm {
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return &taxDetailsForm{
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contactForm: newContactForm(ctx, conn, locale),
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Currency: &SelectField{
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Name: "currency",
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Label: pgettext("input", "Currency", locale),
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Options: MustGetOptions(ctx, conn, "select currency_code, currency_symbol from currency order by currency_code"),
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Required: true,
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Selected: []string{"EUR"},
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},
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}
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}
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func (form *taxDetailsForm) Parse(r *http.Request) error {
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if err := form.contactForm.Parse(r); err != nil {
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return err
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}
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form.Currency.FillValue(r)
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return nil
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}
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func (form *taxDetailsForm) Validate(ctx context.Context, conn *Conn) bool {
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validator := newFormValidator()
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validator.CheckValidSelectOption(form.Currency, gettext("Selected currency is not valid.", form.locale))
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return form.contactForm.Validate(ctx, conn) && validator.AllOK()
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}
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func (form *taxDetailsForm) mustFillFromDatabase(ctx context.Context, conn *Conn, company *Company) *taxDetailsForm {
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err := conn.QueryRow(ctx, "select business_name, substr(vatin::text, 3), trade_name, phone, email, web, address, city, province, postal_code, country_code, currency_code from company where company_id = $1", company.Id).Scan(form.BusinessName, form.VATIN, form.TradeName, form.Phone, form.Email, form.Web, form.Address, form.City, form.Province, form.PostalCode, form.Country, form.Currency)
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if err != nil {
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panic(err)
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}
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return form
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}
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type TaxDetailsPage struct {
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DetailsForm *taxDetailsForm
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NewTaxForm *taxForm
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Taxes []*Tax
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}
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func GetCompanyTaxDetailsForm(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
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mustRenderTaxDetailsForm(w, r, newTaxDetailsFormFromDatabase(r))
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}
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func newTaxDetailsFormFromDatabase(r *http.Request) *taxDetailsForm {
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locale := getLocale(r)
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conn := getConn(r)
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form := newTaxDetailsForm(r.Context(), conn, locale)
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company := mustGetCompany(r)
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form.mustFillFromDatabase(r.Context(), conn, company)
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return form
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}
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func HandleCompanyTaxDetailsForm(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
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locale := getLocale(r)
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conn := getConn(r)
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form := newTaxDetailsForm(r.Context(), conn, locale)
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if err := form.Parse(r); err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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if err := verifyCsrfTokenValid(r); err != nil {
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http.Error(w, err.Error(), http.StatusForbidden)
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return
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}
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if ok := form.Validate(r.Context(), conn); !ok {
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w.WriteHeader(http.StatusUnprocessableEntity)
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mustRenderTaxDetailsForm(w, r, form)
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return
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}
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company := mustGetCompany(r)
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conn.MustExec(r.Context(), "update company set business_name = $1, vatin = ($11 || $2)::vatin, trade_name = $3, phone = parse_packed_phone_number($4, $11), email = $5, web = $6, address = $7, city = $8, province = $9, postal_code = $10, country_code = $11, currency_code = $12 where company_id = $13", form.BusinessName, form.VATIN, form.TradeName, form.Phone, form.Email, form.Web, form.Address, form.City, form.Province, form.PostalCode, form.Country, form.Currency, company.Id)
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http.Redirect(w, r, companyURI(company, "/tax-details"), http.StatusSeeOther)
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return
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}
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func mustRenderTaxDetailsForm(w http.ResponseWriter, r *http.Request, form *taxDetailsForm) {
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locale := getLocale(r)
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page := &TaxDetailsPage{
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DetailsForm: form,
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NewTaxForm: newTaxForm(locale),
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}
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mustRenderTexDetailsPage(w, r, page)
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}
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func mustRenderTaxForm(w http.ResponseWriter, r *http.Request, form *taxForm) {
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page := &TaxDetailsPage{
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DetailsForm: newTaxDetailsFormFromDatabase(r),
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NewTaxForm: form,
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}
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mustRenderTexDetailsPage(w, r, page)
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}
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func mustRenderTexDetailsPage(w http.ResponseWriter, r *http.Request, page *TaxDetailsPage) {
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conn := getConn(r)
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company := mustGetCompany(r)
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page.Taxes = mustGetTaxes(r.Context(), conn, company)
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mustRenderAppTemplate(w, r, "tax-details.gohtml", page)
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}
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func mustGetCompany(r *http.Request) *Company {
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company := getCompany(r)
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if company == nil {
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panic(errors.New("company: required but not found"))
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}
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return company
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}
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func mustGetTaxes(ctx context.Context, conn *Conn, company *Company) []*Tax {
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rows, err := conn.Query(ctx, "select tax_id, name, (rate * 100)::integer from tax where company_id = $1 order by rate, name", company.Id)
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if err != nil {
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panic(err)
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}
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defer rows.Close()
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var taxes []*Tax
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for rows.Next() {
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tax := &Tax{}
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err = rows.Scan(&tax.Id, &tax.Name, &tax.Rate)
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if err != nil {
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panic(err)
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}
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taxes = append(taxes, tax)
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}
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if rows.Err() != nil {
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panic(rows.Err())
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}
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return taxes
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}
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type taxForm struct {
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locale *Locale
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Name *InputField
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Rate *InputField
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}
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func newTaxForm(locale *Locale) *taxForm {
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return &taxForm{
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locale: locale,
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Name: &InputField{
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Name: "tax_name",
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Label: pgettext("input", "Tax name", locale),
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Type: "text",
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Required: true,
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},
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Rate: &InputField{
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Name: "tax_rate",
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Label: pgettext("input", "Rate (%)", locale),
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Type: "number",
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Required: true,
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Attributes: []template.HTMLAttr{
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"min=-99",
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"max=99",
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},
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},
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}
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}
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func (form *taxForm) Parse(r *http.Request) error {
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if err := r.ParseForm(); err != nil {
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return err
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}
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form.Name.FillValue(r)
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form.Rate.FillValue(r)
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return nil
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}
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func (form *taxForm) Validate() bool {
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validator := newFormValidator()
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validator.CheckRequiredInput(form.Name, gettext("Tax name can not be empty.", form.locale))
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if validator.CheckRequiredInput(form.Rate, gettext("Tax rate can not be empty.", form.locale)) {
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validator.CheckValidInteger(form.Rate, -99, 99, gettext("Tax rate must be an integer between -99 and 99.", form.locale))
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}
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return validator.AllOK()
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}
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func HandleDeleteCompanyTax(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
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taxId, err := strconv.Atoi(params[0].Value)
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if err != nil {
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http.NotFound(w, r)
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return
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}
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if err := verifyCsrfTokenValid(r); err != nil {
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http.Error(w, err.Error(), http.StatusForbidden)
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return
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}
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conn := getConn(r)
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conn.MustExec(r.Context(), "delete from tax where tax_id = $1", taxId)
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http.Redirect(w, r, companyURI(mustGetCompany(r), "/tax-details"), http.StatusSeeOther)
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}
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func HandleAddCompanyTax(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
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locale := getLocale(r)
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form := newTaxForm(locale)
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if err := form.Parse(r); err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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if err := verifyCsrfTokenValid(r); err != nil {
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http.Error(w, err.Error(), http.StatusForbidden)
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return
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}
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if !form.Validate() {
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w.WriteHeader(http.StatusUnprocessableEntity)
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mustRenderTaxForm(w, r, form)
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return
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}
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conn := getConn(r)
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company := mustGetCompany(r)
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conn.MustExec(r.Context(), "insert into tax (company_id, name, rate) values ($1, $2, $3 / 100::decimal)", company.Id, form.Name, form.Rate.Integer())
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http.Redirect(w, r, companyURI(company, "/tax-details"), http.StatusSeeOther)
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}
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