//go:build standalone

package checker

import (
	"errors"
	"net/http"
	"strconv"
	"strings"

	sdk "git.happydns.org/checker-sdk-go/checker"
)

// RenderForm exposes the run + admin options documented in Definition()
// so the standalone form stays in sync with the host-side documentation.
func (p *kerberosProvider) RenderForm() []sdk.CheckerOptionField {
	docs := p.Definition().Options
	fields := make([]sdk.CheckerOptionField, 0, len(docs.RunOpts)+len(docs.AdminOpts))
	fields = append(fields, docs.RunOpts...)
	fields = append(fields, docs.AdminOpts...)
	return fields
}

// ParseForm turns the submitted form into a CheckerOptions, using the
// documented field types to coerce values.
func (p *kerberosProvider) ParseForm(r *http.Request) (sdk.CheckerOptions, error) {
	opts := sdk.CheckerOptions{}
	for _, f := range p.RenderForm() {
		raw := r.FormValue(f.Id)
		if f.Type != "bool" {
			raw = strings.TrimSpace(raw)
		}
		if raw == "" {
			if f.Required {
				return nil, errors.New(f.Id + " is required")
			}
			continue
		}
		switch f.Type {
		case "bool":
			opts[f.Id] = raw == "true" || raw == "1" || raw == "on"
		case "number":
			if v, err := strconv.ParseFloat(raw, 64); err == nil {
				opts[f.Id] = v
			} else {
				opts[f.Id] = raw
			}
		default:
			opts[f.Id] = raw
		}
	}
	return opts, nil
}