package component

import (
	"errors"
	"forge.cadoles.com/wpetit/clearcase/internal/http/form"
)

templ FormField(form *form.Form, id string, name string, label string) {
	{{ field := form.Field(name) }}
	if field != nil {
		<div class="field">
			{{ err, hasErr := form.Error(name) }}
			<label class={ "label", templ.KV("has-text-danger", hasErr) } for={ id }>{ label }</label>
			<div class="control">
				<input class={ "input", templ.KV("is-danger", hasErr) } id={ id } name={ field.Name() } { field.Attrs()... }/>
				if hasErr {
					<p class="help is-danger">{ err.Message() }</p>
				}
			</div>
		</div>
	}
}

templ FormTextarea(form *form.Form, id string, name string, label string) {
	{{ field := form.Field(name) }}
	if field != nil {
		<div class="field">
			<label class="label" for={ id }>{ label }</label>
			<div class="control">
				{{ err, hasErr := form.Error(name) }}
				{{ value, hasValue := field.Get("value") }}
				<textarea class={ "textarea", templ.KV("is-danger", hasErr) } id={ id } name={ field.Name() } { field.Attrs()... }>
					if hasValue {
						{ value.(string) }
					}
				</textarea>
				if hasErr {
					<p class="help is-danger">{ err.Message() }</p>
				}
			</div>
		</div>
	}
}

templ FormSelect(form *form.Form, id string, name string, label string, kvOptions ...string) {
	{{ field := form.Field(name) }}
	if field != nil {
		<div class="field">
			<label class="label" for={ id }>{ label }</label>
			<div class="control">
				{{ err, hasErr := form.Error(name) }}
				<div class="select is-fullwidth">
					<select id={ id } name={ field.Name() } { field.Attrs()... }>
						{{ options := keyValuesToOptions(kvOptions) }}
						for _, o := range options {
							<option value={ o.Value }>{ o.Label }</option>
						}
					</select>
				</div>
				if hasErr {
					<p class="help is-danger">{ err.Message() }</p>
				}
			</div>
		</div>
	}
}

type SelectOption struct {
	Value string
	Label string
}

func keyValuesToOptions(kv []string) []SelectOption {
	if len(kv)%2 != 0 {
		panic(errors.New("expected pair number of key/values"))
	}

	options := make([]SelectOption, 0)

	var key string
	for idx := range kv {
		if idx%2 == 0 {
			key = kv[idx]
			continue
		}

		options = append(options, SelectOption{
			Value: kv[idx],
			Label: key,
		})
	}

	return options
}