303 lines
8.2 KiB
Go

package editform
import (
"bytes"
"fmt"
"reflect"
"strconv"
"strings"
"github.com/aerogo/api"
"github.com/animenotifier/arn"
"github.com/animenotifier/notify.moe/components"
"github.com/animenotifier/notify.moe/utils"
)
// Render renders a generic editing UI for any kind of datatype that has an ID.
func Render(obj interface{}, title string, user *arn.User) string {
t := reflect.TypeOf(obj).Elem()
v := reflect.ValueOf(obj).Elem()
id := findMainID(t, v)
lowerCaseTypeName := strings.ToLower(t.Name())
endpoint := `/api/` + lowerCaseTypeName + `/` + id.String()
var b bytes.Buffer
b.WriteString(`<div class="widget-form">`)
b.WriteString(`<div class="widget" data-api="` + endpoint + `">`)
// Title
b.WriteString(`<h1 class="mountable">`)
b.WriteString(title)
b.WriteString(`</h1>`)
// Render the object with its fields
RenderObject(&b, obj, "")
// Additional buttons when logged in
if user != nil {
b.WriteString(`<div class="buttons">`)
// Publish button
_, ok := t.FieldByName("IsDraft")
if ok {
isDraft := v.FieldByName("IsDraft").Interface().(bool)
if isDraft {
b.WriteString(`<div class="buttons"><button class="mountable action" data-action="publish" data-trigger="click">` + utils.Icon("share-alt") + `Publish</button></div>`)
}
}
// Delete button
_, isDeletable := obj.(api.Deletable)
if isDeletable && (user.Role == "editor" || user.Role == "admin") {
returnPath := ""
switch lowerCaseTypeName {
case "anime":
returnPath = "/explore"
case "company":
returnPath = "/companies"
default:
returnPath = "/" + lowerCaseTypeName + "s"
}
b.WriteString(`<button class="mountable action" data-action="deleteObject" data-trigger="click" data-return-path="` + returnPath + `" data-confirm-type="` + lowerCaseTypeName + `">` + utils.Icon("trash") + `Delete</button>`)
}
b.WriteString(`</div>`)
}
b.WriteString("</div>")
b.WriteString("</div>")
return b.String()
}
// RenderObject renders the UI for the object into the bytes buffer and appends an ID prefix for all API requests.
// The ID prefix should either be empty or end with a dot character.
func RenderObject(b *bytes.Buffer, obj interface{}, idPrefix string) {
t := reflect.TypeOf(obj)
v := reflect.ValueOf(obj)
if t.Kind() == reflect.Ptr {
t = t.Elem()
v = v.Elem()
}
// Fields
for i := 0; i < t.NumField(); i++ {
field := t.Field(i)
RenderField(b, &v, field, idPrefix)
}
}
// RenderField ...
func RenderField(b *bytes.Buffer, v *reflect.Value, field reflect.StructField, idPrefix string) {
fieldValue := reflect.Indirect(v.FieldByName(field.Name))
// Embedded fields
if field.Anonymous {
RenderObject(b, fieldValue.Interface(), idPrefix)
return
}
if field.Tag.Get("editable") != "true" {
return
}
b.WriteString("<div class='mountable'>")
defer b.WriteString("</div>")
fieldType := field.Type.String()
// String
if fieldType == "string" {
renderStringField(b, v, field, idPrefix, fieldValue)
return
}
// Int
if fieldType == "int" {
b.WriteString(components.InputNumber(idPrefix+field.Name, float64(fieldValue.Int()), field.Name, field.Tag.Get("tooltip"), "", "", "1"))
return
}
// Float
if fieldType == "float64" {
b.WriteString(components.InputNumber(idPrefix+field.Name, fieldValue.Float(), field.Name, field.Tag.Get("tooltip"), "", "", ""))
return
}
// Bool
if fieldType == "bool" {
if field.Name == "IsDraft" {
return
}
b.WriteString(components.InputBool(idPrefix+field.Name, fieldValue.Bool(), field.Name, field.Tag.Get("tooltip")))
return
}
// Array of strings
if fieldType == "[]string" {
b.WriteString(components.InputTags(idPrefix+field.Name, fieldValue.Interface().([]string), field.Name, field.Tag.Get("tooltip")))
return
}
// Any kind of array
if strings.HasPrefix(fieldType, "[]") {
renderSliceField(b, v, field, idPrefix, fieldType, fieldValue)
return
}
// Any custom field type will be recursively rendered via another RenderObject call
b.WriteString(`<div class="widget-section">`)
b.WriteString(`<h3 class="widget-title">` + field.Name + `</h3>`)
// Indent the fields
b.WriteString(`<div class="indent">`)
RenderObject(b, fieldValue.Interface(), field.Name+".")
b.WriteString(`</div>`)
b.WriteString(`</div>`)
}
// String field
func renderStringField(b *bytes.Buffer, v *reflect.Value, field reflect.StructField, idPrefix string, fieldValue reflect.Value) {
idType := field.Tag.Get("idType")
// Try to infer the ID type by the field name
if idType == "" {
switch field.Name {
case "AnimeID":
idType = "Anime"
case "CharacterID":
idType = "Character"
}
}
showPreview := idType != "" && fieldValue.String() != ""
if showPreview {
b.WriteString("<div class='widget-section-with-preview'>")
}
// Input field
if field.Tag.Get("datalist") != "" {
dataList := field.Tag.Get("datalist")
values := arn.DataLists[dataList]
b.WriteString(components.InputSelection(idPrefix+field.Name, fieldValue.String(), field.Name, field.Tag.Get("tooltip"), values))
} else if field.Tag.Get("type") == "textarea" {
b.WriteString(components.InputTextArea(idPrefix+field.Name, fieldValue.String(), field.Name, field.Tag.Get("tooltip")))
} else if field.Tag.Get("type") == "upload" {
endpoint := field.Tag.Get("endpoint")
id := v.FieldByName("ID").String()
endpoint = strings.Replace(endpoint, ":id", id, 1)
b.WriteString(components.InputFileUpload(idPrefix+field.Name, field.Name, field.Tag.Get("filetype"), endpoint))
} else {
b.WriteString(components.InputText(idPrefix+field.Name, fieldValue.String(), field.Name, field.Tag.Get("tooltip")))
}
if showPreview {
b.WriteString("<div class='widget-section-preview'>")
}
// Preview
switch idType {
case "Anime":
animeID := fieldValue.String()
anime, err := arn.GetAnime(animeID)
if err == nil {
b.WriteString(components.EditFormImagePreview(anime.Link(), anime.ImageLink("small"), true))
}
case "Character":
characterID := fieldValue.String()
character, err := arn.GetCharacter(characterID)
if err == nil {
b.WriteString(components.EditFormImagePreview(character.Link(), character.ImageLink("medium"), false))
}
case "":
break
default:
fmt.Println("Error: Unknown idType tag: " + idType)
}
// Close preview tags
if showPreview {
b.WriteString("</div></div>")
}
}
// Slice field
func renderSliceField(b *bytes.Buffer, v *reflect.Value, field reflect.StructField, idPrefix string, fieldType string, fieldValue reflect.Value) {
b.WriteString(`<div class="widget-section">`)
b.WriteString(`<h3 class="widget-title">`)
b.WriteString(field.Name)
b.WriteString(`</h3>`)
for sliceIndex := 0; sliceIndex < fieldValue.Len(); sliceIndex++ {
b.WriteString(`<div class="widget-section">`)
b.WriteString(`<div class="widget-title">`)
// Title
b.WriteString(strconv.Itoa(sliceIndex+1) + ". " + field.Name)
b.WriteString(`<div class="spacer"></div>`)
// Remove button
b.WriteString(`<button class="action" title="Delete this ` + field.Name + `" data-action="arrayRemove" data-trigger="click" data-field="` + field.Name + `" data-index="`)
b.WriteString(strconv.Itoa(sliceIndex))
b.WriteString(`">` + utils.RawIcon("trash") + `</button>`)
b.WriteString(`</div>`)
arrayObj := fieldValue.Index(sliceIndex).Interface()
arrayIDPrefix := fmt.Sprintf("%s[%d].", field.Name, sliceIndex)
RenderObject(b, arrayObj, arrayIDPrefix)
// Preview
// elementValue := fieldValue.Index(sliceIndex)
// RenderArrayElement(b, &elementValue)
if fieldType == "[]*arn.ExternalMedia" {
b.WriteString(components.ExternalMedia(fieldValue.Index(sliceIndex).Interface().(*arn.ExternalMedia)))
}
b.WriteString(`</div>`)
}
b.WriteString(`<div class="buttons">`)
b.WriteString(`<button class="action" data-action="arrayAppend" data-trigger="click" data-field="` + field.Name + `">` + utils.Icon("plus") + `Add ` + field.Name + `</button>`)
b.WriteString(`</div>`)
b.WriteString(`</div>`)
}
// findMainID finds the main ID of the object.
func findMainID(t reflect.Type, v reflect.Value) reflect.Value {
idField := v.FieldByName("ID")
if idField.IsValid() {
return reflect.Indirect(idField)
}
for i := 0; i < t.NumField(); i++ {
field := t.Field(i)
if field.Tag.Get("mainID") == "true" {
return reflect.Indirect(v.Field(i))
}
}
panic("Type " + t.Name() + " doesn't have a main ID!")
}