import {
    SingleLineTextVariable,
    MultiLineTextVariable,
    WideSingleLineTextVariable,
    HtmlVariable,
    MaskedVariable,
    EmailVariable,
    UrlVariable,
    IpAddressVariable,
    RichTextLabelVariable,
    LabelVariable,
    // Choice Variables
    SelectBoxVariable,
    MultipleChoiceVariable,
    LookupSelectBoxVariable,
    LookupMultipleChoiceVariable,
    NumericScaleVariable,
    YesNoVariable,
    // Date/Time Variables
    DateVariable,
    DateTimeVariable,
    DurationVariable,
    // Reference Variables
    ReferenceVariable,
    RequestedForVariable,
    // Special Variables
    AttachmentVariable,
    ListCollectorVariable,
    UIPageVariable,
    // Layout Variables
    ContainerStartVariable,
    ContainerEndVariable,
    ContainerSplitVariable,
    BreakVariable,
    // Custom Variables
    CustomVariable,
    CustomWithLabelVariable,
    CheckboxVariable,
} from '@servicenow/sdk-core/runtime/service-catalog'

// Map variable type codes to their corresponding component classes
export const VARIABLE_TYPE_TO_NAME: Record<string, string> = {
    '1': YesNoVariable.name,
    '2': MultiLineTextVariable.name,
    '3': MultipleChoiceVariable.name,
    '4': NumericScaleVariable.name,
    '5': SelectBoxVariable.name,
    '6': SingleLineTextVariable.name,
    '7': CheckboxVariable.name,
    '8': ReferenceVariable.name,
    '9': DateVariable.name,
    '10': DateTimeVariable.name,
    '11': LabelVariable.name,
    '12': BreakVariable.name,
    '14': CustomVariable.name,
    '15': UIPageVariable.name,
    '16': WideSingleLineTextVariable.name,
    '17': CustomWithLabelVariable.name,
    '18': LookupSelectBoxVariable.name,
    '19': ContainerStartVariable.name,
    '20': ContainerEndVariable.name,
    '21': ListCollectorVariable.name,
    '22': LookupMultipleChoiceVariable.name,
    '23': HtmlVariable.name,
    '24': ContainerSplitVariable.name,
    '25': MaskedVariable.name,
    '26': EmailVariable.name,
    '27': UrlVariable.name,
    '28': IpAddressVariable.name,
    '29': DurationVariable.name,
    '31': RequestedForVariable.name,
    '32': RichTextLabelVariable.name,
    '33': AttachmentVariable.name,
}

// Reverse mapping from API name to type code
export const VARIABLE_TYPE_TO_API: Record<string, string> = Object.fromEntries(
    Object.entries(VARIABLE_TYPE_TO_NAME).map(([key, value]) => [value, key])
)

export const VARIABLE_NAME_TO_TYPE = Object.fromEntries(
    Object.entries(VARIABLE_TYPE_TO_NAME).map(([key, value]) => [value, key])
) as Record<keyof typeof VARIABLE_TYPE_TO_NAME, string>

/**
 * Gets the variable type code from its class name
 * @param className - The class name of the variable (e.g., 'ReferenceVariable')
 * @returns The corresponding type code or '6' (SingleLineText) as default
 */
export function getVariableTypeFromName(className: string): string {
    return VARIABLE_NAME_TO_TYPE[className] || '6' // Default to SingleLineText if not found
}

// Define the default template constant
export const DEFAULT_SAVE_SCRIPT = `/** This script is executed before the Record is generated
* \`current\`- GlideRecord produced by Record Producer
* Don't use \`current.update()\` or \`current.insert()\` as the record is generated by Record Producer
* Don't use \`current.setValue('sys_class_name', 'xxx')\` as this will trigger reparent flow and can cause data loss
* Avoid \`current.setAbortAction()\` and generate a separate record
* Use \`producer.var1\` to access variables
*/`

export const VariableTypeName = {
    YES_NO: YesNoVariable.name,
    MULTI_LINE_TEXT: MultiLineTextVariable.name,
    MULTIPLE_CHOICE: MultipleChoiceVariable.name,
    NUMERIC_SCALE: NumericScaleVariable.name,
    SELECT_BOX: SelectBoxVariable.name,
    SINGLE_LINE_TEXT: SingleLineTextVariable.name,
    CHECKBOX: CheckboxVariable.name,
    REFERENCE: ReferenceVariable.name,
    DATE: DateVariable.name,
    DATE_TIME: DateTimeVariable.name,
    LABEL: LabelVariable.name,
    BREAK: BreakVariable.name,
    CUSTOM: CustomVariable.name,
    UI_PAGE: UIPageVariable.name,
    WIDE_SINGLE_LINE_TEXT: WideSingleLineTextVariable.name,
    CUSTOM_WITH_LABEL: CustomWithLabelVariable.name,
    LOOKUP_SELECT_BOX: LookupSelectBoxVariable.name,
    CONTAINER_START: ContainerStartVariable.name,
    CONTAINER_END: ContainerEndVariable.name,
    LIST_COLLECTOR: ListCollectorVariable.name,
    LOOKUP_MULTIPLE_CHOICE: LookupMultipleChoiceVariable.name,
    HTML: HtmlVariable.name,
    CONTAINER_SPLIT: ContainerSplitVariable.name,
    MASKED: MaskedVariable.name,
    EMAIL: EmailVariable.name,
    URL: UrlVariable.name,
    IP_ADDRESS: IpAddressVariable.name,
    DURATION: DurationVariable.name,
    REQUESTED_FOR: RequestedForVariable.name,
    RICH_TEXT_LABEL: RichTextLabelVariable.name,
    ATTACHMENT: AttachmentVariable.name,
} as const

/** Variable types the ServiceNow platform allows as a dependentQuestion's source (parent) variable. */
const DEPENDENT_QUESTION_PARENT_TYPES: readonly string[] = [VariableTypeName.REFERENCE, VariableTypeName.REQUESTED_FOR]

/** Checks whether a variable type name (callee or resolved type) is a valid dependentQuestion parent type. */
export function isValidDependentQuestionParentType(typeName: string | undefined): boolean {
    return typeName !== undefined && DEPENDENT_QUESTION_PARENT_TYPES.includes(typeName)
}