import { Machine, EventObject, Service } from '@zag-js/core';
import { PropTypes, RequiredBy, DirectionProperty, CommonProperties } from '@zag-js/types';

interface StepChangeDetails {
    step: number;
}
interface StepInvalidDetails {
    step: number;
    action: "next" | "set";
    targetStep?: number;
}
interface ElementIds {
    root?: string | undefined;
    list?: string | undefined;
    triggerId?: ((index: number) => string) | undefined;
    contentId?: ((index: number) => string) | undefined;
}
interface StepsProps extends DirectionProperty, CommonProperties {
    /**
     * The custom ids for the stepper elements
     */
    ids?: ElementIds | undefined;
    /**
     * The controlled value of the stepper
     */
    step?: number | undefined;
    /**
     * The initial value of the stepper when rendered.
     * Use when you don't need to control the value of the stepper.
     */
    defaultStep?: number | undefined;
    /**
     * Callback to be called when the value changes
     */
    onStepChange?: ((details: StepChangeDetails) => void) | undefined;
    /**
     * Callback to be called when a step is completed
     */
    onStepComplete?: VoidFunction | undefined;
    /**
     * If `true`, the stepper requires the user to complete the steps in order
     */
    linear?: boolean | undefined;
    /**
     * The orientation of the stepper
     * @default "horizontal"
     */
    orientation?: "horizontal" | "vertical" | undefined;
    /**
     * The total number of steps
     */
    count?: number | undefined;
    /**
     * Whether a step is valid. Invalid steps block forward navigation in linear mode.
     * @default () => true
     */
    isStepValid?: ((index: number) => boolean) | undefined;
    /**
     * Whether a step can be skipped during navigation.
     * Skippable steps are bypassed when using next/prev.
     * @default () => false
     */
    isStepSkippable?: ((index: number) => boolean) | undefined;
    /**
     * Called when navigation is blocked due to an invalid step.
     */
    onStepInvalid?: ((details: StepInvalidDetails) => void) | undefined;
}
type PropsWithDefault = "orientation" | "linear" | "count";
interface PrivateContext {
    step: number;
}
type ComputedContext = Readonly<{
    percent: number;
    hasNextStep: boolean;
    hasPrevStep: boolean;
    completed: boolean;
}>;
interface StepsSchema {
    props: RequiredBy<StepsProps, PropsWithDefault>;
    context: PrivateContext;
    computed: ComputedContext;
    state: "idle";
    event: EventObject;
    action: string;
    effect: string;
    guard: string;
}
type StepsService = Service<StepsSchema>;
type StepsMachine = Machine<StepsSchema>;
interface ItemProps {
    index: number;
}
interface ItemState {
    /**
     * The index of the step
     */
    index: number;
    /**
     * The id of the trigger element
     */
    triggerId: string;
    /**
     * The id of the content element
     */
    contentId: string;
    /**
     * Whether the step is the current step
     */
    current: boolean;
    /**
     * Whether the step is completed (index < current step)
     */
    completed: boolean;
    /**
     * Whether the step is incomplete (index > current step)
     */
    incomplete: boolean;
    /**
     * Whether the step is the last step
     */
    last: boolean;
    /**
     * Whether the step is the first step
     */
    first: boolean;
    /**
     * Whether the step can be skipped (based on `isStepSkippable` callback)
     */
    skippable: boolean;
    /**
     * Lazy validation check - only evaluated when called
     */
    isValid: () => boolean;
}
interface StepsApi<T extends PropTypes = PropTypes> {
    /**
     * The value of the stepper.
     */
    value: number;
    /**
     * The percentage of the stepper.
     */
    percent: number;
    /**
     * The total number of steps.
     */
    count: number;
    /**
     * Whether the stepper has a next step.
     */
    hasNextStep: boolean;
    /**
     * Whether the stepper has a previous step.
     */
    hasPrevStep: boolean;
    /**
     * Whether the stepper is completed.
     */
    isCompleted: boolean;
    /**
     * Check if a specific step is valid (lazy evaluation)
     */
    isStepValid: (index: number) => boolean;
    /**
     * Check if a specific step can be skipped
     */
    isStepSkippable: (index: number) => boolean;
    /**
     * Function to set the value of the stepper.
     */
    setStep: (step: number) => void;
    /**
     * Function to go to the next step.
     */
    goToNextStep: VoidFunction;
    /**
     * Function to go to the previous step.
     */
    goToPrevStep: VoidFunction;
    /**
     * Function to go to reset the stepper.
     */
    resetStep: VoidFunction;
    /**
     * Returns the state of the item at the given index.
     */
    getItemState: (props: ItemProps) => ItemState;
    getRootProps: () => T["element"];
    getListProps: () => T["element"];
    getItemProps: (props: ItemProps) => T["element"];
    getTriggerProps: (props: ItemProps) => T["element"];
    getContentProps: (props: ItemProps) => T["element"];
    getNextTriggerProps: () => T["button"];
    getPrevTriggerProps: () => T["button"];
    getProgressProps: () => T["element"];
    getIndicatorProps: (props: ItemProps) => T["element"];
    getSeparatorProps: (props: ItemProps) => T["element"];
}

export type { ElementIds, ItemProps, ItemState, StepChangeDetails, StepInvalidDetails, StepsApi, StepsMachine, StepsProps, StepsSchema, StepsService };