import {
  DebuggerEvent,
  ShallowUnwrapRef,
  UnwrapNestedRefs
} from './v3-generated'
import { UnionToIntersection } from './common'

import { Vue, VueConstructor } from './vue'
import {
  ComputedOptions,
  MethodOptions,
  ExtractComputedReturns,
  ComponentOptionsMixin,
  ComponentOptionsBase
} from './v3-component-options'
import { EmitFn, EmitsOptions } from './v3-setup-context'

/**
 * Custom properties added to component instances in any way and can be accessed through `this`
 *
 * @example
 * ```ts
 * import { Router } from 'vue-router'
 *
 * declare module 'vue' {
 *   interface ComponentCustomProperties {
 *     $router: Router
 *   }
 * }
 * ```
 */
export interface ComponentCustomProperties {}

export type ComponentInstance = InstanceType<VueConstructor>

export type OptionTypesKeys = 'P' | 'B' | 'D' | 'C' | 'M' | 'Defaults'

export type OptionTypesType<
  P = {},
  B = {},
  D = {},
  C extends ComputedOptions = {},
  M extends MethodOptions = {},
  Defaults = {}
> = {
  P: P
  B: B
  D: D
  C: C
  M: M
  Defaults: Defaults
}

type IsDefaultMixinComponent<T> = T extends ComponentOptionsMixin
  ? ComponentOptionsMixin extends T
    ? true
    : false
  : false

type MixinToOptionTypes<T> = T extends ComponentOptionsBase<
  infer P,
  infer B,
  infer D,
  infer C,
  infer M,
  infer Mixin,
  infer Extends,
  any,
  any,
  infer Defaults
>
  ? OptionTypesType<P & {}, B & {}, D & {}, C & {}, M & {}, Defaults & {}> &
      IntersectionMixin<Mixin> &
      IntersectionMixin<Extends>
  : never

// ExtractMixin(map type) is used to resolve circularly references
type ExtractMixin<T> = {
  Mixin: MixinToOptionTypes<T>
}[T extends ComponentOptionsMixin ? 'Mixin' : never]

export type IntersectionMixin<T> = IsDefaultMixinComponent<T> extends true
  ? OptionTypesType<{}, {}, {}, {}, {}, {}>
  : UnionToIntersection<ExtractMixin<T>>

export type UnwrapMixinsType<
  T,
  Type extends OptionTypesKeys
> = T extends OptionTypesType ? T[Type] : never

type EnsureNonVoid<T> = T extends void ? {} : T

export type CreateComponentPublicInstance<
  P = {},
  B = {},
  D = {},
  C extends ComputedOptions = {},
  M extends MethodOptions = {},
  Mixin extends ComponentOptionsMixin = ComponentOptionsMixin,
  Extends extends ComponentOptionsMixin = ComponentOptionsMixin,
  E extends EmitsOptions = {},
  PublicProps = P,
  Defaults = {},
  MakeDefaultsOptional extends boolean = false,
  PublicMixin = IntersectionMixin<Mixin> & IntersectionMixin<Extends>,
  PublicP = UnwrapMixinsType<PublicMixin, 'P'> & EnsureNonVoid<P>,
  PublicB = UnwrapMixinsType<PublicMixin, 'B'> & EnsureNonVoid<B>,
  PublicD = UnwrapMixinsType<PublicMixin, 'D'> & EnsureNonVoid<D>,
  PublicC extends ComputedOptions = UnwrapMixinsType<PublicMixin, 'C'> &
    EnsureNonVoid<C>,
  PublicM extends MethodOptions = UnwrapMixinsType<PublicMixin, 'M'> &
    EnsureNonVoid<M>,
  PublicDefaults = UnwrapMixinsType<PublicMixin, 'Defaults'> &
    EnsureNonVoid<Defaults>
> = ComponentPublicInstance<
  PublicP,
  PublicB,
  PublicD,
  PublicC,
  PublicM,
  E,
  PublicProps,
  PublicDefaults,
  MakeDefaultsOptional
>

// public properties exposed on the proxy, which is used as the render context
// in templates (as `this` in the render option)
export type ComponentPublicInstance<
  P = {}, // props type extracted from props option
  B = {}, // raw bindings returned from setup()
  D = {}, // return from data()
  C extends ComputedOptions = {},
  M extends MethodOptions = {},
  E extends EmitsOptions = {},
  PublicProps = P,
  Defaults = {},
  MakeDefaultsOptional extends boolean = false,
  Options = ComponentOptionsBase<
    any,
    any,
    any,
    any,
    any,
    any,
    any,
    any,
    any,
    any
  >
> = Vue3Instance<
  D,
  P,
  PublicProps,
  E,
  Defaults,
  MakeDefaultsOptional,
  Options
> &
  Readonly<P> &
  ShallowUnwrapRef<B> &
  UnwrapNestedRefs<D> &
  ExtractComputedReturns<C> &
  M &
  ComponentCustomProperties

interface Vue3Instance<
  D,
  P,
  PublicProps,
  E,
  Defaults,
  MakeDefaultsOptional,
  Options
> extends Vue<
    D,
    Readonly<
      MakeDefaultsOptional extends true
        ? Partial<Defaults> & Omit<P & PublicProps, keyof Defaults>
        : P & PublicProps
    >,
    ComponentPublicInstance,
    Options & MergedComponentOptionsOverride,
    EmitFn<E>
  > {}

type MergedHook<T = () => void> = T | T[]

export type MergedComponentOptionsOverride = {
  beforeCreate?: MergedHook
  created?: MergedHook
  beforeMount?: MergedHook
  mounted?: MergedHook
  beforeUpdate?: MergedHook
  updated?: MergedHook
  activated?: MergedHook
  deactivated?: MergedHook
  /** @deprecated use `beforeUnmount` instead */
  beforeDestroy?: MergedHook
  beforeUnmount?: MergedHook
  /** @deprecated use `unmounted` instead */
  destroyed?: MergedHook
  unmounted?: MergedHook
  renderTracked?: MergedHook<DebuggerHook>
  renderTriggered?: MergedHook<DebuggerHook>
  errorCaptured?: MergedHook<ErrorCapturedHook>
}

export type DebuggerHook = (e: DebuggerEvent) => void

export type ErrorCapturedHook<TError = unknown> = (
  err: TError,
  instance: ComponentPublicInstance | null,
  info: string
) => boolean | void

export type ComponentPublicInstanceConstructor<
  T extends ComponentPublicInstance<
    Props,
    RawBindings,
    D,
    C,
    M
  > = ComponentPublicInstance<any, any, any>,
  Props = any,
  RawBindings = any,
  D = any,
  C extends ComputedOptions = ComputedOptions,
  M extends MethodOptions = MethodOptions
> = {
  new (...args: any[]): T
}