import type { Logger } from "#Source/log/index.ts"
import type { Standard } from "#Source/validation/index.ts"

import type { ApiCore } from "./api-core.ts"
import type { ErrorResult, SuccessResult } from "./api-result.ts"
import type { ApiSchemaOptions } from "./api-schema.ts"

export interface ApiHandlerContext<
  Path extends string,
  Method extends "get" | "post",
  InputQuerySchema extends Standard.Schema,
  InputBodySchema extends Standard.Schema,
  OutputErrorSchema extends Standard.Schema,
  OutputSuccessSchema extends Standard.Schema,
> extends ApiSchemaOptions<
  Path,
  Method,
  InputQuerySchema,
  InputBodySchema,
  OutputErrorSchema,
  OutputSuccessSchema
> {
  inputQuery: Standard.Schema.InferOutput<InputQuerySchema>
  inputBody: Standard.Schema.InferOutput<InputBodySchema>

  apiCore: ApiCore
  logger: Logger
}

// oxlint-disable-next-line typescript/no-explicit-any
export type AnyApiHandlerContext = ApiHandlerContext<any, any, any, any, any, any>

export type GetInputQuerySchemaFromApiHandlerContext<Target extends AnyApiHandlerContext> =
  Target extends ApiHandlerContext<
    infer _,
    infer __,
    infer InputQuerySchema,
    infer ___,
    infer ____,
    infer ______
  >
    ? InputQuerySchema
    : never
export type GetInputBodySchemaFromApiHandlerContext<Target extends AnyApiHandlerContext> =
  Target extends ApiHandlerContext<
    infer _,
    infer __,
    infer ___,
    infer InputBodySchema,
    infer ____,
    infer ______
  >
    ? InputBodySchema
    : never
export type GetOutputErrorSchemaFromApiHandlerContext<Target extends AnyApiHandlerContext> =
  Target extends ApiHandlerContext<
    infer _,
    infer __,
    infer ___,
    infer ____,
    infer OutputErrorSchema,
    infer ______
  >
    ? OutputErrorSchema
    : never
export type GetOutputSuccessSchemaFromApiHandlerContext<Target extends AnyApiHandlerContext> =
  Target extends ApiHandlerContext<
    infer _,
    infer __,
    infer ___,
    infer ____,
    infer ______,
    infer OutputSuccessSchema
  >
    ? OutputSuccessSchema
    : never

export type GetInputQueryFromApiHandlerContext<Target extends AnyApiHandlerContext> =
  Standard.Schema.InferOutput<GetInputQuerySchemaFromApiHandlerContext<Target>>
export type GetInputBodyFromApiHandlerContext<Target extends AnyApiHandlerContext> =
  Standard.Schema.InferOutput<GetInputBodySchemaFromApiHandlerContext<Target>>
export type GetOutputErrorFromApiHandlerContext<Target extends AnyApiHandlerContext> =
  Standard.Schema.InferOutput<GetOutputErrorSchemaFromApiHandlerContext<Target>>
export type GetOutputSuccessFromApiHandlerContext<Target extends AnyApiHandlerContext> =
  Standard.Schema.InferOutput<GetOutputSuccessSchemaFromApiHandlerContext<Target>>
export type GetOutputFromApiHandlerContext<Target extends AnyApiHandlerContext> =
  | GetOutputErrorFromApiHandlerContext<Target>
  | GetOutputSuccessFromApiHandlerContext<Target>

export type ApiHandlerResult<
  OutputErrorSchema extends Standard.Schema,
  OutputSuccessSchema extends Standard.Schema,
> =
  | ErrorResult<Standard.Schema.InferOutput<OutputErrorSchema>>
  | SuccessResult<Standard.Schema.InferOutput<OutputSuccessSchema>>

export type ApiHandler<
  Path extends string,
  Method extends "get" | "post",
  InputQuerySchema extends Standard.Schema,
  InputBodySchema extends Standard.Schema,
  OutputErrorSchema extends Standard.Schema,
  OutputSuccessSchema extends Standard.Schema,
> = (
  context: ApiHandlerContext<
    Path,
    Method,
    InputQuerySchema,
    InputBodySchema,
    OutputErrorSchema,
    OutputSuccessSchema
  >,
) => Promise<ApiHandlerResult<OutputErrorSchema, OutputSuccessSchema>>

// oxlint-disable-next-line typescript/no-explicit-any
export type AnyApiHandler = ApiHandler<any, any, any, any, any, any>