/* eslint-disable no-use-before-define */
import type { PackageJson } from "pkg-types";
import type { Hookable } from "hookable";
import type { RollupOptions, RollupBuild, OutputOptions } from "rollup";
import type { MkdistOptions } from "mkdist";
import type { Schema } from "untyped";
import type { RollupReplaceOptions } from "@rollup/plugin-replace";
import type { RollupAliasOptions } from "@rollup/plugin-alias";
import type { RollupNodeResolveOptions } from "@rollup/plugin-node-resolve";
import type { RollupJsonOptions } from "@rollup/plugin-json";
import type { Options as RollupDtsOptions } from "rollup-plugin-dts";
import type commonjs from "@rollup/plugin-commonjs";
import type { JITIOptions } from "jiti";
import type { EsbuildOptions } from "./builder/plugins/esbuild";

// eslint-disable-next-line @typescript-eslint/ban-types
export type RollupCommonJSOptions = Parameters<typeof commonjs>[0] & {};

export interface BaseBuildEntry {
  builder?: "untyped" | "rollup" | "mkdist";
  input: string;
  name?: string;
  outDir?: string;
  declaration?: "compatible" | "node16" | boolean;
}

export interface UntypedBuildEntry extends BaseBuildEntry {
  builder: "untyped";
  defaults?: Record<string, any>;
}

export interface RollupBuildEntry extends BaseBuildEntry {
  builder: "rollup";
}

type _BaseAndMkdist = BaseBuildEntry & MkdistOptions;
export interface MkdistBuildEntry extends _BaseAndMkdist {
  builder: "mkdist";
}

export type BuildEntry =
  | BaseBuildEntry
  | RollupBuildEntry
  | UntypedBuildEntry
  | MkdistBuildEntry;

export interface RollupBuildOptions {
  emitCJS?: boolean;
  cjsBridge?: boolean;
  preserveDynamicImports?: boolean;
  inlineDependencies?: boolean;
  output?: OutputOptions;
  // Plugins
  replace: RollupReplaceOptions | false;
  alias: RollupAliasOptions | false;
  resolve: RollupNodeResolveOptions | false;
  json: RollupJsonOptions | false;
  esbuild: EsbuildOptions | false;
  commonjs: RollupCommonJSOptions | false;
  dts: RollupDtsOptions;
}

export interface BuildOptions {
  name: string;
  rootDir: string;
  entries: BuildEntry[];
  clean: boolean;
  /** @experimental */
  sourcemap: boolean;
  /**
   * * `compatible` means "src/index.ts" will generate "dist/index.d.mts", "dist/index.d.cts" and "dist/index.d.ts".
   * * `node16` means "src/index.ts" will generate "dist/index.d.mts" and "dist/index.d.cts".
   * * `true` is equivalent to `compatible`.
   * * `false` will disable declaration generation.
   * * `undefined` will auto detect based on "package.json". If "package.json" has "types" field, it will be `"compatible"`, otherwise `false`.
   */
  declaration?: "compatible" | "node16" | boolean;
  outDir: string;
  stub: boolean;
  stubOptions: { jiti: Omit<JITIOptions, "transform" | "onError"> };
  externals: (string | RegExp)[];
  dependencies: string[];
  peerDependencies: string[];
  devDependencies: string[];
  alias: { [find: string]: string };
  replace: { [find: string]: string };
  failOnWarn?: boolean;
  rollup: RollupBuildOptions;
}

export interface BuildContext {
  options: BuildOptions;
  pkg: PackageJson;
  buildEntries: {
    path: string;
    bytes?: number;
    exports?: string[];
    chunks?: string[];
    chunk?: boolean;
    modules?: { id: string; bytes: number }[];
  }[];
  usedImports: Set<string>;
  warnings: Set<string>;
  hooks: Hookable<BuildHooks>;
}

export type BuildPreset = BuildConfig | (() => BuildConfig);

type DeepPartial<T> = { [P in keyof T]?: DeepPartial<T[P]> };

export interface BuildConfig
  extends DeepPartial<Omit<BuildOptions, "entries">> {
  entries?: (BuildEntry | string)[];
  preset?: string | BuildPreset;
  hooks?: Partial<BuildHooks>;
}

export interface UntypedOutput {
  fileName: string;
  contents: string;
}

export interface UntypedOutputs {
  markdown: UntypedOutput;
  schema: UntypedOutput;
  defaults: UntypedOutput;
  declaration?: UntypedOutput;
}

export interface BuildHooks {
  "build:prepare": (ctx: BuildContext) => void | Promise<void>;
  "build:before": (ctx: BuildContext) => void | Promise<void>;
  "build:done": (ctx: BuildContext) => void | Promise<void>;

  "rollup:options": (
    ctx: BuildContext,
    options: RollupOptions,
  ) => void | Promise<void>;
  "rollup:build": (
    ctx: BuildContext,
    build: RollupBuild,
  ) => void | Promise<void>;
  "rollup:dts:options": (
    ctx: BuildContext,
    options: RollupOptions,
  ) => void | Promise<void>;
  "rollup:dts:build": (
    ctx: BuildContext,
    build: RollupBuild,
  ) => void | Promise<void>;
  "rollup:done": (ctx: BuildContext) => void | Promise<void>;

  "mkdist:entries": (
    ctx: BuildContext,
    entries: MkdistBuildEntry[],
  ) => void | Promise<void>;
  "mkdist:entry:options": (
    ctx: BuildContext,
    entry: MkdistBuildEntry,
    options: MkdistOptions,
  ) => void | Promise<void>;
  "mkdist:entry:build": (
    ctx: BuildContext,
    entry: MkdistBuildEntry,
    output: { writtenFiles: string[] },
  ) => void | Promise<void>;
  "mkdist:done": (ctx: BuildContext) => void | Promise<void>;

  "untyped:entries": (
    ctx: BuildContext,
    entries: UntypedBuildEntry[],
  ) => void | Promise<void>;
  "untyped:entry:options": (
    ctx: BuildContext,
    entry: UntypedBuildEntry,
    options: any,
  ) => void | Promise<void>;
  "untyped:entry:schema": (
    ctx: BuildContext,
    entry: UntypedBuildEntry,
    schema: Schema,
  ) => void | Promise<void>;
  "untyped:entry:outputs": (
    ctx: BuildContext,
    entry: UntypedBuildEntry,
    outputs: UntypedOutputs,
  ) => void | Promise<void>;
  "untyped:done": (ctx: BuildContext) => void | Promise<void>;
}

export function defineBuildConfig(
  config: BuildConfig | BuildConfig[],
): BuildConfig[] {
  return (Array.isArray(config) ? config : [config]).filter(Boolean);
}

export function definePreset(preset: BuildPreset): BuildPreset {
  return preset;
}