import * as Effect from "effect/Effect";
import * as FileSystem from "effect/FileSystem";
import * as Layer from "effect/Layer";
import * as Path from "effect/Path";

import {
  WorkspaceFileSystem,
  WorkspaceFileSystemError,
  type WorkspaceFileSystemShape,
} from "../Services/WorkspaceFileSystem.ts";
import { WorkspaceEntries } from "../Services/WorkspaceEntries.ts";
import { WorkspacePaths } from "../Services/WorkspacePaths.ts";

export const makeWorkspaceFileSystem = Effect.gen(function* () {
  const fileSystem = yield* FileSystem.FileSystem;
  const path = yield* Path.Path;
  const workspacePaths = yield* WorkspacePaths;
  const workspaceEntries = yield* WorkspaceEntries;

  const writeFile: WorkspaceFileSystemShape["writeFile"] = Effect.fn(
    "WorkspaceFileSystem.writeFile",
  )(function* (input) {
    const target = yield* workspacePaths.resolveRelativePathWithinRoot({
      workspaceRoot: input.cwd,
      relativePath: input.relativePath,
    });

    yield* fileSystem.makeDirectory(path.dirname(target.absolutePath), { recursive: true }).pipe(
      Effect.mapError(
        (cause) =>
          new WorkspaceFileSystemError({
            cwd: input.cwd,
            relativePath: input.relativePath,
            operation: "workspaceFileSystem.makeDirectory",
            detail: cause.message,
            cause,
          }),
      ),
    );
    yield* fileSystem.writeFileString(target.absolutePath, input.contents).pipe(
      Effect.mapError(
        (cause) =>
          new WorkspaceFileSystemError({
            cwd: input.cwd,
            relativePath: input.relativePath,
            operation: "workspaceFileSystem.writeFile",
            detail: cause.message,
            cause,
          }),
      ),
    );
    yield* workspaceEntries.invalidate(input.cwd);
    return { relativePath: target.relativePath };
  });
  return { writeFile } satisfies WorkspaceFileSystemShape;
});

export const WorkspaceFileSystemLive = Layer.effect(WorkspaceFileSystem, makeWorkspaceFileSystem);