import { NextResponse } from "next/server"
import { SchemaObject } from "../../../types/openapi"
import path from "path"
import { existsSync, promises as fs } from "fs"
import { parseDocument } from "yaml"

export async function GET(request: Request) {
  const { searchParams } = new URL(request.url)
  let name = searchParams.get("name")
  const area = searchParams.get("area")

  if (!name) {
    return NextResponse.json(
      {
        success: false,
        message: `Name is required.`,
      },
      {
        status: 400,
      }
    )
  }

  if (area !== "admin" && area !== "store") {
    return NextResponse.json(
      {
        success: false,
        message: `area ${area} is not allowed`,
      },
      {
        status: 400,
      }
    )
  }

  name = name
    .replace("#/components/schemas/", "")
    .replaceAll("./components/schemas/", "")

  const schemaPath = path.join(
    process.cwd(),
    "specs",
    area,
    "components",
    "schemas",
    name
  )

  if (!existsSync(schemaPath)) {
    return NextResponse.json(
      {
        success: false,
        message: `Schema ${name} doesn't exist.`,
      },
      {
        status: 404,
      }
    )
  }

  const schemaContent = await fs.readFile(schemaPath, "utf-8")
  const schema = parseDocument(schemaContent).toJS() as SchemaObject

  return NextResponse.json(
    {
      schema,
    },
    {
      status: 200,
    }
  )
}