import DatabaseClient
import Dependencies
import Elementary
import SharedModels
import Vapor
import VaporElementary

struct UserViewController: RouteCollection {

  @Dependency(\.database.users) var users

  func boot(routes: any RoutesBuilder) throws {
    // let users = routes.protected.grouped("users")
    let users = routes.grouped("users")
    users.get(use: index)
    users.post(use: create)
    users.get("create", use: form)
    users.group(":id") {
      $0.post(use: update)
      $0.get(use: get)
      $0.delete(use: delete)
    }
  }

  @Sendable
  func index(req: Request) async throws -> HTMLResponse {
    try await req.render {
      try await mainPage(UserDetail(user: nil))
    }
  }

  @Sendable
  func get(req: Request) async throws -> HTMLResponse {
    let user = try await users.get(req.ensureIDPathComponent())
    let detail = UserDetail(user: user)

    guard req.isHtmxRequest else {
      return try await req.render { try await mainPage(detail) }
    }
    return await req.render { UserDetail(user: user) }
  }

  @Sendable
  func create(req: Request) async throws -> HTMLResponse {
    _ = try await users.create(req.content.decode(User.Create.self))
    let users = try await users.fetchAll()
    // return req.redirect(to: "/users")
    return await req.render { UserTable(users: users) }
  }

  @Sendable
  func delete(req: Request) async throws -> HTTPStatus {
    try await users.delete(req.ensureIDPathComponent())
    return .ok
  }

  @Sendable
  func form(req: Request) async throws -> HTMLResponse {
    await req.render { UserForm(context: .create) }
  }

  @Sendable
  func update(req: Request) async throws -> HTMLResponse {
    let updates = try req.content.decode(User.Update.self)
    req.logger.info("\(updates)")
    let user = try await users.update(req.ensureIDPathComponent(), updates)
    return await req.render { UserTable.Row(user: user) }
  }

  private func mainPage<C: HTML>(_ html: C) async throws -> some SendableHTMLDocument where C: Sendable {
    let users = try await users.fetchAll()
    return MainPage(displayNav: true, route: .users) {
      div(.class("container")) {
        html
        UserTable(users: users)
      }
    }
  }
}