//
//  RoleCtrl.swift
//  
//
//  Created by Michiel Carman on 11/4/21.
//

import Foundation
import Vapor
import Fluent
import FluentPostgresDriver

final class RoleCtrl{
    //Create Unit
    func create(req: Request) throws -> EventLoopFuture<mdlRole.Output>{
        let input = try req.content.decode(mdlRole.Input.self)
        let output = self.createUnit(input)
        return self.save(output, req, input)
        
    }
    
    //Update Unit
    func update(req: Request) throws -> EventLoopFuture<mdlRole.Output>{
        let input = try req.content.decode(mdlRole.Input.self)
        return try qbase(req: req).first().unwrap(or: Abort(.notFound)).flatMap{output in self.mapOutput(output, input)
            return self.save(output, req: req)
        }
    }
    
    //Get all Divisions
    func readAll(req: Request) throws -> EventLoopFuture<Page<mdlRole.Output>>{
        return try qbase(req: req)
            .paginate(for: req)
            .map{
                page in page.map{
                    self.createRead($0)
                }
            }
    }
    //Get 1 Division
    func read(req: Request) throws -> EventLoopFuture<mdlRole.Output>{
        
        return try qbase(req: req).first().unwrap(or: Abort(.internalServerError)).map{self.createRead($0)}
        
    }
    //Delete 1 Division
    func delete(req: Request) throws -> EventLoopFuture<HTTPStatus>{
        
        guard let id = req.parameters.get("id", as: Int.self) else{
            throw Abort(.badRequest)
        }
        return mdlRole.find(id, on: req.db).unwrap(or: Abort(.notFound)).flatMap{ $0.delete(on: req.db)}.map{.ok}
    }
    
}
extension RoleCtrl{
    //Query Settings
    func qbase(req: Request) throws -> QueryBuilder<mdlRole> {
        let query = mdlRole.query(on:  req.db)
            .with(\.$users)
        if let id = req.parameters.get("id", as: Int.self){
            return query.filter(\.$id == id)
        } else{
            return query
        }
    }
    //create Output
    func createRead(_ output: mdlRole) -> mdlRole.Output {
        return mdlRole.Output(
            id: output.id!,
            name: output.name,
            description: output.description,
            //createdate: output.createdate,
            //createuserid: output.createuserid,
            //updatedate: output.updatedate,
            //updateuserid: output.updateuserid,
            users: output.$users.value!
        )
    }
    
    func mapOutput(_ output: Optional<mdlRole>.WrappedType, _ input: mdlRole.Input){
        output.name = input.name;
        output.description = input.description;
        output.$users.value = input.users
    }
    
    func createUnit(_ input: mdlRole.Input) -> mdlRole {
        return mdlRole(
            id: input.id ?? nil
            , name: input.name
            , description: input.name
            , users: input.users
        )
    }
    
    //update function
    func save(_ output: Optional<mdlRole>.WrappedType, req: Request) -> EventLoopFuture<mdlRole.Output> {
        return output
            .save(on: req.db)
            .map{mdlRole.Output(
                id: output.id!
                , name: output.name
                , description: output.description
                , users: output.users
            )
        }
    }
    //create function
    func save(_ output: mdlRole, _ req: Request, _ input: mdlRole.Input) -> EventLoopFuture<mdlRole.Output> {
        return output
            .save(on: req.db)
            .map{
                mdlRole.Output(
                    id: output.id!
                    , name: output.name
                    , description: output.description
                    , users: input.users
                )
                
            }
    }
    
}
extension RoleCtrl: RouteCollection{
    func boot(routes: RoutesBuilder) throws{
        let apigroup = routes.grouped("roles")
        apigroup.get("", use: readAll)
        apigroup.get(":id", use: read)
        apigroup.post("", use: create)
        apigroup.post(":id", use: update)
        apigroup.delete(":id", use: delete)
        
        
    }
}