const express = require('express');
const cors = require('cors');
const bodyParser = require('body-parser');
const {
  connect, syncDb, buildAndRegisterModel, setupAssociations, mapException, mapQueryParams
} = require('serve-sequelize');

const app = express();

const sequelize = connect({
  database: "app",
  username: "user",
  password: "secret",
  host: "127.0.0.1",
  dialect: "postgres",
});
syncDb(sequelize);

const listResource = {
  name: 'List',
  path: '/lists',
  schema: {
    name: {
      type: 'string',
      allowNull: false,
      validate: {
        matches: ["^[a-z0-9 -_]+$",'i'],
        len: [3, 80],
      },
    },
  },
  associations: {
    hasMany: [{
      resource: 'Todo',
    }],
  },
  operations: ['get', 'post', 'put', 'patch', 'delete'],
};
const listModel = buildAndRegisterModel(listResource, sequelize);

const todoResource = {
  name: 'Todo',
  path: '/todos',
  schema: {
    title: {
      type: 'string',
      allowNull: false,
      validate: {
        is: ["^[a-zA-Z0-9]+$",'i'],
        len: [2, 500],
      },
    },
    completed: {
      type: 'boolean',
      allowNull: true,
    },
  },
  associations: {
    belongsTo: [{
      resource: 'List'
    }],
  },
  operations: ['get', 'post', 'put', 'patch', 'delete'],
};
const todoModel = buildAndRegisterModel(todoResource, sequelize);

setupAssociations([listResource, todoResource], sequelize);

app.use(bodyParser.json())
app.use('*', cors({
  origin: (origin, callback) => callback(null, true)
}))
app.use(mapQueryParams)

app.resource(todoResource, sequelize)
app.resource(listResource, sequelize)

app.use(mapException)

app.listen(3000, () => {
  console.log('Example app listening on port 3000!')
})