const { ApolloServer } = require('apollo-server-express')

const Express = require('express')

/**

* @description Command function is implemented in the bin folder.

*/

const mockFunctionsToResolverMap = (resolverMap) =>{

let mockFunctions = {}

for (var key in resolverMap) {

if (!resolverMap.hasOwnProperty(key)) continue

mockFunctions[key] = resolverMap[key]()

}

return mockFunctions

}

module.exports = {

mockFunctionsToResolverMap,

openServer: ({typeDefs, resolvers, callback}) => {

const apolloServer = new ApolloServer({

typeDefs,

resolvers: mockFunctionsToResolverMap(resolvers),

introspection: true,

playground: {

settings: {

'editor.theme': 'light'

}

}

})

const expressInstance = Express()

apolloServer.applyMiddleware({

path: "/",

app: expressInstance

})

let expressListener = expressInstance.listen(0, () => {

callback(true, expressInstance, expressListener)

}).on("error", (err) => {

callback(false, expressInstance, expressListener)

console.log(err)

})

}

}