import {Directive} from '../Directive'
import {Inject, Injectable} from '../../di'
import {Routing} from '../../service/Routing'
import Table = require('cli-table')

@Injectable()
export class RoutesDirective extends Directive {
    @Inject()
    protected readonly routing!: Routing

    getDescription(): string {
        return 'List routes registered in the application'
    }

    getKeywords(): string | string[] {
        return ['routes']
    }

    async handle(): Promise<void> {
        const compiled = this.routing.getCompiled()

        const maxRouteLength = compiled.strings().max('length')
        const maxHandlerLength = compiled.mapCall('getHandlerDisplay')
            .whereDefined()
            .max('length')
        const maxNameLength = compiled.mapCall('getAlias')
            .whereDefined()
            .max('length')

        const rows = compiled.map(route => [String(route), route.getHandlerDisplay(), route.getAlias() || ''])

        const table = new Table({
            head: ['Route', 'Handler', 'Name'],
            colWidths: [maxRouteLength + 2, maxHandlerLength + 2, maxNameLength + 2],
        })

        table.push(...rows.toArray())

        this.info('\n' + table)
    }
}