234 lines
7.2 KiB
JavaScript
234 lines
7.2 KiB
JavaScript
const { Model } = require('flitter-orm')
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/**
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* Model representing a starting lineup/bench configuration for a
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* given team. These will have copies frozen for each week that progresses.
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* @extends Model
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*/
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class Lineup extends Model {
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static get services() {
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return [...super.services, 'models']
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}
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static get schema() {
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return {
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// Associated team ID
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team_id: String,
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// Array of player IDs on the team on the bench
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benched_player_ids: [String],
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// Array of player IDs on the team and their starting positions
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starting_players: [{
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player_id: String,
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position: String,
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}],
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// If true, this is the current "draft" of the lineup
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active: { type: Boolean, default: true },
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// If not active, then it was archived for the week with this number
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week_num: Number,
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}
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}
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async calculate_fantasy_points() {
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const starting_players = await this.players_in_starting()
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let points = 0
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for ( const player of starting_players ) {
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points += await player.points_for_week(this.week_num)
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}
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return points
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}
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/**
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* Given a team, fetch the latest draft lineup for that team.
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* This will also update the lineup record so that it includes all players
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* currently on the team (benching any players not already in the lineup).
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*
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* If no lineup exists, one will be created.
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*
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* @param {Team} team
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* @return {Promise<Lineup>}
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*/
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static async get_and_update_for_team(team) {
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let lineup = await this.findOne({ team_id: team.id })
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if ( !lineup ) {
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lineup = new this({
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team_id: team.id,
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benched_player_ids: [],
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starting_players: [],
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active: true,
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})
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} else if ( !lineup.active ) {
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lineup = new this({
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team_id: team.id,
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benched_player_ids: lineup.benched_player_ids,
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starting_players: lineup.starting_players,
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active: true,
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})
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}
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// Make sure all players on the team are either on the bench or in the lineup
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const players = await team.players()
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for ( const player of players ) {
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if ( !lineup.has_player(player) ) {
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lineup.bench_player(player)
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}
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}
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await lineup.save()
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return lineup
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}
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/**
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* Returns an array of Players that are on the bench for this lineup.
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* @return {Promise<Array<Model>>}
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*/
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async players_on_bench() {
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const Player = this.models.get('Player')
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return Player.find({
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_id: {
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$in: this.benched_player_ids.map(x => Player.to_object_id(x)),
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},
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})
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}
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/**
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* Returns an array of Players that are on the starting lineup.
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* @return {Promise<Array<Model>>}
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*/
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async players_in_starting() {
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const Player = this.models.get('Player')
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return Player.find({
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_id: {
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$in: this.starting_players.map(x => Player.to_object_id(x.player_id)),
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},
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})
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}
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/**
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* Returns true if the given player is on the bench in this lineup.
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* @param {Player} player
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* @return {boolean}
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*/
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has_bench_player(player) {
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return this.benched_player_ids.includes(player.id)
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}
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/**
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* Returns true if the given player is on the starting lineup in this lineup.
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* @param {Player} player
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* @return {boolean}
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*/
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has_starting_player(player) {
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return !!this.starting_players.find(x => x.player_id === player.id)
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}
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/**
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* Returns true if the given player is in this lineup anywhere.
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* @param {Player} player
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* @return {boolean}
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*/
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has_player(player) {
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return this.has_bench_player(player) || this.has_starting_player(player)
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}
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/**
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* Removes the player from the starting lineup if they are there and
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* adds them to the bench if they aren't already there.
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* @param {Player} player
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*/
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bench_player(player) {
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this.starting_players = this.starting_players.filter(x => x.player_id !== player.id)
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if ( !this.benched_player_ids.includes(player.id) ) {
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this.benched_player_ids.push(player.id)
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}
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}
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/**
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* Given the player_id/position record, add it to the starting lineup.
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* @param {object} player_position_record
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*/
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start_player(player_position_record) {
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this.benched_player_ids = this.benched_player_ids.filter(x => x !== player_position_record.player_id)
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this.starting_players = this.starting_players.filter(x => x.player_id !== player_position_record.player_id)
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this.starting_players.push(player_position_record)
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}
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/**
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* Remove all players from the bench and the starting lineup.
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*/
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clear_lineup() {
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this.starting_players = []
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this.benched_player_ids = []
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}
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/**
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* Cast the lineup to an object which can be returned via the API.
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* @return {Promise<object>}
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*/
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async to_api() {
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// positions to guarantee are in the line-up
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let lineup_positions = ['QB', 'RB', 'RB', 'WR', 'WR', 'TE', 'FLX', 'DST']
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const data = {
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team_id: this.team_id,
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active: this.active,
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week_num: this.week_num,
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}
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// build the starting players data
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const starting_players = await this.players_in_starting()
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const build_starting_players = []
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for ( const player of this.starting_players ) {
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// Find the player instance and cast it to an API object
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const player_inst = starting_players.find(x => x.id === player.player_id)
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build_starting_players.push({
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...(await player_inst.to_api()),
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position: player.position
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})
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// remove the position from the array of positions to back-fill
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let found_one = false
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lineup_positions = lineup_positions.filter(x => {
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if ( !found_one && x === player.position ) {
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found_one = true
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return false
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}
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return true
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})
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}
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// Fill in any missing positions into the data
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for ( const position of lineup_positions ) {
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build_starting_players.push ({ position })
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}
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// build the benched players data
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const bench_players = await this.players_on_bench()
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const build_benched_players = []
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for ( const player of bench_players ) {
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// Cast the starting player to an API object
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const obj = await player.to_api()
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obj.position = 'B'
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build_benched_players.push(obj)
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}
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// If there are no players on the bench, add a placeholder slot.
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if ( build_benched_players.length < 1 ) {
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build_benched_players.push({ position: 'B' })
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}
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data.starting_players = build_starting_players
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data.benched_players = build_benched_players
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return data
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}
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}
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module.exports = exports = Lineup
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