//! Client library for the [Challonge](https://challonge.com) REST API.
//!
//! Log in to Challonge with `Challonge::new`.
//! Call API methods to interact with the service.
//!
//! For Challonge API documentation [look here](http://api.challonge.com/ru/v1/documents).
//!
//! For examples, see the `examples` directory in the source tree.
#![warn(missing_docs)]

extern crate base64;
extern crate chrono;
extern crate reqwest;
extern crate serde_json;

use chrono::offset::Local;
use chrono::Date;
#[macro_use]
mod macroses;
pub mod attachments;
pub mod error;
pub mod matches;
pub mod participants;
pub mod tournament;
mod util;
pub use attachments::{Attachment, AttachmentCreate, AttachmentId, Index as AttachmentIndex};
use error::Error;
pub use matches::{
    Index as MatchIndex, Match, MatchId, MatchScore, MatchScores, MatchState, MatchUpdate,
};
pub use participants::{Index as ParticipantIndex, Participant, ParticipantCreate, ParticipantId};
pub use tournament::{
    Index as TournamentIndex, Tournament, TournamentCreate, TournamentId, TournamentIncludes,
    TournamentState, TournamentType,
};

const API_BASE: &str = "https://api.challonge.com/v1";

fn make_headers(user_name: String, api_key: String) -> reqwest::header::HeaderMap {
    // use headers::Authorization;
    // use headers::Header;

    let mut headers = reqwest::header::HeaderMap::new();
    headers.insert(
        reqwest::header::AUTHORIZATION,
        format!(
            "Basic {}",
            base64::encode(format!("{}:{}", user_name, api_key))
        )
        .parse()
        .unwrap(),
    );
    // let auth_header = Authorization::basic(&user_name, &api_key);
    // let mut value = headers::HeaderValue::;
    // headers.extend(.encode(values));
    // headers.insert(hyper::header::AUTHORIZATION, Authorization::basic(&user_name, &api_key).encode().);
    headers
}

type FieldPairs = Vec<(&'static str, String)>;

fn pairs_to_string(params: FieldPairs) -> String {
    let mut body = String::new();
    let mut sep = "";
    for p in params {
        body.push_str(sep);
        body.push_str(&format!("{}={}", p.0, p.1));
        sep = "&";
    }
    body
}

fn pcs_to_pairs(participants: Vec<ParticipantCreate>) -> FieldPairs {
    let mut params = Vec::new();
    for p in participants {
        params.push((ps!("email"), p.email.clone()));
        params.push((ps!("seed"), p.seed.to_string()));
        params.push((ps!("misc"), p.misc.clone()));

        if let Some(n) = p.name.as_ref() {
            params.push((ps!("name"), n.clone()));
        }
        if let Some(un) = p.challonge_username.as_ref() {
            params.push((ps!("challonge_username"), un.clone()));
        }
    }
    params
}

fn pc_to_pairs(participant: &ParticipantCreate) -> FieldPairs {
    let mut params = vec![
        (p!("email"), participant.email.clone()),
        (p!("seed"), participant.seed.to_string()),
        (p!("misc"), participant.misc.clone()),
    ];

    if let Some(n) = participant.name.as_ref() {
        params.push((p!("name"), n.clone()));
    }
    if let Some(un) = participant.challonge_username.as_ref() {
        params.push((p!("challonge_username"), un.clone()));
    }
    params
}

fn at_to_pairs(attachment: &AttachmentCreate) -> FieldPairs {
    let mut params = FieldPairs::new();

    if let Some(a) = attachment.asset.as_ref() {
        params.push((a!("asset"), String::from_utf8(a.clone()).unwrap()));
    }
    if let Some(url) = attachment.url.as_ref() {
        params.push((a!("url"), url.clone()));
    }
    if let Some(d) = attachment.description.as_ref() {
        params.push((a!("description"), d.clone()));
    }
    params
}

fn tc_to_pairs(tournament: &TournamentCreate) -> FieldPairs {
    let mut params = vec![
        (t!("name"), tournament.name.clone()),
        (
            t!("tournament_type"),
            tournament.tournament_type.to_string(),
        ),
        (t!("url"), tournament.url.clone()),
        (t!("subdomain"), tournament.subdomain.clone()),
        (t!("description"), tournament.description.clone()),
        (t!("open_signup"), tournament.open_signup.to_string()),
        (
            t!("hold_third_place_match"),
            tournament.hold_third_place_match.to_string(),
        ),
        (
            t!("pts_for_match_win"),
            tournament.swiss_points.match_win.to_string(),
        ),
        (
            t!("pts_for_match_tie"),
            tournament.swiss_points.match_tie.to_string(),
        ),
        (
            t!("pts_for_game_win"),
            tournament.swiss_points.game_win.to_string(),
        ),
        (
            t!("pts_for_game_tie"),
            tournament.swiss_points.game_tie.to_string(),
        ),
        (t!("swiss_rounds"), tournament.swiss_rounds.to_string()),
        (t!("ranked_by"), tournament.ranked_by.to_string()),
        (
            t!("rr_pts_for_match_win"),
            tournament.round_robin_points.match_win.to_string(),
        ),
        (
            t!("rr_pts_for_match_tie"),
            tournament.round_robin_points.match_tie.to_string(),
        ),
        (
            t!("rr_pts_for_game_win"),
            tournament.round_robin_points.game_win.to_string(),
        ),
        (
            t!("rr_pts_for_game_tie"),
            tournament.round_robin_points.game_tie.to_string(),
        ),
        (t!("show_rounds"), tournament.show_rounds.to_string()),
        (t!("private"), tournament.private.to_string()),
        (
            t!("notify_users_when_matches_open"),
            tournament.notify_users_when_matches_open.to_string(),
        ),
        (
            t!("notify_users_when_the_tournament_ends"),
            tournament.notify_users_when_the_tournament_ends.to_string(),
        ),
        (
            t!("sequential_pairings"),
            tournament.sequential_pairings.to_string(),
        ),
        (t!("signup_cap"), tournament.signup_cap.to_string()),
        (
            t!("check_in_duration"),
            tournament.check_in_duration.to_string(),
        ),
    ];
    if let Some(gfm) = tournament.grand_finals_modifier.as_ref() {
        params.push((t!("grand_finals_modifier"), gfm.clone()));
    }
    if let Some(start_at) = tournament.start_at.as_ref() {
        params.push((t!("start_at"), start_at.to_rfc3339()));
    }
    if let Some(s_bye_pts) = tournament.swiss_points.bye.as_ref() {
        params.push((t!("pts_for_bye"), s_bye_pts.to_string()));
    }
    if let Some(game) = tournament.game_name.as_ref() {
        params.push((t!("game_name"), game.clone()));
    }
    params
}

fn mu_to_pairs(mu: &MatchUpdate) -> FieldPairs {
    let mut params = Vec::new();

    if let Some(v) = mu.player1_votes {
        params.push((m!("player1_votes"), v.to_string()));
    }
    if let Some(v) = mu.player2_votes {
        params.push((m!("player2_votes"), v.to_string()));
    }
    params.push((m!("scores_csv"), mu.scores_csv.to_string()));
    if let Some(w) = mu.winner_id.as_ref() {
        params.push((m!("winner_id"), w.0.to_string()));
    }
    params
}

/// Client for the Challonge REST API.
pub struct Challonge {
    client: reqwest::blocking::Client,
}
impl Challonge {
    /// Create new connection to Challonge.
    /// # Example
    /// ```ignore
    /// extern crate challonge;
    ///
    /// use self::challonge::Challonge;
    ///
    /// let c = Challonge::new("myusername", "myapikey");
    /// ```
    pub fn new<S: Into<String>>(user_name: S, api_key: S) -> Challonge {
        Challonge {
            client: reqwest::blocking::Client::builder()
                .default_headers(make_headers(user_name.into(), api_key.into()))
                .build()
                .expect("Couldn't build the HTTP client."),
        }
    }

    /// Retrieve a set of tournaments created with your account.
    /// # Example
    /// ```ignore
    /// extern crate challonge;
    /// extern crate chrono;
    ///
    /// use self::challonge::Challonge;
    /// use self::challonge::tournament::{ TournamentState, TournamentType };
    /// use self::chrono::*;
    ///
    /// let c = Challonge::new("myusername", "myapikey");
    /// let index = c.tournament_index (
    ///        &TournamentState::All,
    ///        &TournamentType::DoubleElimination,
    ///        &Local::today(),
    ///        &Local::today(),
    ///        "subdomain"
    /// );
    /// ```
    pub fn tournament_index(
        &self,
        state: &TournamentState,
        tournament_type: &TournamentType,
        created_after: &Date<Local>,
        created_before: &Date<Local>,
        subdomain: &str,
    ) -> Result<TournamentIndex, Error> {
        let url = format!(
            "{}/tournaments.json?state={}&type={}&created_after={}&created_before={}&subdomain={}",
            API_BASE,
            state,
            tournament_type.to_get_param(),
            format_date!(created_after),
            format_date!(created_before),
            subdomain
        );

        let response = self.client.get(&url).send()?;
        TournamentIndex::decode(serde_json::from_reader(response)?)
    }

    /// Retrieve a single tournament record created with your account.
    /// # Example
    /// ```ignore
    /// extern crate challonge;
    ///
    /// use challonge::Challonge;
    ///
    /// let c = Challonge::new("myusername", "myapikey");
    /// let i = TournamentIncludes::Matches;
    /// let t = c.get_tournament(&TournamentId::Id(2669881), &i);
    /// ```
    pub fn get_tournament(
        &self,
        id: &TournamentId,
        includes: &TournamentIncludes,
    ) -> Result<Tournament, Error> {
        let mut url =
            reqwest::Url::parse(&format!("{}/tournaments/{}.json", API_BASE, id.to_string()))
                .unwrap();

        Challonge::add_tournament_includes(&mut url, includes);
        let response = self.client.get(url).send()?;
        Tournament::decode(serde_json::from_reader(response)?)
    }

    /// Create a new tournament.
    /// # Example
    /// ```ignore
    /// extern crate challonge;
    ///
    /// use challonge::Challonge;
    /// use challonge::tournament::TournamentCreate;
    ///
    /// let c = Challonge::new("myusername", "myapikey");
    /// let tc = TournamentCreate { // explicitly define the whole structure
    ///            name: "Tester".to_owned(),
    ///            tournament_type: TournamentType::SingleElimination,
    ///            url: "testerurl".to_owned(),
    ///            subdomain: "subdomain".to_owned(),
    ///            description: "Test tournament created from challonge-rs".to_owned(),
    ///            open_signup: false,
    ///            hold_third_place_match: false,
    ///            pts_for_match_win: 0.0f64,
    ///            pts_for_match_tie: 0.0f64,
    ///            pts_for_game_win: 0.0f64,
    ///            pts_for_game_tie: 0.0f64,
    ///            pts_for_bye: 0.0f64,
    ///            swiss_rounds: 0,
    ///            ranked_by: RankedBy::PointsScored,
    ///            rr_pts_for_match_win: 0.0f64,
    ///            rr_pts_for_match_tie: 0.0f64,
    ///            rr_pts_for_game_win: 0.0f64,
    ///            rr_pts_for_game_tie: 0.0f64,
    ///            show_rounds: false,
    ///            private: false,
    ///            notify_users_when_matches_open: true,
    ///            notify_users_when_the_tournament_ends: true,
    ///            sequential_pairings: false,
    ///            signup_cap: 4,
    ///            start_at: UTC::now().add(Duration::weeks(2)),
    ///            check_in_duration: 60,
    ///            grand_finals_modifier: None,
    /// };
    /// let t = c.create_tournament(&tc);
    /// // or you may create `TournamentCreate` by using a builder:
    /// let mut tcb = TournamentCreate::new();
    /// tcb.name("Test tournament")
    ///   .tournament_type(TournamentType::SingleElimination)
    ///   .url("TestUrl")
    ///   .subdomain("subdomain")
    ///   .description("TEST TOURNAMENT created by challonge-rs");
    /// let tb = c.create_tournament(&tcb);
    /// ```
    pub fn create_tournament(&self, tournament: &TournamentCreate) -> Result<Tournament, Error> {
        let url = &format!("{}/tournaments.json", API_BASE);
        let body = pairs_to_string(tc_to_pairs(tournament));
        let response = self.client.post(url).body(body).send()?;
        Tournament::decode(serde_json::from_reader(response)?)
    }

    /// Update a tournament's attributes.
    pub fn update_tournament(
        &self,
        id: &TournamentId,
        tournament: &TournamentCreate,
    ) -> Result<Tournament, Error> {
        let url = &format!("{}/tournaments/{}.json", API_BASE, id.to_string());
        let body = pairs_to_string(tc_to_pairs(tournament));
        let response = self.client.put(url).body(body).send()?;
        Tournament::decode(serde_json::from_reader(response)?)
    }

    /// Deletes a tournament along with all its associated records. There is no undo, so use with care!
    pub fn delete_tournament(&self, id: &TournamentId) -> Result<(), Error> {
        let url = &format!("{}/tournaments/{}.json", API_BASE, id.to_string());
        let _ = self.client.delete(url).send()?;
        Ok(())
    }

    /// This should be invoked after a tournament's check-in window closes before the tournament is started.
    ///
    /// 1. Marks participants who have not checked in as inactive.
    /// 2. Moves inactive participants to bottom seeds (ordered by original seed).
    /// 3. Transitions the tournament state from 'checking_in' to 'checked_in'
    ///
    /// NOTE: Checked in participants on the waiting list will be promoted if slots become available.
    pub fn tournament_process_checkins(
        &self,
        id: &TournamentId,
        includes: &TournamentIncludes,
    ) -> Result<(), Error> {
        self.tournament_action("process_check_ins", id, includes)
    }

    /// When your tournament is in a 'checking_in' or 'checked_in' state, there's no way to edit the tournament's start time (start_at) or check-in duration (check_in_duration). You must first abort check-in, then you may edit those attributes.
    ///
    /// 1. Makes all participants active and clears their checked_in_at times.
    /// 2. Transitions the tournament state from 'checking_in' or 'checked_in' to 'pending'
    pub fn tournament_abort_checkins(
        &self,
        id: &TournamentId,
        includes: &TournamentIncludes,
    ) -> Result<(), Error> {
        self.tournament_action("abort_check_in", id, includes)
    }

    /// Start a tournament, opening up first round matches for score reporting. The tournament must have at least 2 participants.
    pub fn tournament_start(
        &self,
        id: &TournamentId,
        includes: &TournamentIncludes,
    ) -> Result<(), Error> {
        self.tournament_action("start", id, includes)
    }

    /// Finalize a tournament that has had all match scores submitted, rendering its results permanent.
    pub fn tournament_finalize(
        &self,
        id: &TournamentId,
        includes: &TournamentIncludes,
    ) -> Result<(), Error> {
        self.tournament_action("finalize", id, includes)
    }

    /// Reset a tournament, clearing all of its scores and attachments. You can then add/remove/edit participants before starting the tournament again.
    pub fn tournament_reset(
        &self,
        id: &TournamentId,
        includes: &TournamentIncludes,
    ) -> Result<(), Error> {
        self.tournament_action("reset", id, includes)
    }

    /// Retrieve a tournament's participant list.
    pub fn participant_index(&self, id: &TournamentId) -> Result<ParticipantIndex, Error> {
        let url = &format!(
            "{}/tournaments/{}/participants.json",
            API_BASE,
            id.to_string()
        );
        let response = self.client.get(url).send()?;
        ParticipantIndex::decode(serde_json::from_reader(response)?)
    }

    /// Add a participant to a tournament (up until it is started).
    pub fn create_participant(
        &self,
        id: &TournamentId,
        participant: &ParticipantCreate,
    ) -> Result<Participant, Error> {
        let url = &format!(
            "{}/tournaments/{}/participants.json",
            API_BASE,
            id.to_string()
        );
        let body = pairs_to_string(pc_to_pairs(participant));
        let response = self.client.post(url).body(body).send()?;
        Participant::decode(serde_json::from_reader(response)?)
    }

    /// Bulk add participants to a tournament (up until it is started).
    /// If an invalid participant is detected, bulk participant creation will halt and any previously added participants (from this API request) will be rolled back.
    pub fn create_participant_bulk(
        &self,
        id: &TournamentId,
        participants: Vec<ParticipantCreate>,
    ) -> Result<(), Error> {
        let url = &format!(
            "{}/tournaments/{}/participants/bulk_add.json",
            API_BASE,
            id.to_string()
        );
        let body = pairs_to_string(pcs_to_pairs(participants));
        let response = self.client.post(url).body(body).send()?;
        let _: () = serde_json::from_reader(response)?;
        Ok(())
    }

    /// Retrieve a single participant record for a tournament.
    pub fn get_participant(
        &self,
        id: &TournamentId,
        participant_id: &ParticipantId,
        include_matches: bool,
    ) -> Result<Participant, Error> {
        let mut url = reqwest::Url::parse(&format!(
            "{}/tournaments/{}/participants/{}.json",
            API_BASE,
            id.to_string(),
            participant_id.0
        ))
        .unwrap();

        url.query_pairs_mut()
            .append_pair("include_matches", &(include_matches as i64).to_string());

        let response = self.client.get(url).send()?;
        Participant::decode(serde_json::from_reader(response)?)
    }

    /// Update the attributes of a tournament participant.
    pub fn update_participant(
        &self,
        id: &TournamentId,
        participant_id: &ParticipantId,
        participant: &ParticipantCreate,
    ) -> Result<(), Error> {
        let url = &format!(
            "{}/tournaments/{}/participants/{}.json",
            API_BASE,
            id.to_string(),
            participant_id.0
        );
        let body = pairs_to_string(pc_to_pairs(participant));
        let _ = self.client.put(url).body(body).send()?;
        Ok(())
    }

    /// Checks a participant in, setting checked_in_at to the current time.
    pub fn check_in_participant(
        &self,
        id: &TournamentId,
        participant_id: &ParticipantId,
    ) -> Result<(), Error> {
        let url = &format!(
            "{}/tournaments/{}/participants/{}/check_in.json",
            API_BASE,
            id.to_string(),
            participant_id.0
        );
        let _ = self.client.post(url).send()?;
        Ok(())
    }

    /// Marks a participant as having not checked in, setting checked_in_at to nil.
    pub fn undo_check_in_participant(
        &self,
        id: &TournamentId,
        participant_id: &ParticipantId,
    ) -> Result<(), Error> {
        let url = &format!(
            "{}/tournaments/{}/participants/{}/undo_check_in.json",
            API_BASE,
            id.to_string(),
            participant_id.0
        );
        let _ = self.client.post(url).send()?;
        Ok(())
    }

    /// If the tournament has not started, delete a participant, automatically filling in the abandoned seed number.
    /// If tournament is underway, mark a participant inactive, automatically forfeiting his/her remaining matches.
    pub fn delete_participant(
        &self,
        id: &TournamentId,
        participant_id: &ParticipantId,
    ) -> Result<(), Error> {
        let url = &format!(
            "{}/tournaments/{}/participants/{}.json",
            API_BASE,
            id.to_string(),
            participant_id.0
        );
        let _ = self.client.delete(url).send()?;
        Ok(())
    }

    /// Randomize seeds among participants. Only applicable before a tournament has started.
    pub fn randomize_participants(&self, id: &TournamentId) -> Result<(), Error> {
        let url = &format!(
            "{}/tournaments/{}/participants/randomize.json",
            API_BASE,
            id.to_string()
        );
        let _ = self.client.post(url).send()?;
        Ok(())
    }

    /// Retrieve a tournament's match list.
    pub fn match_index(
        &self,
        id: &TournamentId,
        state: Option<MatchState>,
        participant_id: Option<ParticipantId>,
    ) -> Result<MatchIndex, Error> {
        let mut url = reqwest::Url::parse(&format!(
            "{}/tournaments/{}/matches.json",
            API_BASE,
            id.to_string()
        ))
        .unwrap();
        {
            let mut pairs = url.query_pairs_mut();
            if let Some(s) = state {
                pairs.append_pair("state", &s.to_string());
            }
            if let Some(pid) = participant_id {
                pairs.append_pair("participant_id", &pid.0.to_string());
            }
        }
        let response = self.client.get(url.as_str()).send()?;
        MatchIndex::decode(serde_json::from_reader(response)?)
    }

    /// Retrieve a single match record for a tournament.
    pub fn get_match(
        &self,
        id: &TournamentId,
        match_id: &MatchId,
        include_attachments: bool,
    ) -> Result<Match, Error> {
        let mut url = reqwest::Url::parse(&format!(
            "{}/tournaments/{}/matches/{}.json",
            API_BASE,
            id.to_string(),
            match_id.0
        ))
        .unwrap();

        url.query_pairs_mut().append_pair(
            "include_attachments",
            &(include_attachments as i64).to_string(),
        );

        let response = self.client.get(url.as_str()).send()?;

        Match::decode(serde_json::from_reader(response)?)
    }

    /// Update/submit the score(s) for a match.
    pub fn update_match(
        &self,
        id: &TournamentId,
        match_id: &MatchId,
        match_update: &MatchUpdate,
    ) -> Result<Match, Error> {
        let url = &format!(
            "{}/tournaments/{}/matches/{}.json",
            API_BASE,
            id.to_string(),
            match_id.0
        );
        let body = pairs_to_string(mu_to_pairs(match_update));
        let response = self.client.put(url).body(body).send()?;
        Match::decode(serde_json::from_reader(response)?)
    }

    /// Retrieve a match's attachments.
    pub fn attachments_index(
        &self,
        id: &TournamentId,
        match_id: &MatchId,
    ) -> Result<AttachmentIndex, Error> {
        let url = &format!(
            "{}/tournaments/{}/matches/{}/attachments.json",
            API_BASE,
            id.to_string(),
            match_id.0
        );
        let response = self.client.get(url).send()?;
        AttachmentIndex::decode(serde_json::from_reader(response)?)
    }

    /// Retrieve a single match attachment record.
    pub fn get_attachment(
        &self,
        id: &TournamentId,
        match_id: &MatchId,
        attachment_id: &AttachmentId,
    ) -> Result<Attachment, Error> {
        let url = &format!(
            "{}/tournaments/{}/matches/{}/attachments/{}.json",
            API_BASE,
            id.to_string(),
            match_id.0,
            attachment_id.0
        );
        let response = self.client.get(url).send()?;
        Attachment::decode(serde_json::from_reader(response)?)
    }

    /// Add a file, link, or text attachment to a match. NOTE: The associated tournament's "accept_attachments" attribute must be true for this action to succeed.
    pub fn create_attachment(
        &self,
        id: &TournamentId,
        match_id: &MatchId,
        attachment: &AttachmentCreate,
    ) -> Result<Attachment, Error> {
        let url = &format!(
            "{}/tournaments/{}/matches/{}/attachments.json",
            API_BASE,
            id.to_string(),
            match_id.0
        );
        let body = pairs_to_string(at_to_pairs(attachment));
        let response = self.client.post(url).body(body).send()?;
        Attachment::decode(serde_json::from_reader(response)?)
    }

    /// Update the attributes of a match attachment.
    pub fn update_attachment(
        &self,
        id: &TournamentId,
        match_id: &MatchId,
        attachment_id: &AttachmentId,
        attachment: &AttachmentCreate,
    ) -> Result<Attachment, Error> {
        let url = &format!(
            "{}/tournaments/{}/matches/{}/attachments/{}.json",
            API_BASE,
            id.to_string(),
            match_id.0,
            attachment_id.0
        );
        let body = pairs_to_string(at_to_pairs(attachment));
        let response = self.client.put(url).body(body).send()?;
        Attachment::decode(serde_json::from_reader(response)?)
    }

    /// Delete a match attachment.
    pub fn delete_attachment(
        &self,
        id: &TournamentId,
        match_id: &MatchId,
        attachment_id: &AttachmentId,
    ) -> Result<(), Error> {
        let url = &format!(
            "{}/tournaments/{}/matches/{}/attachments/{}.json",
            API_BASE,
            id.to_string(),
            match_id.0,
            attachment_id.0
        );
        let _ = self.client.delete(url).send()?;
        Ok(())
    }

    fn tournament_action(
        &self,
        endpoint: &str,
        id: &TournamentId,
        includes: &TournamentIncludes,
    ) -> Result<(), Error> {
        let mut url = reqwest::Url::parse(&format!(
            "{}/tournaments/{}/{}.json",
            API_BASE,
            id.to_string(),
            endpoint
        ))
        .unwrap();
        Challonge::add_tournament_includes(&mut url, includes);
        let _ = self.client.post(url.as_str()).send()?;
        Ok(())
    }

    // TODO refactor to be better
    fn add_tournament_includes(url: &mut reqwest::Url, includes: &TournamentIncludes) {
        let mut pairs = url.query_pairs_mut();
        match *includes {
            TournamentIncludes::All => {
                pairs
                    .append_pair("include_participants", "1")
                    .append_pair("include_matches", "1");
            }
            TournamentIncludes::Matches => {
                pairs
                    .append_pair("include_participants", "0")
                    .append_pair("include_matches", "1");
            }
            TournamentIncludes::Participants => {
                pairs
                    .append_pair("include_participants", "1")
                    .append_pair("include_matches", "0");
            }
        }
    }
}