discord-bot/src/common/set_roles.rs

pub mod normal {
  use crate::common::database::{DataBase, ServerMembersWolves, Servers, Wolves};
  use crate::get_now_iso;
  use serenity::client::Context;
  use serenity::model::id::{GuildId, RoleId, UserId};
  use sqlx::{Pool, Sqlite};

  pub async fn update_server(ctx: &Context, server: &Servers, remove_roles: &[Option<RoleId>], members_changed: &[UserId]) {
    let db_lock = {
      let data_read = ctx.data.read().await;
      data_read.get::<DataBase>().expect("Expected Database in TypeMap.").clone()
    };

    let db = db_lock.read().await;

    let Servers {
      server,
      role_past,
      role_current,
      ..
    } = server;

    let mut roles_set = [0, 0, 0];
    let mut members = vec![];

    for member in get_server_member_bulk(&db, server).await {
      if let Some(x) = member.discord {
        members.push(x);
      }
    }
    let mut members_all = members.len();

    if let Ok(x) = server.members(ctx, None, None).await {
      for mut member in x {
        // members_changed acts as an override to only deal with teh users in it
        if !members_changed.is_empty() && !members_changed.contains(&member.user.id) {
          continue;
        }

        if members.contains(&member.user.id) {
          let mut roles = vec![];

          if let Some(role) = &role_past {
            if !member.roles.contains(role) {
              roles_set[0] += 1;
              roles.push(role.to_owned());
            }
          }

          if !member.roles.contains(role_current) {
            roles_set[1] += 1;
            roles.push(role_current.to_owned());
          }

          if let Err(e) = member.add_roles(ctx, &roles).await {
            println!("{:?}", e);
          }
        } else {
          // old and never

          if let Some(role) = &role_past {
            if member.roles.contains(role) {
              members_all += 1;
            }
          }

          if member.roles.contains(role_current) {
            roles_set[2] += 1;
            // if theya re not a current member and have the role then remove it
            if let Err(e) = member.remove_role(ctx, role_current).await {
              println!("{:?}", e);
            }
          }
        }
        for role in remove_roles.iter().flatten() {
          if let Err(e) = member.remove_role(ctx, role).await {
            println!("{:?}", e);
          }
        }
      }
    }

    set_server_numbers(&db, server, members_all as i64, members.len() as i64).await;

    // small bit of logging to note changes over time
    println!("{:?} Changes: New: +{}, Current: +{}/-{}", server.as_u64(), roles_set[0], roles_set[1], roles_set[2]);
  }

  pub async fn get_server_member_bulk(db: &Pool<Sqlite>, server: &GuildId) -> Vec<ServerMembersWolves> {
    sqlx::query_as::<_, ServerMembersWolves>(
      r#"
      SELECT * 
      FROM server_members
      JOIN wolves USING (id_wolves)
      WHERE (
        server = ? 
        AND discord IS NOT NULL
        AND expiry > ?
      )
      "#,
    )
    .bind(*server.as_u64() as i64)
    .bind(get_now_iso(true))
    .fetch_all(db)
    .await
    .unwrap_or_default()
  }

  async fn set_server_numbers(db: &Pool<Sqlite>, server: &GuildId, past: i64, current: i64) {
    match sqlx::query_as::<_, Wolves>(
      "
      UPDATE servers
      SET member_past = ?, member_current = ?
      WHERE server = ?
    ",
    )
    .bind(past)
    .bind(current)
    .bind(*server.as_u64() as i64)
    .fetch_optional(db)
    .await
    {
      Ok(_) => {}
      Err(e) => {
        println!("Failure to insert into {}", server.as_u64());
        println!("{:?}", e);
      }
    }
  }
}

// for updating committee members
pub mod committee {
  use crate::common::database::{DataBase, Wolves};
  use crate::common::wolves::committees::Committees;
  use crate::Config;
  use serenity::client::Context;
  use serenity::model::guild::Member;
  use sqlx::{Pool, Sqlite};
  use std::collections::HashMap;
  use std::sync::Arc;

  pub async fn check_committee(ctx: Arc<Context>) {
    let db_lock = {
      let data_read = ctx.data.read().await;
      data_read.get::<DataBase>().expect("Expected Config in TypeMap.").clone()
    };

    let db = db_lock.read().await;

    let config_lock = {
      let data_read = ctx.data.read().await;
      data_read.get::<Config>().expect("Expected Config in TypeMap.").clone()
    };
    let config_global = config_lock.read().await;

    let server = config_global.committee_server;

    // because to use it to update a single user we need to pre-get the members of teh server
    let mut members = server.members(&ctx, None, None).await.unwrap_or_default();

    update_committees(&db, &ctx, &config_global, &mut members).await;
  }

  /**
    This function can take a vec of members (or just one) and gives tehm the appropiate roles on teh committee server
  */
  pub async fn update_committees(db: &Pool<Sqlite>, ctx: &Context, config: &Config, members: &mut Vec<Member>) {
    let server = config.committee_server;
    let committee_member = config.committee_role;
    let committees = get_committees(db).await;

    // information about the server
    let roles = server.roles(&ctx).await.unwrap_or_default();

    // make a hashmap of the nameof roles to quickly get them out again
    let mut roles_name = HashMap::new();
    for role in roles.values() {
      roles_name.insert(role.name.to_owned(), role.to_owned());
    }

    // a map of users and the roles they are goign to be getting
    let mut users_roles = HashMap::new();

    // a list of all the roles that can be removed from folks who should have them
    let mut committee_roles = vec![committee_member];

    for committee in &committees {
      // get the role for this committee/club/soc
      let role = match roles_name.get(&committee.name) {
        Some(x) => Some(x.to_owned()),
        None => {
          // create teh role if it does not exist
          match server.create_role(&ctx, |r| r.hoist(false).mentionable(true).name(&committee.name)).await {
            Ok(x) => Some(x),
            Err(_) => None,
          }
        }
      };

      // so if the role exists
      if let Some(r) = role {
        committee_roles.push(r.id);

        for id_wolves in &committee.committee {
          // ID in this is the wolves ID, so we need to get a matching discord ID (if one exists)
          if let Some(x) = get_server_member_discord(db, id_wolves).await {
            if let Some(member_tmp) = x.discord {
              let values = users_roles.entry(member_tmp).or_insert(vec![]);
              values.push(r.id);
            }
          }
        }
      }
    }

    // now we have a map of all users that should get roles time to go through all the folks on teh server
    for member in members {
      let roles_required = match users_roles.get(&member.user.id) {
        None => {
          vec![]
        }
        Some(x) => {
          let mut combined = x.to_owned();
          // this is the main role, since it provides access to everything.
          combined.push(committee_member);
          combined
        }
      };

      // get a list of all the roles to remove from someone
      let mut roles_rem = vec![];
      for role in &committee_roles {
        if !roles_required.contains(role) {
          roles_rem.push(role.to_owned());
        }
      }
      if !roles_rem.is_empty() {
        member.remove_roles(&ctx, &roles_rem).await.unwrap_or_default();
      }

      if !roles_required.is_empty() {
        // these roles are flavor roles, only there to make folks mentionable
        member.add_roles(&ctx, &roles_required).await.unwrap_or_default();
      }
    }
  }

  async fn get_committees(db: &Pool<Sqlite>) -> Vec<Committees> {
    sqlx::query_as::<_, Committees>(
      r#"
        SELECT *
        FROM committees
        "#,
    )
    .fetch_all(db)
    .await
    .unwrap_or_default()
  }

  async fn get_server_member_discord(db: &Pool<Sqlite>, user: &i64) -> Option<Wolves> {
    sqlx::query_as::<_, Wolves>(
      r#"
      SELECT * 
      FROM wolves
      WHERE id_wolves = ?
      "#,
    )
    .bind(user)
    .fetch_one(db)
    .await
    .ok()
  }
}