use diesel::{result::Error, *};
use lemmy_db_queries::{
  aggregates::person_aggregates::PersonAggregates,
  ToSafe,
  ToSafeSettings,
};
use lemmy_db_schema::{
  schema::{person, person_aggregates, local_user},
  source::person::{PersonSafe, Person},
  source::local_user::{LocalUser, LocalUserSettings},
};
use serde::Serialize;

#[derive(Debug, Serialize, Clone)]
pub struct LocalUserView {
  pub person: Person,
  pub counts: PersonAggregates,
  pub local_user: LocalUser,
}

type LocalUserViewTuple = (Person, PersonAggregates, LocalUser);

impl LocalUserView {
  pub fn read(conn: &PgConnection, person_id: i32) -> Result<Self, Error> {
    let (person, counts, local_user) = person::table
      .find(person_id)
      .inner_join(person_aggregates::table)
      .inner_join(local_user::table)
      .select((person::all_columns, person_aggregates::all_columns, local_user::all_columns))
      .first::<LocalUserViewTuple>(conn)?;
    Ok(Self { person, counts, local_user })
  }

  // TODO check where this is used
  pub fn read_from_name(conn: &PgConnection, name: &str) -> Result<Self, Error> {
    let (person, counts, local_user) = person::table
      .filter(person::name.eq(name))
      .inner_join(person_aggregates::table)
      .inner_join(local_user::table)
      .select((person::all_columns, person_aggregates::all_columns, local_user::all_columns))
      .first::<LocalUserViewTuple>(conn)?;
    Ok(Self { person, counts, local_user })
  }

  pub fn find_by_email_or_name(
    conn: &PgConnection,
    name_or_email: &str,
  ) -> Result<Self, Error> {
    let (person, counts, local_user) = person::table
      .inner_join(person_aggregates::table)
      .inner_join(local_user::table)
      .filter(person::name.ilike(name_or_email).or(local_user::email.ilike(name_or_email)))
      .select((person::all_columns, person_aggregates::all_columns, local_user::all_columns))
      .first::<LocalUserViewTuple>(conn)?;
    Ok(Self { person, counts, local_user })
  }
}

#[derive(Debug, Serialize, Clone)]
pub struct LocalUserSettingsView {
  pub person: PersonSafe,
  pub counts: PersonAggregates,
  pub local_user: LocalUserSettings,
}

type LocalUserSettingsViewTuple = (PersonSafe, PersonAggregates, LocalUserSettings);

impl LocalUserSettingsView {
  pub fn read(conn: &PgConnection, person_id: i32) -> Result<Self, Error> {
    let (person, counts, local_user) = person::table
      .find(person_id)
      .inner_join(person_aggregates::table)
      .inner_join(local_user::table)
      .select((Person::safe_columns_tuple(), person_aggregates::all_columns, LocalUser::safe_settings_columns_tuple()))
      .first::<LocalUserSettingsViewTuple>(conn)?;
    Ok(Self { person, counts, local_user })
  }
}