package Pear::LocalLoop::Schema::Result::Leaderboard;

use strict;
use warnings;

use base 'DBIx::Class::Core';

use DateTime;

__PACKAGE__->table("leaderboards");

__PACKAGE__->add_columns(
  "id" => {
    data_type => "integer",
    is_auto_increment => 1,
    is_nullable => 0,
  },
  "name" => {
    data_type => "varchar",
    size => 255,
    is_nullable => 0,
  },
  "type" => {
    data_type => "varchar",
    size => 255,
    is_nullable => 0,
  },
);

__PACKAGE__->set_primary_key("id");

__PACKAGE__->add_unique_constraint(["type"]);

__PACKAGE__->has_many(
  "sets",
  "Pear::LocalLoop::Schema::Result::LeaderboardSet",
  { "foreign.leaderboard_id" => "self.id" },
  { cascade_copy => 0, cascade_delete => 0 },
);

sub create_new {
  my $self = shift;
  my $start = shift;

  my $type = $self->type;

  if ( $type eq 'daily_total' ) {
    return $self->_create_total_set( $start, $start->clone->add( days => 1 ) );
  } elsif ( $type eq 'weekly_total' ) {
    return $self->_create_total_set( $start, $start->clone->add( days => 7 ) );
  } elsif ( $type eq 'monthly_total' ) {
    return $self->_create_total_set( $start, $start->clone->add( months => 1 ) );
  } elsif ( $type eq 'all_time_total' ) {
    return $self->_create_total_all_time;
  } elsif ( $type eq 'daily_count' ) {
    return $self->_create_count_set( $start, $start->clone->add( days => 1 ) );
  } elsif ( $type eq 'weekly_count' ) {
    return $self->_create_count_set( $start, $start->clone->add( days => 7 ) );
  } elsif ( $type eq 'monthly_count' ) {
    return $self->_create_count_set( $start, $start->clone->add( months => 1 ) );
  } elsif ( $type eq 'all_time_count' ) {
    return $self->_create_count_all_time;
  }
  warn "Unrecognised type";
  return $self;
}

sub _create_total_set {
  my ( $self, $start, $end ) = @_;

  my $schema = $self->result_source->schema;

  my $user_rs = $schema->resultset('User');

  my @leaderboard;

  while ( my $user_result = $user_rs->next ) {
    my $transaction_rs = $user_result->transactions->search_between( $start, $end );

    my $transaction_sum = $transaction_rs->get_column('value')->sum;

    push @leaderboard, {
      user_id => $user_result->id,
      value => $transaction_sum || 0,
    };
  }

  $self->create_related(
    'sets',
    {
      date => $start,
      values => \@leaderboard,
    },
  );

  return $self;
}

sub _create_count_set {
  my ( $self, $start, $end ) = @_;

  my $schema = $self->result_source->schema;

  my $user_rs = $schema->resultset('User');

  my @leaderboard;

  while ( my $user_result = $user_rs->next ) {
    my $transaction_rs = $user_result->transactions->search_between( $start, $end );

    my $transaction_count = $transaction_rs->count;

    push @leaderboard, {
      user_id => $user_result->id,
      value => $transaction_count || 0,
    };
  }

  $self->create_related(
    'sets',
    {
      date => $start,
      values => \@leaderboard,
    },
  );

  return $self;
}

sub _create_total_all_time {
  my ( $self ) = @_;

  my $schema = $self->result_source->schema;

  my $user_rs = $schema->resultset('User');
  
  my $end = DateTime->today;

  my @leaderboard;

  while ( my $user_result = $user_rs->next ) {
    my $transaction_rs = $user_result->transactions;

    my $transaction_sum = $transaction_rs->get_column('value')->sum;

    push @leaderboard, {
      user_id => $user_result->id,
      value => $transaction_sum || 0,
    };
  }

  $self->create_related(
    'sets',
    {
      date => $end,
      values => \@leaderboard,
    },
  );

  return $self;
}

sub _create_count_all_time {
  my ( $self ) = @_;

  my $schema = $self->result_source->schema;

  my $user_rs = $schema->resultset('User');

  my $end = DateTime->today;

  my @leaderboard;

  while ( my $user_result = $user_rs->next ) {
    my $transaction_rs = $user_result->transactions;

    my $transaction_count = $transaction_rs->count;

    push @leaderboard, {
      user_id => $user_result->id,
      value => $transaction_count || 0,
    };
  }

  $self->create_related(
    'sets',
    {
      date => $end,
      values => \@leaderboard,
    },
  );

  return $self;
}

sub get_latest {
  my $self = shift;

  return $self;
}

1;