<?php

declare(strict_types=1);

namespace App\Models;

use App\Traits\HasCompositePrimaryKey;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;

class DailyChange extends Model
{
    use HasCompositePrimaryKey, HasFactory;

    public $timestamps = false;

    protected $primaryKey = ['date', 'portfolio_id'];

    protected $table = 'daily_change';

    protected $fillable = [
        'portfolio_id',
        'date',
        'total_market_value',
        'notes',
    ];

    protected $hidden = [];

    protected $casts = [
        'date' => 'datetime',
        'total_market_value' => 'float',
        'total_cost_basis' => 'float',
        'total_gain' => 'float',
        'realized_gain_dollars' => 'float',
        'total_dividends_earned' => 'float',
    ];

    public function scopePortfolio($query, $portfolio)
    {
        return $query->where('daily_change.portfolio_id', $portfolio);
    }

    public function scopeMyDailyChanges()
    {
        return $this->whereHas('portfolio', function ($query) {
            $query->whereHas('users', function ($query) {
                return $query->where('id', auth()->id());
            });
        });
    }

    public function scopeWithoutWishlists($query)
    {
        return $query->whereHas('portfolio', function ($query) {
            $query->where('portfolios.wishlist', 0);
        });
    }

    public function scopeWithDailyPerformance($query)
    {
        $currency = auth()->user()?->getCurrency() ?? config('investbrain.base_currency');

        $dividendSub = DB::table('holdings')
            ->join('dividends', 'dividends.symbol', '=', 'holdings.symbol')
            ->leftJoin('currency_rates as cr', function ($join) use ($currency) {
                $join->on(DB::raw('DATE(cr.date)'), '=', DB::raw('DATE(dividends.date)'))
                    ->where('cr.currency', '=', $currency);
            })
            ->join('transactions as tx', function ($join) {
                $join->on('tx.symbol', '=', 'holdings.symbol')
                    ->on('tx.portfolio_id', '=', 'holdings.portfolio_id')
                    ->whereColumn('tx.date', '<=', 'dividends.date');
            })
            ->select(['holdings.portfolio_id', 'dividends.date'])
            ->selectRaw("
                ((CASE WHEN tx.transaction_type = 'BUY'
                    THEN tx.quantity ELSE 0 END)
                - (CASE WHEN tx.transaction_type = 'SELL'
                    THEN tx.quantity ELSE 0 END))
                * SUM(
                    dividends.dividend_amount_base
                    * COALESCE(cr.rate, 1)
                )
                AS total_dividends_earned")
            ->groupBy(['holdings.portfolio_id', 'dividends.date', 'tx.transaction_type', 'tx.quantity']);

        $costBasisSub = DB::table('transactions')
            ->leftJoin('currency_rates as cr', function ($join) use ($currency) {
                $join->on(DB::raw('DATE(cr.date)'), '=', DB::raw('DATE(transactions.date)'))
                    ->where('cr.currency', $currency);
            })
            ->select(['transactions.portfolio_id', 'transactions.date']);

        return $query
            ->select(['daily_change.date', 'daily_change.portfolio_id'])
            ->selectRaw('daily_change.total_market_value * COALESCE(cr.rate, 1) AS total_market_value')
            ->leftJoin('currency_rates as cr', function ($join) use ($currency) {
                $join->on(DB::raw('DATE(cr.date)'), '=', DB::raw('DATE(daily_change.date)'))
                    ->where('cr.currency', '=', $currency);
            })
            ->selectSub(function ($query) use ($costBasisSub) {
                $query->fromSub(
                    $costBasisSub->selectRaw("
                    (CASE 
                        WHEN transactions.transaction_type = 'BUY' 
                        THEN 1 ELSE -1 END
                    ) * transactions.cost_basis_base * transactions.quantity * COALESCE(cr.rate, 1) AS total_cost_basis"),
                    'cb')
                    ->selectRaw('SUM(cb.total_cost_basis)')
                    ->whereColumn('cb.date', '<=', 'daily_change.date')
                    ->whereColumn('cb.portfolio_id', '=', 'daily_change.portfolio_id');
            }, 'total_cost_basis')
            ->selectSub(function ($query) use ($costBasisSub) {
                $query->fromSub(
                    $costBasisSub->selectRaw("
                    (CASE 
                        WHEN transactions.transaction_type = 'SELL' 
                        THEN transactions.sale_price_base - transactions.cost_basis_base
                        END
                    ) * transactions.quantity * COALESCE(cr.rate, 1) AS realized_gain_dollars"),
                    'cb')
                    ->selectRaw('SUM(cb.realized_gain_dollars)')
                    ->whereColumn('cb.date', '<=', 'daily_change.date')
                    ->whereColumn('cb.portfolio_id', '=', 'daily_change.portfolio_id');
            }, 'realized_gain_dollars')
            ->selectSub(function ($query) use ($dividendSub) {  // todo: maybe costbasis uses this model?
                $query->fromSub($dividendSub, 'd')
                    ->selectRaw('SUM(d.total_dividends_earned)')
                    ->whereColumn('d.date', '<=', 'daily_change.date')
                    ->whereColumn('d.portfolio_id', '=', 'daily_change.portfolio_id');
            }, 'total_dividends_earned')
            ->addSelect('annotation')
            ->orderBy('daily_change.date');
    }

    public function scopeGetDailyPerformance($query)
    {
        return $query->get()
            ->sortBy('date')
            ->groupBy('date')
            ->map(function ($group) {

                $total_market_value = $group->sum('total_market_value');
                $total_cost_basis = $group->sum('total_cost_basis');
                $total_market_gain = $total_market_value - $total_cost_basis;

                return (object) [
                    'date' => $group->first()->date->toDateString(),
                    'total_market_value' => $total_market_value,
                    'total_cost_basis' => $total_cost_basis,
                    'total_gain' => $total_market_gain,
                    'realized_gain_dollars' => $group->sum('realized_gain_dollars'),
                    'total_dividends_earned' => $group->sum('total_dividends_earned'),
                ];
            })
            ->values();
    }

    public function portfolio()
    {
        return $this->belongsTo(Portfolio::class);
    }
}