<?php
/**
 * Spacetraders mining fleet control page.
 *
 * @package  SpacetradersAPI
 * @author   Keith Solomon <keith@keithsolomon.net>
 * @license  MIT License
 * @version  GIT: <git_id>
 * @link     https://git.keithsolomon.net/keith/Spacetraders
 */

require_once __DIR__ . '/lib/spacetraders-api.php';
require_once __DIR__ . '/lib/spacetraders-storage.php';

/**
 * Filter only mining ships.
 *
 * @param array<int,array<string,mixed>> $ships
 *
 * @return array<int,array<string,mixed>>
 */
function filterMiningShips( array $ships ): array {
    return array_values(
        array_filter(
            $ships,
            static function ( array $ship ): bool {
                $role = strtoupper( (string) ( $ship['registration']['role'] ?? '' ) );
                return $role === 'EXCAVATOR';
            }
        )
    );
}

$config = require __DIR__ . '/lib/project-config.php';

$storage = new SpacetradersStorage( $config['db_path'] );
$token   = $storage->getAgentToken();

$statusMessage          = '';
$errorMessage           = '';
$actionResults          = array();
$agent                  = array();
$ships                  = array();
$miningShips            = array();
$activeContracts        = array();
$marketWaypoints        = array();
$selectedMarketWaypoint = '';

if (! is_string( $token ) || trim( $token ) === '' ) {
    $envToken = getenv( 'SPACETRADERS_TOKEN' );

    if (is_string( $envToken ) && trim( $envToken ) !== '' ) {
        $token = trim( $envToken );
        $storage->setAgentToken( $token );
    }
}

if (! is_string( $token ) || trim( $token ) === '' ) {
    $tokenError = 'No token found. Set one in config.php or SPACETRADERS_TOKEN.';
}

if (! isset( $tokenError ) ) {
    $client = new SpacetradersApi(
        trim( $token ),
        $config['api_base_url'],
        (int) $config['api_timeout'],
        $storage,
        (int) $config['cache_ttl']
    );
}

try {
    if (! isset( $tokenError ) ) {
        $agentResponse = $client->getMyAgent();
        $shipsResponse = $client->listMyShips();
        $contractsResponse = $client->listMyContracts();

        $agent = $agentResponse['data'] ?? $agentResponse;
        $ships = $shipsResponse['data'] ?? $shipsResponse;
        $contracts = $contractsResponse['data'] ?? $contractsResponse;
        $miningShips = filterMiningShips( $ships );
        $activeContracts = array_values(
            array_filter(
                (array) $contracts,
                static function ( array $contract ): bool {
                    return (bool) ( $contract['accepted'] ?? false ) && ! (bool) ( $contract['fulfilled'] ?? false );
                }
            )
        );

        $currentSystemSymbol = '';
        if (! empty( $miningShips ) && isset( $miningShips[0]['nav']['systemSymbol'] ) ) {
            $currentSystemSymbol = (string) $miningShips[0]['nav']['systemSymbol'];
        } elseif (! empty( $ships ) && isset( $ships[0]['nav']['systemSymbol'] ) ) {
            $currentSystemSymbol = (string) $ships[0]['nav']['systemSymbol'];
        } elseif (isset( $agent['headquarters'] ) && is_string( $agent['headquarters'] ) ) {
            $hqParts = explode( '-', $agent['headquarters'] );
            if (count( $hqParts ) >= 2 ) {
                $currentSystemSymbol = $hqParts[0] . '-' . $hqParts[1];
            }
        }

        if ($currentSystemSymbol !== '' ) {
            $page = 1;
            $total = 0;
            $waypoints = array();
            do {
                $waypointsResponse = $client->listWaypoints(
                    $currentSystemSymbol,
                    array(
                        'page'  => $page,
                        'limit' => 20,
                    )
                );
                $pageData = $waypointsResponse['data'] ?? array();
                if (! is_array( $pageData ) || empty( $pageData ) ) {
                    break;
                }

                $waypoints = array_merge( $waypoints, $pageData );
                $total = (int) ( $waypointsResponse['meta']['total'] ?? count( $waypoints ) );
                $page++;
            } while (count( $waypoints ) < $total);

            foreach ( $waypoints as $waypoint ) {
                foreach ( (array) ( $waypoint['traits'] ?? array() ) as $trait ) {
                    if ((string) ( $trait['symbol'] ?? '' ) === 'MARKETPLACE' ) {
                        $marketWaypoints[] = (string) ( $waypoint['symbol'] ?? '' );
                        break;
                    }
                }
            }
        }

        $selectedMarketWaypoint = isset( $_POST['market_waypoint'] ) ?
            trim( (string) $_POST['market_waypoint'] ) :
            ( $marketWaypoints[0] ?? '' );

        if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset( $_POST['fleet_action'] ) ) {
            $fleetAction = (string) $_POST['fleet_action'];
            $successCount = 0;

            foreach ( $miningShips as $fleetShip ) {
                $shipSymbol = (string) ( $fleetShip['symbol'] ?? '' );
                if ($shipSymbol === '' ) {
                    continue;
                }

                try {
                    $shipResponse = $client->getShip( $shipSymbol );
                    $shipData     = $shipResponse['data'] ?? array();
                    $shipStatus   = (string) ( $shipData['nav']['status'] ?? '' );
                    $waypointSymbol = (string) ( $shipData['nav']['waypointSymbol'] ?? '' );

                    if ($fleetAction === 'excavate_all' ) {
                        if ($shipStatus === 'IN_TRANSIT' ) {
                            $actionResults[] = $shipSymbol . ': skipped (in transit).';
                            continue;
                        }

                        if ($shipStatus === 'DOCKED' ) {
                            $client->orbitShip( $shipSymbol );
                        }

                        $client->extractResources( $shipSymbol );
                        $actionResults[] = $shipSymbol . ': extracting.';
                        $successCount++;
                    } elseif ($fleetAction === 'dock_refuel_all' ) {
                        if ($shipStatus === 'IN_TRANSIT' ) {
                            $actionResults[] = $shipSymbol . ': skipped (in transit).';
                            continue;
                        }

                        if ($shipStatus !== 'DOCKED' ) {
                            $client->dockShip( $shipSymbol );
                        }

                        $client->refuelShip( $shipSymbol );
                        $actionResults[] = $shipSymbol . ': docked/refueled.';
                        $successCount++;
                    } elseif ($fleetAction === 'move_and_sell_all' ) {
                        if ($selectedMarketWaypoint === '' ) {
                            $actionResults[] = $shipSymbol . ': no market waypoint selected.';
                            continue;
                        }

                        if ($shipStatus === 'IN_TRANSIT' ) {
                            $actionResults[] = $shipSymbol . ': already in transit.';
                            continue;
                        }

                        if ($waypointSymbol !== $selectedMarketWaypoint ) {
                            if ($shipStatus === 'DOCKED' ) {
                                $client->orbitShip( $shipSymbol );
                            }

                            $client->navigateShip( $shipSymbol, $selectedMarketWaypoint );
                            $actionResults[] = $shipSymbol . ': navigating to ' . $selectedMarketWaypoint . '.';
                            $successCount++;
                            continue;
                        }

                        if ($shipStatus !== 'DOCKED' ) {
                            $client->dockShip( $shipSymbol );
                        }

                        $inventory = (array) ( $shipData['cargo']['inventory'] ?? array() );
                        $soldItems = 0;
                        foreach ( $inventory as $item ) {
                            $tradeSymbol = (string) ( $item['symbol'] ?? '' );
                            $units = (int) ( $item['units'] ?? 0 );
                            if ($tradeSymbol === '' || $units <= 0 ) {
                                continue;
                            }

                            try {
                                $client->sellCargo( $shipSymbol, $tradeSymbol, $units );
                                $soldItems++;
                            } catch (SpacetradersApiException $e) {
                                // Ignore individual sell failures and continue.
                            }
                        }

                        $actionResults[] = $shipSymbol . ': sold ' . $soldItems . ' cargo item type(s).';
                        $successCount++;
                    } elseif ($fleetAction === 'sell_cargo_here_all' ) {
                        if ($shipStatus === 'IN_TRANSIT' ) {
                            $actionResults[] = $shipSymbol . ': skipped (in transit).';
                            continue;
                        }

                        if ($shipStatus !== 'DOCKED' ) {
                            $client->dockShip( $shipSymbol );
                        }

                        $inventory = (array) ( $shipData['cargo']['inventory'] ?? array() );
                        $soldItems = 0;
                        foreach ( $inventory as $item ) {
                            $tradeSymbol = (string) ( $item['symbol'] ?? '' );
                            $units = (int) ( $item['units'] ?? 0 );
                            if ($tradeSymbol === '' || $units <= 0 ) {
                                continue;
                            }

                            try {
                                $client->sellCargo( $shipSymbol, $tradeSymbol, $units );
                                $soldItems++;
                            } catch (SpacetradersApiException $e) {
                                // Continue selling other items.
                            }
                        }

                        $actionResults[] = $shipSymbol . ': sold ' . $soldItems . ' cargo item type(s) at current waypoint.';
                        $successCount++;
                    } elseif ($fleetAction === 'jettison_cargo_all' ) {
                        if ($shipStatus === 'IN_TRANSIT' ) {
                            $actionResults[] = $shipSymbol . ': skipped (in transit).';
                            continue;
                        }

                        $inventory = (array) ( $shipData['cargo']['inventory'] ?? array() );
                        $jettisonedItems = 0;
                        foreach ( $inventory as $item ) {
                            $tradeSymbol = (string) ( $item['symbol'] ?? '' );
                            $units = (int) ( $item['units'] ?? 0 );
                            if ($tradeSymbol === '' || $units <= 0 ) {
                                continue;
                            }

                            try {
                                $client->jettisonCargo( $shipSymbol, $tradeSymbol, $units );
                                $jettisonedItems++;
                            } catch (SpacetradersApiException $e) {
                                // Continue jettisoning other items.
                            }
                        }

                        $actionResults[] = $shipSymbol . ': jettisoned ' . $jettisonedItems . ' cargo item type(s).';
                        $successCount++;
                    }
                } catch (SpacetradersApiException $e) {
                    $actionResults[] = $shipSymbol . ': ' . $e->getMessage();
                }
            }

            if ($successCount > 0 ) {
                $storage->clearAllCache();
            }

            $statusMessage = 'Action complete for ' . $successCount . ' ship(s).';

            $shipsResponse = $client->listMyShips();
            $contractsResponse = $client->listMyContracts();
            $ships = $shipsResponse['data'] ?? $shipsResponse;
            $contracts = $contractsResponse['data'] ?? $contractsResponse;
            $miningShips = filterMiningShips( $ships );
            $activeContracts = array_values(
                array_filter(
                    (array) $contracts,
                    static function ( array $contract ): bool {
                        return (bool) ( $contract['accepted'] ?? false ) && ! (bool) ( $contract['fulfilled'] ?? false );
                    }
                )
            );
        }

        if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset( $_POST['ship_action'] ) && in_array( (string) $_POST['ship_action'], array( 'sell_ship_cargo', 'jettison_ship_cargo' ), true ) && isset( $_POST['ship_symbol'] )) {
            $shipAction = (string) $_POST['ship_action'];
            $sellShipSymbol = trim( (string) $_POST['ship_symbol'] );

            if ($sellShipSymbol !== '' ) {
                try {
                    $shipResponse = $client->getShip( $sellShipSymbol );
                    $shipData     = $shipResponse['data'] ?? array();
                    $shipStatus   = (string) ( $shipData['nav']['status'] ?? '' );

                    if ($shipStatus === 'IN_TRANSIT' ) {
                        throw new SpacetradersApiException( 'Ship is in transit and cargo action is unavailable right now.' );
                    }

                    if ($shipAction === 'sell_ship_cargo' && $shipStatus !== 'DOCKED' ) {
                        $client->dockShip( $sellShipSymbol );
                    }

                    $inventory = (array) ( $shipData['cargo']['inventory'] ?? array() );
                    $handledItems = 0;
                    foreach ( $inventory as $item ) {
                        $tradeSymbol = (string) ( $item['symbol'] ?? '' );
                        $units       = (int) ( $item['units'] ?? 0 );
                        if ($tradeSymbol === '' || $units <= 0 ) {
                            continue;
                        }

                        try {
                            if ($shipAction === 'sell_ship_cargo' ) {
                                $client->sellCargo( $sellShipSymbol, $tradeSymbol, $units );
                            } else {
                                $client->jettisonCargo( $sellShipSymbol, $tradeSymbol, $units );
                            }
                            $handledItems++;
                        } catch (SpacetradersApiException $e) {
                            // Continue processing other items.
                        }
                    }

                    if ($shipAction === 'sell_ship_cargo' ) {
                        $statusMessage = $sellShipSymbol . ': sold ' . $handledItems . ' cargo item type(s).';
                    } else {
                        $statusMessage = $sellShipSymbol . ': jettisoned ' . $handledItems . ' cargo item type(s).';
                    }
                    $storage->clearAllCache();

                    $shipsResponse = $client->listMyShips();
                    $ships = $shipsResponse['data'] ?? $shipsResponse;
                    $miningShips = filterMiningShips( $ships );
                } catch (SpacetradersApiException $e) {
                    $errorMessage = $sellShipSymbol . ': ' . $e->getMessage();
                }
            }
        }
    }
} catch (SpacetradersApiException $e) {
    $errorMessage = $e->getMessage();
}
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Spacetraders - Mining Fleet</title>
    <script src="https://cdn.tailwindcss.com"></script>
</head>

<body class="container mx-auto px-4 py-8 bg-stone-800 text-gray-200">
    <?php require __DIR__ . '/main-menu.php'; ?>

    <h1 class="text-3xl font-bold mb-6 underline decoration-gray-300 w-full"><a href="mining-fleet.php">Spacetraders - Mining Fleet</a></h1>

    <?php if (isset( $tokenError ) ) : ?>
        <div class="mb-6 border border-red-500 p-4 rounded text-red-300">
            <?php echo htmlspecialchars( $tokenError ); ?>
        </div>
        </body>
        </html>
        <?php exit; ?>
    <?php endif; ?>

    <?php if ($statusMessage !== '' ) : ?>
        <div class="mb-4 border border-green-500 p-4 rounded text-green-300">
            <?php echo htmlspecialchars( $statusMessage ); ?>
        </div>
    <?php endif; ?>

    <?php if ($errorMessage !== '' ) : ?>
        <div class="mb-4 border border-red-500 p-4 rounded text-red-300">
            <?php echo htmlspecialchars( $errorMessage ); ?>
        </div>
    <?php endif; ?>

    <div class="mb-6 border border-gray-600 rounded p-4">
        <h2 class="text-xl font-bold mb-3">Global Controls</h2>
        <form method="post" class="flex flex-wrap items-end gap-3">
            <div>
                <label for="market_waypoint" class="block text-sm mb-1">Market Waypoint</label>
                <select id="market_waypoint" name="market_waypoint" class="px-3 py-2 rounded text-black min-w-64">
                    <?php foreach ( $marketWaypoints as $waypoint ) : ?>
                        <option value="<?php echo htmlspecialchars( $waypoint ); ?>" <?php echo $waypoint === $selectedMarketWaypoint ? 'selected' : ''; ?>>
                            <?php echo htmlspecialchars( $waypoint ); ?>
                        </option>
                    <?php endforeach; ?>
                </select>
            </div>

            <button type="submit" name="fleet_action" value="excavate_all" class="px-4 py-2 bg-emerald-700 rounded hover:bg-emerald-600">
                Command All: Excavate
            </button>
            <button type="submit" name="fleet_action" value="dock_refuel_all" class="px-4 py-2 bg-blue-700 rounded hover:bg-blue-600">
                Command All: Dock & Refuel
            </button>
            <button type="submit" name="fleet_action" value="move_and_sell_all" class="px-4 py-2 bg-amber-700 rounded hover:bg-amber-600">
                Command All: Move to Market & Sell
            </button>
            <button type="submit" name="fleet_action" value="sell_cargo_here_all" class="px-4 py-2 bg-rose-700 rounded hover:bg-rose-600">
                Command All: Sell Cargo Here
            </button>
            <button type="submit" name="fleet_action" value="jettison_cargo_all" class="px-4 py-2 bg-red-800 rounded hover:bg-red-700">
                Command All: Jettison Cargo
            </button>
        </form>
    </div>

    <?php if (! empty( $actionResults ) ) : ?>
        <div class="mb-6 border border-gray-600 rounded p-4">
            <h3 class="font-bold mb-2">Action Results</h3>
            <ul class="list-disc list-inside text-sm text-gray-300">
                <?php foreach ( $actionResults as $result ) : ?>
                    <li><?php echo htmlspecialchars( (string) $result ); ?></li>
                <?php endforeach; ?>
            </ul>
        </div>
    <?php endif; ?>

    <p class="mb-4 text-gray-300">
        Mining Ships: <span class="font-semibold"><?php echo number_format( count( $miningShips ) ); ?></span>
    </p>

    <div class="mb-6 border border-gray-600 rounded p-4">
        <h2 class="text-xl font-bold mb-3">Active Contracts</h2>
        <?php if (empty( $activeContracts ) ) : ?>
            <p class="text-gray-300">No active contracts.</p>
        <?php else : ?>
            <div class="grid grid-cols-1 lg:grid-cols-2 gap-4">
                <?php foreach ( $activeContracts as $contract ) : ?>
                    <?php
                    $contractType = (string) ( $contract['type'] ?? '' );
                    $deliveries = (array) ( $contract['terms']['deliver'] ?? array() );
                    ?>
                    <div class="border border-gray-500 rounded p-3">
                        <p><span class="font-bold">Contract:</span> <?php echo htmlspecialchars( (string) ( $contract['id'] ?? '' ) ); ?></p>
                        <p><span class="font-bold">Type:</span> <?php echo htmlspecialchars( $contractType ); ?></p>
                        <p>
                            <span class="font-bold">Deadline:</span>
                            <?php echo htmlspecialchars( (string) date( 'Y-m-d H:i:s', strtotime( (string) ( $contract['terms']['deadline'] ?? '' ) ) ) ); ?>
                        </p>
                        <p>
                            <span class="font-bold">Payment:</span>
                            <?php echo number_format( (int) ( $contract['terms']['payment']['onAccepted'] ?? 0 ) ); ?>
                            +
                            <?php echo number_format( (int) ( $contract['terms']['payment']['onFulfilled'] ?? 0 ) ); ?>
                        </p>
                        <?php if (! empty( $deliveries ) ) : ?>
                            <p class="mt-2 font-bold">Deliveries:</p>
                            <ul class="list-disc list-inside text-sm text-gray-300">
                                <?php foreach ( $deliveries as $delivery ) : ?>
                                    <?php
                                    $unitsRequired = (int) ( $delivery['unitsRequired'] ?? 0 );
                                    $unitsFulfilled = (int) ( $delivery['unitsFulfilled'] ?? 0 );
                                    ?>
                                    <li>
                                        <?php echo htmlspecialchars( (string) ( $delivery['tradeSymbol'] ?? '' ) ); ?>:
                                        <?php echo number_format( $unitsFulfilled ); ?>/<?php echo number_format( $unitsRequired ); ?>
                                        to <?php echo htmlspecialchars( (string) ( $delivery['destinationSymbol'] ?? '' ) ); ?>
                                    </li>
                                <?php endforeach; ?>
                            </ul>
                        <?php endif; ?>
                    </div>
                <?php endforeach; ?>
            </div>
        <?php endif; ?>
    </div>

    <?php if (empty( $miningShips ) ) : ?>
        <div class="border border-gray-600 rounded p-4">No mining ships found (role: EXCAVATOR).</div>
    <?php endif; ?>

    <div class="grid grid-cols-1 lg:grid-cols-2 gap-4">
        <?php foreach ( $miningShips as $ship ) : ?>
            <?php
            $shipSymbol = (string) ( $ship['symbol'] ?? '' );
            $fuelCurrent = (int) ( $ship['fuel']['current'] ?? 0 );
            $fuelCapacity = (int) ( $ship['fuel']['capacity'] ?? 0 );
            $cargoUnits = (int) ( $ship['cargo']['units'] ?? 0 );
            $cargoCapacity = (int) ( $ship['cargo']['capacity'] ?? 0 );
            ?>
            <div class="border border-gray-600 rounded p-4">
                <h3 class="text-lg font-bold mb-2">
                    <a href="ship-details.php?ship=<?php echo urlencode( $shipSymbol ); ?>" class="text-blue-400 hover:underline">
                        <?php echo htmlspecialchars( $shipSymbol ); ?>
                    </a>
                </h3>
                <p><span class="font-bold">Name:</span> <?php echo htmlspecialchars( (string) ( $ship['registration']['name'] ?? '' ) ); ?></p>
                <p><span class="font-bold">Status:</span> <?php echo htmlspecialchars( (string) ( $ship['nav']['status'] ?? '' ) ); ?></p>
                <p><span class="font-bold">Waypoint:</span> <?php echo htmlspecialchars( (string) ( $ship['nav']['waypointSymbol'] ?? '' ) ); ?></p>
                <p><span class="font-bold">Fuel:</span> <?php echo number_format( $fuelCurrent ); ?>/<?php echo number_format( $fuelCapacity ); ?></p>
                <p><span class="font-bold">Cargo:</span> <?php echo number_format( $cargoUnits ); ?>/<?php echo number_format( $cargoCapacity ); ?></p>

                <?php $inventory = (array) ( $ship['cargo']['inventory'] ?? array() ); ?>
                <?php if (! empty( $inventory ) ) : ?>
                    <p class="mt-2 font-bold">Cargo Contents:</p>
                    <ul class="list-disc list-inside text-sm text-gray-300">
                        <?php foreach ( $inventory as $item ) : ?>
                            <li>
                                <?php echo htmlspecialchars( (string) ( $item['symbol'] ?? '' ) ); ?>:
                                <?php echo number_format( (int) ( $item['units'] ?? 0 ) ); ?>
                            </li>
                        <?php endforeach; ?>
                    </ul>

                    <form method="post" class="mt-3">
                        <input type="hidden" name="ship_action" value="sell_ship_cargo">
                        <input type="hidden" name="ship_symbol" value="<?php echo htmlspecialchars( $shipSymbol ); ?>">
                        <button type="submit" class="px-3 py-1 bg-rose-700 rounded hover:bg-rose-600">Sell This Ship's Cargo</button>
                    </form>
                    <form method="post" class="mt-2">
                        <input type="hidden" name="ship_action" value="jettison_ship_cargo">
                        <input type="hidden" name="ship_symbol" value="<?php echo htmlspecialchars( $shipSymbol ); ?>">
                        <button type="submit" class="px-3 py-1 bg-red-800 rounded hover:bg-red-700">Jettison This Ship's Cargo</button>
                    </form>
                <?php endif; ?>
            </div>
        <?php endforeach; ?>
    </div>
</body>
</html>