<?php
require_once "class/VisualLimsApiClient.class.php";
include('include/headscript.php');

$dbHandler = DBHandlerSelect::getInstance();
$pdo = $dbHandler->getConnection();

header("Content-Type: application/json");

try {
    $iddatadb = $_POST['iddatadb'] ?? null;
    if (!$iddatadb) {
        throw new Exception("Missing iddatadb");
    }

    // ⚠️ Simulation ON (change it to false to enable real API calls)
    $simulate = true;

    // 🔹 STEP 1+2: Fetch Cliente ID + Schema ID
    $stmt = $pdo->prepare("
        SELECT et.idclient AS clienteId, et.idschema AS schemaId
        FROM datadb as d
        INNER JOIN excel_templates as et ON d.templateid = et.id
        WHERE d.iddatadb = :iddatadb
        LIMIT 1
    ");
    $stmt->execute(['iddatadb' => $iddatadb]);
    $result = $stmt->fetch(PDO::FETCH_ASSOC);

    if (!$result) {
        throw new Exception("No Cliente/Schema found for iddatadb {$iddatadb}");
    }

    $clienteId = (int) $result['clienteId'];
    $schemaId  = (int) $result['schemaId'];

    // 🔹 STEP 3: Fetch Parts
    $stmt = $pdo->prepare("
        SELECT part_number, part_description, material, color, mix
        FROM identification_parts
        WHERE iddatadb = :iddatadb
    ");
    $stmt->execute(['iddatadb' => $iddatadb]);
    $parts = $stmt->fetchAll(PDO::FETCH_ASSOC);

    // 🔹 STEP 4: Fetch Field Values with Labels
    $stmt = $pdo->prepare("
        SELECT
          idd.field_value,
          m.field_label,
          m.schema_id,
          m.field_id
        FROM
          import_data_details as idd
          JOIN template_mapping m ON idd.mapping_id = m.id
        WHERE idd.id = :iddatadb
    ");
    $stmt->execute(['iddatadb' => $iddatadb]);
    $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

    $fieldValues = [];
    foreach ($rows as $row) {
        $fieldValues[] = [
            "FieldLabel" => $row['field_label'],
            "FieldValue" => $row['field_value'],
            "SchemaId" => (int) $row['schema_id'],
            "FieldId" => (int) $row['field_id']
        ];
    }

    // 🔹 Initialize API client (even in simulation mode for consistency)
    $api = null;
    if (!$simulate) {
        $api = VisualLimsApiClient::getInstance();
    }

    // 🔹 STEP 5: Create WebOrder
    $webOrderPayload = [
        "Customer" => $clienteId
    ];

    if ($simulate) {
        // Simulate WebOrder creation
        $webOrder = [
            "Id" => 999999,
            "Code" => "TEST-WO-001",
            "Customer" => $clienteId,
            "CreatedDate" => date('c'),
            "Status" => "Draft"
        ];
    } else {
        // Real API call
        $webOrder = $api->post("odata/WebOrder", $webOrderPayload);
    }

    $webOrderId = $webOrder["Id"];

    // 🔹 STEP 6: Create Samples for each part
    $samples = [];
    foreach ($parts as $index => $part) {
        $samplePayload = [
            "OrderId" => $webOrderId,
            "Description" => $part["part_description"] ?? "",
            "SampleCode" => $part["part_number"] ?? "",
            "Material" => $part["material"] ?? "",
            "Color" => $part["color"] ?? "",
            "Mix" => $part["mix"] ?? ""
        ];

        if ($simulate) {
            // Simulate Sample creation
            $sample = [
                "Id" => 888000 + $index,
                "OrderId" => $webOrderId,
                "Description" => $part["part_description"] ?? "",
                "SampleCode" => $part["part_number"] ?? "",
                "Material" => $part["material"] ?? "",
                "Color" => $part["color"] ?? "",
                "Mix" => $part["mix"] ?? "",
                "Status" => "Created",
                "CreatedDate" => date('c')
            ];
        } else {
            // Real API call
            $sample = $api->post("odata/Sample", $samplePayload);
        }

        $samples[] = $sample;
    }

    // 🔹 STEP 7: Handle Custom Fields for each sample
    $samplesWithCustomFields = [];
    foreach ($samples as $sample) {
        $sampleId = $sample["Id"];

        if ($simulate) {
            // Simulate getting sample with custom fields
            $sampleWithFields = $sample;
            $sampleWithFields["CustomFieldSamples"] = [];

            // Simulate custom field updates
            foreach ($fieldValues as $fieldIndex => $fieldValue) {
                $customField = [
                    "Id" => 777000 + $fieldIndex,
                    "SampleId" => $sampleId,
                    "FieldLabel" => $fieldValue["FieldLabel"],
                    "FieldValue" => $fieldValue["FieldValue"],
                    "UpdatedDate" => date('c')
                ];
                $sampleWithFields["CustomFieldSamples"][] = $customField;
            }
        } else {
            // Real API calls
            // Get sample with custom fields expanded
            $sampleWithFields = $api->get("odata/Sample({$sampleId})?$expand=CustomFieldSamples");

            // Update custom fields (this depends on the actual API structure)
            foreach ($fieldValues as $fieldValue) {
                // This might need to be adjusted based on the actual Custom Fields API structure
                $customFieldPayload = [
                    "SampleId" => $sampleId,
                    "FieldLabel" => $fieldValue["FieldLabel"],
                    "FieldValue" => $fieldValue["FieldValue"]
                ];

                try {
                    $customFieldResult = $api->post("odata/CustomFieldSample", $customFieldPayload);
                } catch (Exception $e) {
                    // Log custom field error but don't fail the entire process
                    error_log("Custom Field Error for Sample {$sampleId}: " . $e->getMessage());
                }
            }

            // Re-fetch sample with updated custom fields
            $sampleWithFields = $api->get("odata/Sample({$sampleId})?$expand=CustomFieldSamples");
        }

        $samplesWithCustomFields[] = $sampleWithFields;
    }

    // 🔹 STEP 8: Optionally send the order to laboratory
    $orderSent = false;
    if (!$simulate) {
        try {
            $sendResult = $api->post("odata/WebOrder({$webOrderId})/SendOrder", []);
            $orderSent = true;
        } catch (Exception $e) {
            // Log error but don't fail the process
            error_log("Send Order Error: " . $e->getMessage());
        }
    }

    // 🔹 STEP 9: Prepare final response
    $finalWebOrder = [
        "IdCommessa" => $webOrderId,
        "CodiceCommessa" => $webOrder["Code"] ?? "N/A",
        "IdCliente" => $clienteId,
        "IdSchema" => $schemaId,
        "Customer" => $webOrder["Customer"] ?? $clienteId,
        "Status" => $webOrder["Status"] ?? "Draft",
        "CreatedDate" => $webOrder["CreatedDate"] ?? date('c'),
        "Fields" => $fieldValues,
        "Samples" => $samplesWithCustomFields,
        "Inviato" => $orderSent ? 1 : 0
    ];

    // 🔹 Final Response
    echo json_encode([
        "success" => true,
        "webOrder" => $finalWebOrder,
        "totalSamples" => count($samplesWithCustomFields),
        "totalCustomFields" => count($fieldValues),
        "simulation" => $simulate,
        "orderSent" => $orderSent
    ]);

} catch (Exception $e) {
    // Log the error for debugging
    error_log("LIMS Export Error: " . $e->getMessage() . "\nTrace: " . $e->getTraceAsString());

    echo json_encode([
        "success" => false,
        "message" => "Export failed: " . $e->getMessage(),
        "simulation" => $simulate ?? true
    ]);
}