<?php
// tambah.php
// Menambah data jalan atau parsil tanah.
// Parameter pembeda: tipe=jalan atau tipe=parsil.

require_once "koneksi.php";

if ($_SERVER["REQUEST_METHOD"] !== "POST") {
    json_response([
        "success" => false,
        "message" => "Tambah data hanya menerima method POST."
    ], 405);
}

function valid_geojson($geojson)
{
    if ($geojson === "") {
        return false;
    }

    json_decode($geojson, true);
    return json_last_error() === JSON_ERROR_NONE;
}

$tipe = $_POST["tipe"] ?? "";

if ($tipe === "jalan") {
    $nama_jalan = trim($_POST["nama_jalan"] ?? "");
    $status_jalan = $_POST["status_jalan"] ?? "";
    $panjang_meter = $_POST["panjang_meter"] ?? "";
    $geojson = trim($_POST["geojson"] ?? "");

    $status_valid = ["nasional", "provinsi", "kabupaten"];

    if ($nama_jalan === "") {
        json_response(["success" => false, "message" => "Nama jalan wajib diisi."], 422);
    }

    if (!in_array($status_jalan, $status_valid, true)) {
        json_response(["success" => false, "message" => "Status jalan tidak valid."], 422);
    }

    if (!is_numeric($panjang_meter) || (float) $panjang_meter <= 0) {
        json_response(["success" => false, "message" => "Panjang jalan tidak valid."], 422);
    }

    if (!valid_geojson($geojson)) {
        json_response(["success" => false, "message" => "GeoJSON jalan tidak valid."], 422);
    }

    $panjang_meter = (float) $panjang_meter;

    $stmt = $koneksi->prepare(
        "INSERT INTO jalan (nama_jalan, status_jalan, panjang_meter, geojson)
         VALUES (?, ?, ?, ?)"
    );

    if (!$stmt) {
        json_response(["success" => false, "message" => "Prepare statement gagal: " . $koneksi->error], 500);
    }

    $stmt->bind_param("ssds", $nama_jalan, $status_jalan, $panjang_meter, $geojson);

    if (!$stmt->execute()) {
        json_response(["success" => false, "message" => "Gagal menyimpan data jalan: " . $stmt->error], 500);
    }

    $id = $stmt->insert_id;
    $stmt->close();

    json_response([
        "success" => true,
        "message" => "Data jalan berhasil ditambahkan.",
        "data" => [
            "id" => (int) $id,
            "nama_jalan" => $nama_jalan,
            "status_jalan" => $status_jalan,
            "panjang_meter" => $panjang_meter,
            "geojson" => $geojson
        ]
    ]);
}

if ($tipe === "parsil") {
    $nama_parsil = trim($_POST["nama_parsil"] ?? "");
    $status_kepemilikan = $_POST["status_kepemilikan"] ?? "";
    $luas_meter = $_POST["luas_meter"] ?? "";
    $geojson = trim($_POST["geojson"] ?? "");

    $status_valid = ["SHM", "HGB", "HGU", "HP"];

    if ($nama_parsil === "") {
        json_response(["success" => false, "message" => "Nama parsil wajib diisi."], 422);
    }

    if (!in_array($status_kepemilikan, $status_valid, true)) {
        json_response(["success" => false, "message" => "Status kepemilikan tidak valid."], 422);
    }

    if (!is_numeric($luas_meter) || (float) $luas_meter <= 0) {
        json_response(["success" => false, "message" => "Luas tanah tidak valid."], 422);
    }

    if (!valid_geojson($geojson)) {
        json_response(["success" => false, "message" => "GeoJSON parsil tanah tidak valid."], 422);
    }

    $luas_meter = (float) $luas_meter;

    $stmt = $koneksi->prepare(
        "INSERT INTO parsil_tanah (nama_parsil, status_kepemilikan, luas_meter, geojson)
         VALUES (?, ?, ?, ?)"
    );

    if (!$stmt) {
        json_response(["success" => false, "message" => "Prepare statement gagal: " . $koneksi->error], 500);
    }

    $stmt->bind_param("ssds", $nama_parsil, $status_kepemilikan, $luas_meter, $geojson);

    if (!$stmt->execute()) {
        json_response(["success" => false, "message" => "Gagal menyimpan data parsil tanah: " . $stmt->error], 500);
    }

    $id = $stmt->insert_id;
    $stmt->close();

    json_response([
        "success" => true,
        "message" => "Data parsil tanah berhasil ditambahkan.",
        "data" => [
            "id" => (int) $id,
            "nama_parsil" => $nama_parsil,
            "status_kepemilikan" => $status_kepemilikan,
            "luas_meter" => $luas_meter,
            "geojson" => $geojson
        ]
    ]);
}

json_response([
    "success" => false,
    "message" => "Tipe data tidak valid. Gunakan tipe=jalan atau tipe=parsil."
], 422);
?>