package osm.jp.api;
 
import java.net.*;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.io.*;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.SQLSyntaxErrorException;
 
/**
 * Java HTTP クライアントサンプル - HttpURLConnection 版 -
 *
 * @author 68user http://X68000.q-e-d.net/~68user/
 */
public class HttpPOST {
    public static String host = "http://overpass-api.de";
    public static final String EXIST_FILE = "exist.osm.xml";
    
    public String tableName = null;
    public Connection hsqldb = null;
 
    public static void main(String[] args) throws MalformedURLException, ProtocolException, IOException {
        double minlat = 35.00d;
        double maxlat = 36.00d;
        double minlon = 138.00d;
        double maxlon = 140.00d;
        //getCapabilities(new File("output.xml"), "highway", "bus_stop", minlat, maxlat, minlon, maxlon);
        //getCapabilities(new File("output.xml"), "highway", "disused:bus_stop", minlat, maxlat, minlon, maxlon);
        //getCapabilities(new File("output.xml"), "amenity", "bus_station", minlat, maxlat, minlon, maxlon);
        //getCapabilities(new File("output.xml"), "public_transport", "platform", minlat, maxlat, minlon, maxlon);
        //getCapabilities("public_transport", "stop_position", minlat, maxlat, minlon, maxlon, "node");
        getCapabilities("amenity", "fuel", minlat, maxlat, minlon, maxlon, "way");
        getCapabilities("amenity", "fuel", minlat, maxlat, minlon, maxlon, "node");
    }
    
    public HttpPOST(Connection hsqldb, String tableName) {
        this.tableName = tableName;
        this.hsqldb = hsqldb;
    }
    
    /**
     * 'HSQLDB.table.OSM_EXIST'を新規に作る
     * 'HSQLDB.table.AREA_NODE'を新規に作る
     * 既にテーブルが存在する時にはERROR
     * 
     * @throws SQLException
     */
    public void create() throws SQLException {
        String createSt;
        
        sql("DROP TABLE IF EXISTS "+ this.tableName +" CASCADE");
        sql("DROP TABLE IF EXISTS AREA_NODE CASCADE");
 
        // 'table.FUEL_EXIST'を新規に作る
        createSt = "CREATE TABLE "+ this.tableName +" (idref VARCHAR(12) NOT NULL, name VARCHAR(128), lat DOUBLE, lon DOUBLE, score INT, PRIMARY KEY(idref));";
        Db.updateSQL(hsqldb, createSt);
        createSt = "CREATE INDEX "+ this.tableName +"_index ON "+ this.tableName +" (lat, lon);";
        Db.updateSQL(hsqldb, createSt);
 
        // 'table.AREA_NODE'を新規に作る
        createSt = "CREATE TABLE AREA_NODE (idref VARCHAR(12) NOT NULL, pid VARCHAR(12), lat DOUBLE, lon DOUBLE);";
        Db.updateSQL(hsqldb, createSt);
    }
    
    public void sql(String sql) throws SQLException {
        System.out.println(sql);
        try (PreparedStatement ps = this.hsqldb.prepareStatement(sql)) {
            ps.executeUpdate();
        }
        catch (SQLSyntaxErrorException e) {
            System.out.println("107:"+ e.toString());
            if (!(e.toString().startsWith("java.sql.SQLSyntaxErrorException: user lacks privilege or object not found:"))) {
                throw e;
            }
        }
    }
 
    public static void getCapabilities(String key, String value, double minLat, double maxLat, double minLon, double maxLon) throws MalformedURLException, ProtocolException, IOException {
        getCapabilities(key, value, minLat, maxLat, minLon, maxLon, "node");
    }
 
    public static void getCapabilities(String key, String value, double minLat, double maxLat, double minLon, double maxLon, String type) throws MalformedURLException, ProtocolException, IOException {
        StringBuilder queryText = new StringBuilder();
        queryText.append("<osm-script timeout=\"900\" element-limit=\"1073741824\">");
        queryText.append(" <union>");
        queryText.append("  <query type=\""+ type +"\">");
        queryText.append("   <has-kv k=\""+ key +"\" v=\""+ value +"\"/>");
        queryText.append("   <bbox-query s=\"" + minLat + "\" n=\"" + maxLat + "\" w=\"" + minLon + "\" e=\"" + maxLon + "\"/>");
        queryText.append("  </query>");
        queryText.append(" </union>");
        queryText.append(" <print/>");
        queryText.append("</osm-script>");
        getQuery(queryText.toString());
    }
 
    /**
     *
     * @param queryText クエリテキスト（Overpass_API/Overpass_QL）
     * @throws MalformedURLException
     * @throws ProtocolException
     * @throws IOException
     */
    public static void getQuery(String queryText) throws MalformedURLException, ProtocolException, IOException {
        System.out.println(host + "/api/interpreter");
        URL url = new URL(host + "/api/interpreter");
        int responsecode = 0;
 
        do {
            HttpURLConnection urlconn = (HttpURLConnection)url.openConnection();
            try {
                urlconn.setRequestMethod("POST");
                urlconn.setDoOutput(true);              		// POSTのデータを後ろに付ける
                urlconn.setInstanceFollowRedirects(false);		// 勝手にリダイレクトさせない
                urlconn.setRequestProperty("Accept-Language", "ja;q=0.7,en;q=0.3");
                urlconn.setRequestProperty("Content-Type","text/xml;charset=utf-8");
                urlconn.connect();
 
                try (PrintWriter pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(urlconn.getOutputStream(), "utf-8")))) {
                    outputWriter(pw, queryText);
                    pw.flush();
                }
 
                System.out.println("Sleep 20 sec...");
                try {
                    TimeUnit.SECONDS.sleep(20);
                } catch (InterruptedException e) {}
 
                responsecode = urlconn.getResponseCode();
                System.out.println("レスポンスコード[" + responsecode + "] " +
                                   "レスポンスメッセージ[" + urlconn.getResponseMessage() + "]");
                Map<String,List<String>> headers = urlconn.getHeaderFields();
                for (Map.Entry<String, List<String>> bar : headers.entrySet()) {
                    System.out.print("\t" + bar.getKey() +"\t: ");  // キーを取得
                    List<String> vals = bar.getValue();  // 値を取得
                    for(String str : vals) {
                        System.out.print("["+ str +"],");
                    }
                    System.out.println();
                }
                if ((responsecode == 429) || (responsecode == 504) || (responsecode == 500)) {
                    // レスポンスコード[429] レスポンスメッセージ[Too Many Requests]
                    // レスポンスコード[500] レスポンスメッセージ[Internal server error]
                    // レスポンスコード[504] レスポンスメッセージ[Gateway Timeout]
                    System.out.print("Waite 5 minites.");
                    try {
                        TimeUnit.MINUTES.sleep(5);
                    } catch (InterruptedException e) {}
                }
                else {
                    System.out.println("\n---- ボディ ----");
 
                    File oFile = new File(HttpPOST.EXIST_FILE);
                    oFile.deleteOnExit();
                    try (
                            BufferedWriter hw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(oFile), "UTF-8"));
                            BufferedReader reader = new BufferedReader(new InputStreamReader(urlconn.getInputStream(), "UTF-8"))
                    ) {
                        while (true) {
                            String line = reader.readLine();
                            if (line == null) {
                                break;
                            }
                            hw.write(line);
                            hw.newLine();
                        }
                        hw.flush();
                    }
                }
            }
            catch (java.net.ConnectException e) {
                // レスポンスコード[600] レスポンスメッセージ[接続がタイムアウトしました (Connection timed out)]
                responsecode = 600;
            }
            finally {
                urlconn.disconnect();
            }
            System.out.print("Waite 5 seconds.");
            try {
                TimeUnit.SECONDS.sleep(5);
            } catch (InterruptedException e) {}
        }
        while ((responsecode == 429) || (responsecode == 504) || (responsecode == 600));
    }
	
    public static void outputWriter(PrintWriter pw, String text) {
        System.out.println("\t" + text);
        pw.print(text);
    }
    
    public static final int POINT_NO = 0;       // 評価ポイント無し→ score=50
    public static final int POINT_FIXME = 1;    // 評価ポイント無し→ score=50
    public static final int POINT_BRAND = 2;    // 評価ポイント｜brand=null → score=1
    public static final int POINT_NAME = 4;     // 評価ポイント｜name=null → score=1
    
    /**
     * File(HttpPOST.EXIST_FILE)を読み取って、データベースに反映させる。<br>
     * その際に、OSMノードを評価し、scoreを算定する
     * param con       反映先のデータベースコネクタ(HSQLDB)
     * param point     評価ポイント[POINT_NO|POINT_BRAND|POINT_NAME] 1: 'brand'  2:'name'
     */
 
 
    /**
     * 
     * @param con
     * @param idref
     * @return
     * @throws SQLException 
     */
    public static Position getNdPosition(Connection con, String idref) throws SQLException {
        PreparedStatement ps8 = con.prepareStatement("SELECT lat,lon FROM AREA_NODE where idref=?");
        ps8.setString(1, idref);
        try (ResultSet rset8 = ps8.executeQuery()) {
            while (rset8.next()) {
                Double lat = rset8.getDouble(1);
                Double lon = rset8.getDouble(2);
                return new Position(lat,lon);
            }
        }
        return null;
    }
 
}