package live.page.utils;

import com.drew.imaging.ImageMetadataReader;
import com.drew.metadata.Metadata;
import com.drew.metadata.exif.ExifSubIFDDirectory;
import live.page.hubd.blobs.Blob;
import live.page.hubd.system.json.Json;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class WikiCommonDateParser {

    private static final List<SimpleDateFormat> formats = List.of(
            new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss"),
            new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"),
            new SimpleDateFormat("yyyy-MM-dd HH:mm"),
            new SimpleDateFormat("yyyy-MM-dd"),
            new SimpleDateFormat("yyyy-MM"),
            new SimpleDateFormat("MMMM d, yyyy"),
            new SimpleDateFormat("MMMM yyyy"),
            new SimpleDateFormat("yyyy")
    );

    public static Date parse(String date) {
        for (SimpleDateFormat format : formats) {
            try {
                return format.parse(date);
            } catch (Exception ignore) {
            }
        }

        date = date.trim();
        for (int i = 1; i < date.length() - 4; i++) {
            for (SimpleDateFormat format : formats) {
                try {
                    return format.parse(date.substring(0, date.length() - (1 + i)));
                } catch (Exception ignore) {
                }
                try {
                    return format.parse(date.substring(i));
                } catch (Exception ignore) {
                }
            }

        }
        return null;
    }

    public static Date cleanDate(Json page, Blob blob) {
        Json infos = null;
        try {
            infos = page.getJson("data").getJson("information");
        } catch (Exception ignore) {

        }
        String dateStr = null;
        if (infos != null && infos.get("date") != null) {

            dateStr = infos.getString("date");
            if (dateStr == null) {
                Json date = infos.getJson("date");
                if (date != null) {
                    String jsonDate = date.toString(true);
                    if (date.getString("isostring") != null) {
                        dateStr = date.getString("isostring");
                    } else if (date.containsKey("isodate")) {
                        dateStr = date.getString("isodate");
                    } else if (date.getJson("taken on") != null) {
                        dateStr = date.getJson("taken on").getString("1");
                    } else if (date.getJson("taken in") != null) {
                        dateStr = date.getJson("taken in").getString("1");
                    } else if (date.getString("taken on") != null) {
                        dateStr = date.getString("taken on");
                    } else if (date.getString("taken o") != null) {
                        dateStr = date.getString("taken o").replace("n", "");
                    } else if (date.getString("taken in") != null) {
                        dateStr = date.getString("taken in");
                    } else if (date.getString("original upload date") != null) {
                        dateStr = date.getString("original upload date");
                    } else if (date.getString("original upload date") != null) {
                        dateStr = date.getString("original upload date");
                    } else if (date.getString("dtz") != null) {
                        dateStr = date.getString("dtz");
                    } else if (date.getJson("exif date") != null) {
                        dateStr = date.getJson("exif date").getString("1");
                    } else if (date.getJson("according to exif data") != null) {
                        dateStr = date.getJson("according to exif data").getString("1");
                    } else if (date.getJson("accordingtoexif") != null) {
                        dateStr = date.getJson("accordingtoexif").getString("1");
                    } else if (date.getString("exif date") != null) {
                        dateStr = date.getString("exif date");
                    } else if (date.getString("according to exif data") != null) {
                        dateStr = date.getString("according to exif data");
                    } else if (date.getString("accordingtoexif") != null) {
                        dateStr = date.getString("accordingtoexif");
                    } else if (date.getString("according to exif") != null) {
                        dateStr = date.getString("according to exif");
                    } else if (date.getList("other date", String.class) != null) {
                        dateStr = date.getList("other date", String.class).get(1);
                    } else if (date.getString("other date") != null) {
                        dateStr = date.getString("other date");
                    } else if (date.getString("circa") != null) {
                        dateStr = date.getString("circa");
                    } else if (date.getString("upload date") != null) {
                        dateStr = date.getString("upload date");
                    } else if (date.getList("takenestormiz", String.class) != null) {
                        dateStr = date.getList("takenestormiz", String.class).get(0);
                    }
                    if (dateStr != null && dateStr.equals("?")) {
                        dateStr = null;
                    }
                }
            }
        }

        if (dateStr == null) {
            dateStr = parseTextDate(page.getText("text", ""));
        }
        if (dateStr != null) {
            Date date = parse(dateStr);
            if (date != null) {
                return date;
            } else {
                System.out.print(".");
            }
        } else {
            System.out.print(".");
        }
        if (blob != null) {
            try {
                Metadata metadata = ImageMetadataReader.readMetadata(blob.file);
                ExifSubIFDDirectory directory
                        = metadata.getFirstDirectoryOfType(ExifSubIFDDirectory.class);
                Date date = directory.getDate(ExifSubIFDDirectory.TAG_DATETIME_ORIGINAL);
                if (date == null) {
                    date = directory.getDate(ExifSubIFDDirectory.TAG_DATETIME);
                }
                return date;
            } catch (Exception ignore) {
            }
        }
        return null;
    }

    private static String parseTextDate(String text) {
        for (Matcher matcher : List.of(Pattern.compile("date ?+= ?+([a-z{|]+)([0-9 \\-:]+)", Pattern.CASE_INSENSITIVE).matcher(text))) {
            if (matcher.find()) {
                return matcher.group(1);
            }
        }
        return null;
    }
}