import { cloneDeep } from 'lodash';
import { PureComponent } from 'react';
import { $DEVCOMP } from 'solid-js';
import { Point, Rectangle } from '../components/map/types';
import { lat2tile, lon2tile, rectanglesIntersect } from '../lib/geo';
import { findStartTime } from '../lib/gpx';
import getUri, { intToGpxId, intToTrkptId } from '../lib/ids';
import { get, getDocsByType, getFamily, put, putAll } from './lib';

export const emptyGpx: Gpx = {
  $: {
    version: '1.1',
    creator: 'dyomedea version 0.000002',
    xmlns: 'http://www.topografix.com/GPX/1/1',
    'xmlns:xsi': 'http://www.w3.org/2001/XMLSchema-instance',
    'xsi:schemaLocation':
      'http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www8.garmin.com/xmlschemas/GpxExtensionsv3.xsd http://www.garmin.com/xmlschemas/WaypointExtension/v1 http://www8.garmin.com/xmlschemas/WaypointExtensionv1.xsd http://www.garmin.com/xmlschemas/TrackPointExtension/v1 http://www.garmin.com/xmlschemas/TrackPointExtensionv1.xsd',
    'xmlns:gpxx': 'http://www.garmin.com/xmlschemas/GpxExtensions/v3',
    'xmlns:wptx1': 'http://www.garmin.com/xmlschemas/WaypointExtension/v1',
    'xmlns:gpxtpx': 'http://www.garmin.com/xmlschemas/TrackPointExtension/v1',
    'xmlns:dyo': 'http://xmlns.dyomedea.com/',
  },
  metadata: {
    name: undefined,
    desc: undefined,
    author: undefined,
    copyright: undefined,
    link: undefined,
    time: undefined,
    keywords: undefined,
    bounds: undefined,
    extensions: undefined,
  },
  wpt: undefined,
  rte: undefined,
  trk: undefined,
  extensions: undefined,
};

export const putNewGpx = async (
  id: IdGpx = { gpx: intToGpxId(Date.now()) }
) => {
  const uri = getUri('gpx', id);
  await put(
    uri,
    'gpx',
    (gpx) => {
      (gpx.metadata ??= {}).time = new Date(Date.now()).toISOString();
      return gpx;
    },
    emptyGpx
  );
  return id;
};

export const existsGpx = async (id: IdGpx) => {
  const uri = getUri('gpx', id);
  try {
    await get(uri);
    return true;
  } catch {
    return false;
  }
};

const prune = (
  id: any,
  object: any,
  previousGpx: Gpx | null,
  extensions: any,
  docs: any[]
) => {
  if (typeof object === 'object') {
    for (const key in object) {
      if (
        key === 'wpt' ||
        key === 'rte' ||
        key === 'rtept' ||
        key === 'trk' ||
        key === 'trkseg' ||
        key === 'trkpt'
      ) {
        const subObjects = object[key];
        let previousId = 0;
        let nbPreviousObjects = 0;
        if (previousGpx !== null && key in previousGpx) {
          nbPreviousObjects = previousGpx[key].length;
        }
        for (const index in subObjects) {
          const subId = { ...id };
          if (key === 'trkpt') {
            // fix buggy times in GPX tracks
            const normalId = intToTrkptId(
              new Date(object[key][index].time).valueOf()
            );
            const id = normalId > previousId ? normalId : previousId + 1;
            subId[key] = id;
            previousId = id;
          } else {
            subId[key] = index + nbPreviousObjects;
          }
          // console.log({
          //   caller: 'prune',
          //   id,
          //   subId,
          //   key,
          //   object: object[key][index],
          //   time: object[key][index].time,
          // });
          subObjects[index].extensions = {
            ...extensions,
            ...subObjects[index].extensions,
          };
          docs.push({
            _id: getUri(key, subId),
            type: key,
            doc: subObjects[index],
          });
          prune(subId, subObjects[index], previousGpx, extensions, docs);
        }
        object[key] = undefined;
      } else prune(id, object[key], previousGpx, extensions, docs);
    }
  }
};

// const extensionsFromObject = (
//   object: any,
//   extensions = {
//     viewport: { topLeft: <Point>{}, bottomRight: <Point>{} },
//     bbox: {
//       minLon: <number | undefined>undefined,
//       minLat: <number | undefined>undefined,
//       maxLon: <number | undefined>undefined,
//       maxLat: <number | undefined>undefined,
//     },
//   }
// ) => {
//   if (typeof object === 'object') {
//     if ('$' in object) {
//       const attributes = object.$;
//       if ('lat' in attributes) {
//         const lat = +attributes.lat;
//         if (
//           extensions.bbox.minLat === undefined ||
//           lat < extensions.bbox.minLat
//         ) {
//           extensions.bbox.minLat = lat;
//         }
//         if (
//           extensions.bbox.maxLat === undefined ||
//           lat > extensions.bbox.maxLat
//         ) {
//           extensions.bbox.maxLat = lat;
//         }
//       }
//       if ('lon' in attributes) {
//         const lon = +attributes.lon;
//         if (
//           extensions.bbox.minLon === undefined ||
//           lon < extensions.bbox.minLon
//         ) {
//           extensions.bbox.minLon = lon;
//         }
//         if (
//           extensions.bbox.maxLon === undefined ||
//           lon > extensions.bbox.maxLon
//         ) {
//           extensions.bbox.maxLon = lon;
//         }
//       }
//     }
//     for (const key in object) {
//       extensionsFromObject(object[key], extensions);
//     }
//   }
//   return extensions;
// };

// const extensionsFromGpx = (gpx: Gpx) => {
//   const extensions = { ...gpx.extensions, ...extensionsFromObject(gpx) };
//   gpx.extensions = undefined;
//   if (
//     extensions.bbox.maxLat !== undefined &&
//     extensions.bbox.minLon !== undefined
//   ) {
//     extensions.viewport.topLeft = {
//       x: lon2tile(extensions.bbox.minLon, 0),
//       y: lat2tile(extensions.bbox.maxLat, 0),
//     };
//   }
//   if (
//     extensions.bbox.minLat !== undefined &&
//     extensions.bbox.maxLon !== undefined
//   ) {
//     extensions.viewport.bottomRight = {
//       x: lon2tile(extensions.bbox.maxLon, 0),
//       y: lat2tile(extensions.bbox.minLat, 0),
//     };
//   }

//   return extensions;
// };

const hasMissingTimestamps = (trk: Trk) => {
  for (const trkseg of trk.trkseg!) {
    for (const trkpt of trkseg.trkpt!) {
      if (trkpt.time === undefined) {
        return true;
      }
    }
  }
  return false;
};

const convertTrkToRteWhenNeeded = (gpx: Gpx) => {
  if (gpx.trk === undefined) {
    return;
  }
  const newTrks: Trk[] = [];
  for (const trk of gpx.trk) {
    if (hasMissingTimestamps(trk)) {
      const rte = { ...trk, trkseg: undefined, rtept: [] };
      for (const trkseg of trk.trkseg!) {
        rte.rtept = rte.rtept.concat(trkseg.trkpt);
      }
      if (gpx.rte === undefined) {
        gpx.rte = [];
      }
      gpx.rte.push(rte);
    } else {
      newTrks.push(trk);
    }
  }
  gpx.trk = newTrks;
};

export const pruneAndSaveImportedGpx = async (params: any) => {
  console.log({ caller: 'pruneAndSaveImportedGpx', params });
  const { id, gpx, tech } = params;
  let gpxId: IdGpx;
  let docs: any[] = [];
  const extensions = {
    ...tech,
    ...gpx.extensions,
    gpx: {
      creator: gpx?.$?.creator,
      metadata: gpx.metadata,
      extensions: gpx.extensions,
    },
  };
  convertTrkToRteWhenNeeded(gpx);
  let previousGpx: Gpx | null = null;
  if (id === 'new') {
    const currentDateTime = new Date().toISOString();
    const startTime = new Date(findStartTime(gpx, currentDateTime));
    if (gpx.metadata === undefined) {
      gpx.metadata = {};
    }
    if (gpx.metadata.time === undefined) {
      gpx.metadata.time = startTime.toISOString();
    }
    gpxId = { gpx: intToGpxId(startTime.valueOf()) };
    docs = [
      { _id: getUri('gpx', gpxId), type: 'gpx', doc: gpx },
      {
        _id: getUri('extensions', gpxId),
        type: 'extensions',
        doc: {},
      },
    ];
  } else {
    gpxId = getUri('gpx', id);
    previousGpx = (await getGpx(id)) ?? null;
  }
  prune(gpxId, gpx, previousGpx, extensions, docs);
  console.log({ caller: 'pruneAndSaveImportedGpx / pruned', docs });
  try {
    const result = await putAll(docs);
    console.log(JSON.stringify(result));
    if (id !== 'new') {
      put(id, 'gpx', (doc) => doc, {});
    }
  } catch (err) {
    console.error(`error: ${err}`);
  }
};

export const getAllGpxes = async () => {
  try {
    return (await get('gpx')).doc;
  } catch {
    return [];
  }
};

export const getAllGpxesWithSummary = async () => {
  const allGpxes = await getAllGpxes();
  const result = await Promise.all(
    allGpxes.map(async (id: string) => {
      const gpxDoc = await get(id);
      //      console.log({ caller: 'getAllGpxesWithSummary', gpx: gpxDoc });
      return {
        id,
        name: gpxDoc.doc.metadata?.name,
        creator: gpxDoc.doc.$?.creator,
      };
    })
  );
  console.log({ caller: 'getAllGpxesWithSummary', result });
  return result;
};

export const appendToArray = (target: any, key: string, value: any) => {
  if (!(key in target)) {
    target[key] = <any>[];
  }
  target[key].push(value);
};

export const getFullGpx = async (params: any) => {
  const { id } = params;
  const docs = await getFamily(id, { include_docs: true });
  let target: any[];
  let gpx: Gpx | undefined = undefined;
  docs.rows.forEach((row: any) => {
    // level 0
    if (row.doc.type === 'gpx') {
      target = [row.doc.doc];
      gpx = row.doc.doc;
    }
    //level 1
    if (
      row.doc.type === 'wpt' ||
      row.doc.type === 'rte' ||
      row.doc.type === 'trk' ||
      row.doc.type === 'extensions'
    ) {
      target.splice(1);
      appendToArray(target.at(-1), row.doc.type, row.doc.doc);
      target.push(row.doc.doc);
    }
    // level 2
    if (row.doc.type === 'rtept' || row.doc.type === 'trkseg') {
      target.splice(2);
      appendToArray(target.at(-1), row.doc.type, row.doc.doc);
      target.push(row.doc.doc);
    }
    // level 3
    if (row.doc.type === 'trkpt') {
      appendToArray(target.at(-1), row.doc.type, row.doc.doc);
    }
  });
  return gpx;
};

export const getGpx = async (params: any) => {
  const { id } = params;

  if (id === 'new') {
    const newGpx = cloneDeep(emptyGpx);
    newGpx.metadata!.time = new Date().toISOString();
    return newGpx;
  }

  const docs = await getFamily(id, { include_docs: true });
  let target: any[];
  let gpx: Gpx | undefined = undefined;
  docs.rows.forEach((row: any) => {
    // level 0
    if (row.doc.type === 'gpx') {
      target = [row.doc.doc];
      gpx = row.doc.doc;
    }
    //level 1 (extensions)
    if (row.doc.type === 'extensions') {
      target.splice(1);
      appendToArray(target.at(-1), row.doc.type, row.doc.doc);
      target.push(row.doc.doc);
    }
    //level 1 (others)
    if (
      row.doc.type === 'wpt' ||
      row.doc.type === 'rte' ||
      row.doc.type === 'trk'
    ) {
      target.splice(1);
      appendToArray(target.at(-1), row.doc.type, row.doc._id);
      target.push(row.doc.doc);
    }
  });
  return gpx;
};

export const getNextGpxTrkId = async (gpxId: string) => {
  const docs = await getFamily(gpxId, { include_docs: true });
  const gpxIdObj = getUri('gpx', gpxId);
  console.log({ caller: 'getNextGpxTrkId', gpxId, gpxIdObj, docs });
  let trkId = '';
  docs.rows.forEach((row: any) => {
    if (row.doc.type === 'trk') {
      trkId = row.doc._id;
    }
  });
  if (trkId !== '') {
    const trkIdObj = getUri('trk', trkId);
    return getUri('trk', { gpx: gpxIdObj.gpx, trk: trkIdObj.trk + 1 });
  }
  return getUri('trk', { gpx: gpxIdObj.gpx, trk: 0 });
};

export const appendTrk = async (params: any) => {
  const { gpxId, trk } = params;
  const trkId = await getNextGpxTrkId(gpxId);
  console.log({ caller: 'appendTrk', gpxId, trk, trkId });
  await put(trkId, 'trk', (doc) => trk, {});
  return trkId;
};

export const putGpx = async (params: any) => {
  let { id, gpx } = params;

  if (id === 'new') {
    id = getUri('gpx', {
      gpx: intToGpxId(new Date(gpx.metadata.time).valueOf()),
    });
  }

  const extensions = gpx?.extensions;

  gpx.extensions = undefined;
  gpx.wpt = undefined;
  gpx.trk = undefined;
  gpx.rte = undefined;

  await put(id, 'gpx', (doc) => gpx, gpx);
  if (extensions !== undefined) {
    await put(
      `${id}/4extensions`,
      'extensions',
      (doc) => extensions,
      extensions
    );
  }
  return id;
};