import { Mission } from "../Aerofly/Mission.js";
import { LonLatArea } from "../World/LonLat.js";
import { LonLatDate } from "../World/LonLatDate.js";
import { Outputtable } from "./Outputtable.js";
import { SkyVector } from "./SkyVector.js";

export class Markdown extends Outputtable {
  protected _lonLatArea: LonLatArea;

  constructor(protected mission: Mission) {
    super();
    this._lonLatArea = new LonLatArea(mission.origin_lon_lat);
    this.mission.checkpoints.forEach((c) => {
      this._lonLatArea.push(c.lon_lat);
    });
  }

  outputLine(fields: string[]): string {
    return "| " + fields.join(" | ") + " |\n";
  }

  removeFrequencies(fields: string[], hasFrequencies: boolean) {
    if (!hasFrequencies) {
      fields.splice(2, 1);
    }
    return fields;
  }

  toString(filename = "custom_missions_user.tmc"): string {
    const m = this.mission;
    const s = new SkyVector(m);

    const total_distance = m.distance;
    const total_time_enroute = m.time_enroute;
    const time = new Date(m.conditions.time.dateTime);
    const sunStateOrigin = new LonLatDate(m.origin_lon_lat, time).sunState;
    time.setSeconds(time.getSeconds() + total_time_enroute * 3600);
    const sunStateDestination = new LonLatDate(m.destination_lon_lat, time).sunState;
    const zoomLevel = this._lonLatArea.getZoomLevel();
    const center = this._lonLatArea.center;
    const hasFrequencies = m.hasFrequencies;
    let markdown = `\
# ${m.title}

${m.description}

> This is a custom missions file for [Aerofly FS 4](https://www.aerofly.com/). Download [\`${filename}\`](./${filename}) and see [installation instructions](https://fboes.github.io/aerofly-missions/docs/generic-installation.html) on how to get started.

## Flight briefing

Check your [Sky Vector Flight Plan](${s.toString()}). You may also want to take a look at [Google Maps](https://www.google.com/maps/@?api=1&map_action=map&center=${
      center.lat
    },${
      center.lon
    }&zoom=${zoomLevel}&basemap=terrain) / [OpenStreetMap](https://www.openstreetmap.org/#map=${zoomLevel}/${
      center.lat
    }/${center.lon}).

### Aircraft

| Aircraft type | Identification | Cruising Speed | Cruising Altitude |
| ------------- | -------------- | -------------: | ----------------: |
| ${m.aircraft_icao.padEnd(13)} | ${m.callsign.padEnd(14)} |        ${Outputtable.padThree(
      m.cruise_speed
    )} kts | ${m.cruise_altitude_ft.toLocaleString("en").padStart(14)} ft |

### Weather

| Wind         | Clouds           | Visibility       | Flight rules |
| ------------ | ---------------- | ---------------- | ------------ |
| ${this.getWind(m.conditions)} kts | ${
      m.conditions.cloud.cover_symbol +
      " " +
      m.conditions.cloud.cover_code +
      " @ " +
      m.conditions.cloud.height_feet.toLocaleString("en") +
      " ft"
    } | ${
      m.conditions.visibility.toLocaleString("en") + " m / " + Math.round(m.conditions.visibility_sm)
    } SM | ${m.conditions.getFlightCategory(m.origin_country !== "US")} |

### Airports

|             | Location                                 | Country | Date & time       | Local solar time | Sun |
| ----------- | ---------------------------------------- | ------- | ----------------- | ---------------- | --- |
| Departure   | [${m.origin_icao}](${SkyVector.airportLink(m.origin_icao)}) | ${
      m.origin_country
    }      | ${this.outputDateTime(m.conditions.time.dateTime)} | ${
      sunStateOrigin.localSolarTime
    } | ${this.outputSunState(sunStateOrigin)} |
| Destination | [${m.destination_icao}](${SkyVector.airportLink(m.destination_icao)}) | ${
      m.destination_country
    }      | ${this.outputDateTime(time)} | ${sunStateDestination.localSolarTime.padEnd(
      16,
      " "
    )} | ${this.outputSunState(sunStateDestination)} |

### Checkpoints

`;
    markdown += this.outputLine(
      this.removeFrequencies(
        ["#  ", "Waypoint ", "Frequency ", "Altitude ", "DTK ", "HDG ", "Distance", "    ETE"],
        hasFrequencies
      )
    );
    markdown += this.outputLine(
      this.removeFrequencies(
        [":-:", "---------", "---------:", "--------:", "---:", "---:", "-------:", "------:"],
        hasFrequencies
      )
    );

    m.checkpoints.forEach((c, i) => {
      let frqString = "";
      if (c.frequency) {
        frqString =
          c.frequency_unit === "M" ? Outputtable.pad(c.frequency_mhz, 6, 2) : c.frequency_khz.toFixed().padStart(6);
        frqString += " " + c.frequency_unit + "Hz";
      }

      markdown += this.outputLine(
        this.removeFrequencies(
          [
            Outputtable.pad(i + 1, 2, 0, "0") + ".",
            c.name.padEnd(9, " "),
            c.frequency ? frqString : " ".repeat(10),
            c.lon_lat.altitude_m ? Outputtable.pad(c.lon_lat.altitude_ft, 6, 0) + " ft" : " ".repeat(9),
            c.direction >= 0 ? Outputtable.padThree(c.direction_magnetic) + "°" : " ".repeat(4),
            c.heading >= 0 ? Outputtable.padThree(c.heading_magnetic) + "°" : " ".repeat(4),
            c.distance >= 0 ? Outputtable.pad(c.distance, 5, 1) + " NM" : " ".repeat(8),
            c.time_enroute > 0 ? Outputtable.convertHoursToMinutesString(c.time_enroute) : " ".repeat(7),
          ],
          hasFrequencies
        )
      );
    });
    markdown += this.outputLine(
      this.removeFrequencies(
        [
          "   ",
          "**Total**",
          "          ",
          "         ",
          "    ",
          "    ",
          "**" + Outputtable.pad(total_distance, 4, 1) + " NM**",
          "**" + Outputtable.convertHoursToMinutesString(total_time_enroute) + "**",
        ],
        hasFrequencies
      )
    );

    markdown += `
---

[Previous mission](#) • [Mission overview](#) • [Next mission](#)

Generated via [Aerofly Missionsgerät](https://github.com/fboes/aerofly-missions)
`;

    return markdown;
  }
}