import {
  asset,
  emblemURL,
  equipmentPriceMatrix,
  getAccountInfo,
  getClanAccountInfo,
  getTankStats,
  TANK_ICONS,
  TankType,
  TIER_ROMAN_NUMERALS,
} from "@blitzkit/core";
import { literals } from "@blitzkit/i18n";
import { escapeMarkdown, Locale } from "discord.js";
import { CommandWrapper } from "../components/CommandWrapper";
import { TitleBar } from "../components/TitleBar";
import { resolveTankId } from "../core/blitz/resolveTankId";
import { buildTechTreeLine } from "../core/blitzkit/buildTechTreeLine";
import { iconPng } from "../core/blitzkit/iconPng";
import { tankDefinitions } from "../core/blitzkit/nonBlockingPromises";
import { resolveAncestry } from "../core/blitzkit/resolveAncestry";
import { tankIconPng } from "../core/blitzkit/tankIconPng";
import { addUsernameChoices } from "../core/discord/addUsernameChoices";
import { autocompleteTanks } from "../core/discord/autocompleteTanks";
import { createLocalizedCommand } from "../core/discord/createLocalizedCommand";
import { localizationObject } from "../core/discord/localizationObject";
import { resolvePlayerFromCommand } from "../core/discord/resolvePlayerFromCommand";
import { translator } from "../core/localization/translator";
import { type CommandRegistry } from "../events/interactionCreate";
import { theme } from "../stitches.config";

export const researchCommand = new Promise<CommandRegistry>((resolve) => {
  const { strings } = translator(Locale.EnglishUS);

  resolve({
    command: createLocalizedCommand("research")
      .addStringOption((option) =>
        option
          .setName(strings.bot.commands.research.options.target_tank.name)
          .setNameLocalizations(
            localizationObject(
              (strings) =>
                strings.bot.commands.research.options.target_tank.name,
              undefined,
              true
            )
          )
          .setDescription(
            strings.bot.commands.research.options.target_tank.description
          )
          .setDescriptionLocalizations(
            localizationObject(
              (strings) =>
                strings.bot.commands.research.options.target_tank.description
            )
          )
          .setAutocomplete(true)
          .setRequired(true)
      )
      .addStringOption((option) =>
        option
          .setName(strings.bot.commands.research.options.starting_tank.name)
          .setNameLocalizations(
            localizationObject(
              (strings) =>
                strings.bot.commands.research.options.starting_tank.name,
              undefined,
              true
            )
          )
          .setDescription(
            strings.bot.commands.research.options.starting_tank.description
          )
          .setDescriptionLocalizations(
            localizationObject(
              (strings) =>
                strings.bot.commands.research.options.starting_tank.description
            )
          )
          .setAutocomplete(true)
          .setRequired(false)
      )
      .addStringOption(addUsernameChoices),

    async handler(interaction) {
      const { strings, unwrap } = translator(interaction.locale);
      const awaitedTankDefinitions = await tankDefinitions;
      const targetTankId = await resolveTankId(
        interaction.options.getString("target-tank", true),
        interaction.locale,
        true
      );
      const startingTankRaw = interaction.options.getString("starting-tank");
      const targetTank = awaitedTankDefinitions.tanks[targetTankId];
      const { id, region } = await resolvePlayerFromCommand(interaction);
      let startingTankId: number;
      const targetTankAncestry = await resolveAncestry(targetTankId);

      if (startingTankRaw) {
        startingTankId = await resolveTankId(
          startingTankRaw,
          interaction.locale,
          true
        );

        if (targetTankId === startingTankId) {
          return literals(
            strings.bot.commands.research.errors.start_end_equal,
            { tank: escapeMarkdown(unwrap(targetTank.name)) }
          );
        }

        const startingTank = awaitedTankDefinitions.tanks[startingTankId];

        if (startingTank.tier > targetTank.tier) {
          return literals(strings.bot.commands.research.errors.unordered, {
            tank_1: escapeMarkdown(unwrap(startingTank.name)),
            tank_2: escapeMarkdown(unwrap(targetTank.name)),
          });
        }

        if (!targetTankAncestry.includes(startingTankId)) {
          return literals(
            strings.bot.commands.research.errors.tanks_not_on_line,
            {
              tank_1: escapeMarkdown(unwrap(targetTank.name)),
              tank_2: escapeMarkdown(unwrap(startingTank.name)),
            }
          );
        }
      } else {
        if (targetTank.type !== TankType.RESEARCHABLE) {
          return literals(strings.bot.commands.research.errors.non_tech_tree, {
            tank: escapeMarkdown(unwrap(targetTank.name)),
          });
        }

        if (targetTank.tier === 1) {
          return literals(strings.bot.commands.research.errors.tier_1, {
            tank: escapeMarkdown(unwrap(targetTank.name)),
          });
        }

        const tankStats = await getTankStats(region, id);

        if (tankStats === null) {
          return strings.bot.common.errors.no_tank_stats;
        }

        if (tankStats.some(({ tank_id }) => tank_id === targetTankId)) {
          return literals(
            strings.bot.commands.research.errors.already_researched,
            { tank: escapeMarkdown(unwrap(targetTank.name)) }
          );
        }

        const foundAncestor = targetTankAncestry.find(
          (id) =>
            awaitedTankDefinitions.tanks[id].tier === 1 ||
            tankStats.some(({ tank_id }) => tank_id === id)
        );

        if (foundAncestor === undefined) {
          throw new Error("No first owned tech tree found.");
        }

        startingTankId = foundAncestor;
      }

      const techTreeLine = await buildTechTreeLine(
        startingTankId,
        targetTankId
      );

      const line = [...techTreeLine, startingTankId].reverse();
      const { nickname } = await getAccountInfo(region, id);
      const clan = (await getClanAccountInfo(region, id, ["clan"]))?.clan;
      const clanImage = clan ? emblemURL(clan.emblem_set_id) : undefined;
      const costs = await Promise.all(
        line.map(async (id) => {
          const tank = awaitedTankDefinitions.tanks[id];
          const turretXps = new Map<number, number>();
          const gunXps = new Map<number, number>();
          const engineXps = new Map<number, number>();
          const trackXps = new Map<number, number>();

          tank.turrets.forEach((turret) => {
            if (
              turret.research_cost !== undefined &&
              typeof turret.research_cost.research_cost_type!.value === "number"
            ) {
              turretXps.set(
                turret.id,
                turret.research_cost.research_cost_type!.value
              );
            }

            turret.guns.forEach((gun) => {
              if (
                gun.research_cost !== undefined &&
                typeof gun.research_cost.research_cost_type!.value === "number"
              ) {
                gunXps.set(gun.id, gun.research_cost.research_cost_type!.value);
              }
            });
          });

          tank.engines.forEach((engine) => {
            if (
              engine.research_cost !== undefined &&
              typeof engine.research_cost.research_cost_type!.value === "number"
            ) {
              engineXps.set(
                engine.id,
                engine.research_cost.research_cost_type!.value
              );
            }
          });

          tank.tracks.forEach((track) => {
            if (
              track.research_cost !== undefined &&
              typeof track.research_cost.research_cost_type!.value === "number"
            ) {
              trackXps.set(
                track.id,
                track.research_cost.research_cost_type!.value
              );
            }
          });

          let moduleXp = 0;
          turretXps.forEach((value) => {
            moduleXp += value;
          });
          gunXps.forEach((value) => {
            moduleXp += value;
          });
          engineXps.forEach((value) => {
            moduleXp += value;
          });
          trackXps.forEach((value) => {
            moduleXp += value;
          });

          return {
            research: tank.research_cost!.research_cost_type!.value as number,
            upgrades: moduleXp,
            purchase: tank.price.value,
            equipment: equipmentPriceMatrix[tank.tier].reduce(
              (a, b) => a + 3 * b,
              0
            ),
          };
        })
      );

      const image = (
        <CommandWrapper>
          <TitleBar
            title={nickname}
            image={clanImage}
            description={`${strings.bot.commands.research.body.subtitle} • ${
              targetTank.name
            }`}
          />

          <div
            style={{
              display: "flex",
              flexDirection: "column",
              gap: 8,
            }}
          >
            <div
              style={{
                display: "flex",
                borderRadius: 4,
                backgroundColor: theme.colors.appBackground2,
                border: theme.borderStyles.subtle,
              }}
            >
              <div style={{ width: 48 }}></div>

              <div
                style={{
                  flex: 1,
                  display: "flex",
                  alignItems: "center",
                  justifyContent: "center",
                  position: "relative",
                  right: 24,
                }}
              >
                <span
                  style={{
                    color: theme.colors.textHighContrast,
                  }}
                >
                  {strings.bot.commands.research.body.total}
                </span>
              </div>

              <div
                style={{
                  flex: 1,
                  display: "flex",
                  flexDirection: "column",
                  justifyContent: "center",
                  gap: 8,
                  padding: "16px 0",
                }}
              >
                <div
                  style={{
                    display: "flex",
                    gap: 4,
                    alignItems: "center",
                  }}
                >
                  <img
                    alt="XP icon"
                    src={await iconPng(asset("icons/currencies/xp.webp"))}
                    width={16}
                    height={16}
                  />
                  <span
                    style={{
                      fontSize: 16,
                      color: theme.colors.textHighContrast,
                    }}
                  >
                    Experience:{" "}
                    {costs
                      .reduce((a, b) => a + (b.research ?? 0) + b.upgrades, 0)
                      .toLocaleString(interaction.locale)}
                  </span>
                </div>

                <div
                  style={{
                    display: "flex",
                    gap: 4,
                    alignItems: "center",
                  }}
                >
                  <img
                    alt="Silver icon"
                    src={await iconPng(asset("icons/currencies/silver.webp"))}
                    width={16}
                    height={16}
                  />
                  <span
                    style={{
                      fontSize: 16,
                      color: theme.colors.textHighContrast,
                    }}
                  >
                    Purchase:{" "}
                    {costs
                      .reduce((a, b) => a + b.purchase, 0)
                      .toLocaleString(interaction.locale)}
                  </span>
                </div>

                <div
                  style={{
                    display: "flex",
                    gap: 4,
                    alignItems: "center",
                  }}
                >
                  <img
                    alt="Silver icon"
                    src={await iconPng(asset("icons/currencies/silver.webp"))}
                    width={16}
                    height={16}
                  />
                  <span
                    style={{
                      fontSize: 16,
                      color: theme.colors.textHighContrast,
                    }}
                  >
                    Equipment:{" "}
                    {costs
                      .reduce((a, b) => a + b.equipment, 0)
                      .toLocaleString(interaction.locale)}
                  </span>
                </div>
              </div>
            </div>

            {await Promise.all(
              line.map(async (id, index) => {
                const tank = awaitedTankDefinitions.tanks[id];

                return (
                  <div
                    key={id}
                    style={{
                      display: "flex",
                      borderRadius: 4,
                      backgroundColor: theme.colors.appBackground2,
                      border: theme.borderStyles.subtle,
                    }}
                  >
                    <div
                      style={{
                        width: 48,
                        display: "flex",
                        alignItems: "center",
                        justifyContent: "center",
                      }}
                    >
                      <span
                        style={{
                          color: theme.colors.textLowContrast,
                          fontSize: 16,
                        }}
                      >
                        {TIER_ROMAN_NUMERALS[tank.tier]}
                      </span>
                    </div>

                    <div
                      style={{
                        flex: 1,
                        display: "flex",
                        position: "relative",
                        right: "5%",
                      }}
                    >
                      <img
                        alt="Tank icon"
                        src={await tankIconPng(id)}
                        style={{
                          height: 100,
                          width: 100,
                          objectFit: "contain",
                          position: "absolute",
                          left: "25%",
                          top: 0,
                        }}
                      />

                      <div
                        style={{
                          display: "flex",
                          gap: 4,
                          alignItems: "center",
                          justifyContent: "center",
                          position: "absolute",
                          bottom: 8,
                          left: "50%",
                          transform: "translateX(-50%)",
                        }}
                      >
                        <img
                          alt={unwrap(tank.name)}
                          src={TANK_ICONS[tank.class]}
                          width={16}
                          height={16}
                        />

                        <span
                          style={{
                            color: theme.colors.textHighContrast,
                          }}
                        >
                          {unwrap(tank.name)}
                        </span>
                      </div>
                    </div>

                    <div
                      style={{
                        flex: 1,
                        display: "flex",
                        flexDirection: "column",
                        justifyContent: "center",
                        gap: 8,
                        padding: "16px 0",
                      }}
                    >
                      <div
                        style={{
                          display: "flex",
                          gap: 4,
                          alignItems: "center",
                        }}
                      >
                        <img
                          alt="XP icon"
                          src={await iconPng(asset("icons/currencies/xp.webp"))}
                          width={16}
                          height={16}
                        />
                        <span
                          style={{
                            fontSize: 16,
                            color: theme.colors.textHighContrast,
                          }}
                        >
                          {literals(
                            strings.bot.commands.research.body.research,
                            {
                              cost: costs[index].research?.toLocaleString(
                                interaction.locale
                              ),
                            }
                          )}
                        </span>
                      </div>

                      {costs[index].upgrades > 0 && (
                        <div
                          style={{
                            display: "flex",
                            gap: 4,
                            alignItems: "center",
                          }}
                        >
                          <img
                            alt="Free XP icon"
                            src={await iconPng(
                              asset("icons/currencies/free-xp.webp")
                            )}
                            width={16}
                            height={16}
                          />
                          <span
                            style={{
                              fontSize: 16,
                              color: theme.colors.textHighContrast,
                            }}
                          >
                            {literals(
                              strings.bot.commands.research.body.upgrades,
                              { cost: costs[index].upgrades.toLocaleString() }
                            )}
                          </span>
                        </div>
                      )}

                      <div
                        style={{
                          display: "flex",
                          gap: 4,
                          alignItems: "center",
                        }}
                      >
                        <img
                          alt="Silver icon"
                          src={await iconPng(
                            asset("icons/currencies/silver.webp")
                          )}
                          width={16}
                          height={16}
                        />
                        <span
                          style={{
                            fontSize: 16,
                            color: theme.colors.textHighContrast,
                          }}
                        >
                          {literals(
                            strings.bot.commands.research.body.purchase,
                            {
                              cost: costs[index].purchase.toLocaleString(
                                interaction.locale
                              ),
                            }
                          )}
                        </span>
                      </div>

                      <div
                        style={{
                          display: "flex",
                          gap: 4,
                          alignItems: "center",
                        }}
                      >
                        <img
                          alt="Silver icon"
                          src={await iconPng(
                            asset("icons/currencies/silver.webp")
                          )}
                          width={16}
                          height={16}
                        />
                        <span
                          style={{
                            fontSize: 16,
                            color: theme.colors.textHighContrast,
                          }}
                        >
                          {literals(
                            strings.bot.commands.research.body.equipment,
                            {
                              cost: costs[index].equipment.toLocaleString(
                                interaction.locale
                              ),
                            }
                          )}
                        </span>
                      </div>
                    </div>
                  </div>
                );
              })
            )}
          </div>
        </CommandWrapper>
      );

      return startingTankRaw
        ? image
        : [strings.bot.commands.research.body.estimation, image];
    },

    autocomplete(interaction) {
      autocompleteTanks(interaction, true, ["target-tank", "starting-tank"]);
    },
  });
});