/**
 * @file Apotheosis route handling the apotheosis reset mechanic.
 * @copyright nhcarrigan
 * @license Naomi's Public License
 * @author Naomi Carrigan
 */
/* eslint-disable max-lines-per-function -- Route handler requires many steps */
/* eslint-disable max-statements -- Route handler requires many statements */

/* eslint-disable stylistic/max-len -- Description string cannot be shortened */
import { Hono } from "hono";
import { prisma } from "../db/client.js";
import { authMiddleware } from "../middleware/auth.js";
import {
  buildPostApotheosisState,
  isEligibleForApotheosis,
} from "../services/apotheosis.js";
import { logger } from "../services/logger.js";
import {
  grantApotheosisRole,
  postMilestoneWebhook,
} from "../services/webhook.js";
import type { HonoEnvironment } from "../types/hono.js";
import type { GameState } from "@elysium/types";

const apotheosisRouter = new Hono<HonoEnvironment>();

apotheosisRouter.use("*", authMiddleware);

apotheosisRouter.post("/", async(context) => {
  try {
    const discordId = context.get("discordId");

    const record = await prisma.gameState.findUnique({ where: { discordId } });
    if (!record) {
      return context.json({ error: "No save found" }, 404);
    }

    const rawState: unknown = record.state;
    /* eslint-disable-next-line @typescript-eslint/consistent-type-assertions -- Prisma returns JsonValue; cast to GameState */
    const state = rawState as GameState;

    if (!isEligibleForApotheosis(state)) {
      return context.json(
        {
          error:
            "Not eligible for Apotheosis — purchase all Transcendence upgrades first",
        },
        400,
      );
    }

    // Capture current-run stats before the nuclear reset
    // eslint-disable-next-line capitalized-comments -- v8 ignore
    /* v8 ignore next 9 -- @preserve */
    const runBossesDefeated = state.bosses.filter((b) => {
      return b.status === "defeated";
    }).length;
    const runQuestsCompleted = state.quests.filter((q) => {
      return q.status === "completed";
    }).length;
    const runAdventurersRecruited = state.adventurers.reduce((sum, a) => {
      return sum + a.count;
    }, 0);

    // eslint-disable-next-line capitalized-comments -- v8 ignore
    /* v8 ignore next 3 -- @preserve */
    const runAchievementsUnlocked = state.achievements.filter((a) => {
      return a.unlockedAt !== null;
    }).length;

    const { updatedState, updatedApotheosisData } = buildPostApotheosisState(
      state,
      state.player.characterName,
    );

    const now = Date.now();
    await prisma.gameState.update({
      /* eslint-disable-next-line @typescript-eslint/consistent-type-assertions -- Prisma requires object */
      data:  { state: updatedState as object, updatedAt: now },
      where: { discordId },
    });

    await prisma.player.update({
      data: {
        characterName: state.player.characterName,

        lastSavedAt: now,

        lifetimeAchievementsUnlocked: { increment: runAchievementsUnlocked },

        lifetimeAdventurersRecruited: { increment: runAdventurersRecruited },

        lifetimeBossesDefeated: { increment: runBossesDefeated },

        lifetimeClicks: { increment: state.player.totalClicks },

        // Accumulate into lifetime totals
        lifetimeGoldEarned: { increment: state.player.totalGoldEarned },

        lifetimeQuestsCompleted: { increment: runQuestsCompleted },

        totalClicks:     0,
        // Reset current-run counters
        totalGoldEarned: 0,
      },
      where: { discordId },
    });

    const apotheosisCount = updatedApotheosisData.count;
    void logger.metric("apotheosis", 1, { apotheosisCount, discordId });
    void grantApotheosisRole(discordId);
    void postMilestoneWebhook(discordId, "apotheosis", {
      apotheosis:    updatedApotheosisData.count,
      prestige:      updatedState.prestige.count,
      // eslint-disable-next-line capitalized-comments -- v8 ignore
      /* v8 ignore next -- @preserve */
      transcendence: updatedState.transcendence?.count ?? 0,
    });

    return context.json({ apotheosisCount: updatedApotheosisData.count });
  } catch (error) {
    void logger.error(
      "apotheosis",
      error instanceof Error
        ? error
        : new Error(String(error)),
    );
    return context.json({ error: "Internal server error" }, 500);
  }
});

export { apotheosisRouter };