import type { Request, Response } from "express";
import { GlobalDeviceRepository } from "../../db/repositories/global-device.repository.js";
import { ProjectDeviceRepository } from "../../db/repositories/project-device.repository.js";
import { projectDeviceSyncService } from "../composition/project-device-sync-service.js";
import {
  createProjectDeviceSchema,
  disconnectProjectDeviceRowsSchema,
  reconnectProjectDeviceRowsSchema,
  restoreProjectDeviceRowsSchema,
  synchronizeProjectDeviceRowsSchema,
  updateProjectDeviceSchema,
} from "../../shared/validation/project-device.schemas.js";

const globalDeviceRepository = new GlobalDeviceRepository();
const projectDeviceRepository = new ProjectDeviceRepository();
export async function listProjectDevicesByProject(req: Request, res: Response) {
  const { projectId } = req.params;
  if (typeof projectId !== "string") {
    return res.status(400).json({ error: "Invalid projectId" });
  }
  const rows = await projectDeviceRepository.listByProject(projectId);
  return res.json(rows);
}

export async function createProjectDevice(req: Request, res: Response) {
  const { projectId } = req.params;
  if (typeof projectId !== "string") {
    return res.status(400).json({ error: "Invalid projectId" });
  }
  const parsed = createProjectDeviceSchema.safeParse(req.body);
  if (!parsed.success) {
    return res.status(400).json({ error: parsed.error.flatten() });
  }
  const created = await projectDeviceRepository.create(projectId, parsed.data);
  return res.status(201).json(created);
}

export async function updateProjectDevice(req: Request, res: Response) {
  const { projectId, projectDeviceId } = req.params;
  if (typeof projectId !== "string" || typeof projectDeviceId !== "string") {
    return res.status(400).json({ error: "Invalid parameters" });
  }

  const parsed = updateProjectDeviceSchema.safeParse(req.body);
  if (!parsed.success) {
    return res.status(400).json({ error: parsed.error.flatten() });
  }

  await projectDeviceRepository.update(projectId, projectDeviceId, parsed.data);
  // Linked rows are synchronized only through the explicit review flow.
  // Updating a project device must never silently overwrite local circuit-list values.
  const row = await projectDeviceRepository.findById(projectId, projectDeviceId);
  if (!row) {
    return res.status(404).json({ error: "Project device not found" });
  }
  return res.json(row);
}

export async function deleteProjectDevice(req: Request, res: Response) {
  const { projectId, projectDeviceId } = req.params;
  if (typeof projectId !== "string" || typeof projectDeviceId !== "string") {
    return res.status(400).json({ error: "Invalid parameters" });
  }

  await projectDeviceRepository.delete(projectId, projectDeviceId);
  return res.status(204).send();
}

export async function copyGlobalDeviceToProject(req: Request, res: Response) {
  const { projectId, globalDeviceId } = req.params;
  if (typeof projectId !== "string" || typeof globalDeviceId !== "string") {
    return res.status(400).json({ error: "Invalid parameters" });
  }

  const source = await globalDeviceRepository.findById(globalDeviceId);
  if (!source) {
    return res.status(404).json({ error: "Global device not found" });
  }

  const created = await projectDeviceRepository.create(projectId, {
    name: source.name,
    displayName: source.displayName,
    phaseType: source.phaseCount === 3 ? "three_phase" : "single_phase",
    category: source.category ?? undefined,
    quantity: source.quantity,
    powerPerUnit: source.installedPowerPerUnitKw,
    simultaneityFactor: source.demandFactor,
    cosPhi: source.powerFactor ?? undefined,
    remark: source.note ?? undefined,
    voltageV: source.voltageV ?? undefined,
  });

  return res.status(201).json(created);
}

export async function getProjectDeviceSyncPreview(req: Request, res: Response) {
  const { projectId, projectDeviceId } = req.params;
  if (typeof projectId !== "string" || typeof projectDeviceId !== "string") {
    return res.status(400).json({ error: "Invalid parameters" });
  }
  try {
    const preview = await projectDeviceSyncService.getPreview(projectId, projectDeviceId);
    return res.json(preview);
  } catch (error) {
    return res.status(400).json({ error: error instanceof Error ? error.message : "Failed to load sync preview." });
  }
}

export async function synchronizeProjectDeviceRows(req: Request, res: Response) {
  const { projectId, projectDeviceId } = req.params;
  if (typeof projectId !== "string" || typeof projectDeviceId !== "string") {
    return res.status(400).json({ error: "Invalid parameters" });
  }
  const parsed = synchronizeProjectDeviceRowsSchema.safeParse(req.body);
  if (!parsed.success) {
    return res.status(400).json({ error: parsed.error.flatten() });
  }
  try {
    const result = await projectDeviceSyncService.synchronize(
      projectId,
      projectDeviceId,
      parsed.data.rowIds,
      parsed.data.fields
    );
    return res.json(result);
  } catch (error) {
    return res.status(400).json({ error: error instanceof Error ? error.message : "Failed to synchronize rows." });
  }
}

export async function restoreProjectDeviceRows(req: Request, res: Response) {
  const { projectId, projectDeviceId } = req.params;
  if (typeof projectId !== "string" || typeof projectDeviceId !== "string") {
    return res.status(400).json({ error: "Invalid parameters" });
  }
  const parsed = restoreProjectDeviceRowsSchema.safeParse(req.body);
  if (!parsed.success) {
    return res.status(400).json({ error: parsed.error.flatten() });
  }
  try {
    const preview = await projectDeviceSyncService.restore(projectId, projectDeviceId, parsed.data.rows);
    return res.json(preview);
  } catch (error) {
    return res.status(400).json({ error: error instanceof Error ? error.message : "Failed to restore rows." });
  }
}

export async function disconnectProjectDeviceRows(req: Request, res: Response) {
  const { projectId, projectDeviceId } = req.params;
  if (typeof projectId !== "string" || typeof projectDeviceId !== "string") {
    return res.status(400).json({ error: "Invalid parameters" });
  }
  const parsed = disconnectProjectDeviceRowsSchema.safeParse(req.body);
  if (!parsed.success) {
    return res.status(400).json({ error: parsed.error.flatten() });
  }
  try {
    const result = await projectDeviceSyncService.disconnect(projectId, projectDeviceId, parsed.data.rowIds);
    return res.json(result);
  } catch (error) {
    return res.status(400).json({ error: error instanceof Error ? error.message : "Failed to disconnect rows." });
  }
}

export async function reconnectProjectDeviceRows(req: Request, res: Response) {
  const { projectId, projectDeviceId } = req.params;
  if (typeof projectId !== "string" || typeof projectDeviceId !== "string") {
    return res.status(400).json({ error: "Invalid parameters" });
  }
  const parsed = reconnectProjectDeviceRowsSchema.safeParse(req.body);
  if (!parsed.success) {
    return res.status(400).json({ error: parsed.error.flatten() });
  }
  try {
    const preview = await projectDeviceSyncService.reconnect(projectId, projectDeviceId, parsed.data.rowIds);
    return res.json(preview);
  } catch (error) {
    return res.status(400).json({ error: error instanceof Error ? error.message : "Failed to reconnect rows." });
  }
}