import type { AutomationRule } from "@prisma/client";
import { prisma } from "@/lib/db";
import {
  AUTOMATION_TASK_TYPES,
  DEFAULT_DAILY_CAP,
  type AutomationMode,
  type AutomationTaskType,
} from "./types";

const DEFAULT_SCHEDULE: Record<AutomationTaskType, string> = {
  scan: "0 */4 * * *",
  generate: "10 */4 * * *",
  publish: "0 10,15,20 * * *",
  outreach: "30 */2 * * *",
  engagement: "*/30 * * * *",
};

/** 取得帳號的所有任務規則，缺的補上預設（manual / 未啟用）。 */
export async function getRulesForAccount(accountId: string): Promise<AutomationRule[]> {
  const existing = await prisma.automationRule.findMany({ where: { accountId } });
  const byType = new Map(existing.map((r) => [r.taskType, r]));

  const missing = AUTOMATION_TASK_TYPES.filter((t) => !byType.has(t));
  if (missing.length > 0) {
    await prisma.automationRule.createMany({
      data: missing.map((taskType) => ({
        accountId,
        taskType,
        mode: "manual",
        dailyCap: DEFAULT_DAILY_CAP[taskType],
        schedule: DEFAULT_SCHEDULE[taskType],
        enabled: false,
      })),
    });
  }

  return prisma.automationRule.findMany({
    where: { accountId },
    orderBy: { taskType: "asc" },
  });
}

export async function upsertRule(
  accountId: string,
  taskType: AutomationTaskType,
  data: Partial<{ mode: AutomationMode; dailyCap: number; schedule: string; enabled: boolean }>
): Promise<AutomationRule> {
  return prisma.automationRule.upsert({
    where: { accountId_taskType: { accountId, taskType } },
    create: {
      accountId,
      taskType,
      mode: data.mode ?? "manual",
      dailyCap: data.dailyCap ?? DEFAULT_DAILY_CAP[taskType],
      schedule: data.schedule ?? DEFAULT_SCHEDULE[taskType],
      enabled: data.enabled ?? false,
    },
    update: {
      ...(data.mode !== undefined && { mode: data.mode }),
      ...(data.dailyCap !== undefined && { dailyCap: data.dailyCap }),
      ...(data.schedule !== undefined && { schedule: data.schedule }),
      ...(data.enabled !== undefined && { enabled: data.enabled }),
    },
  });
}