import { BlueprintTarget, CreateBlueprintSchema, UpdateBlueprintSchema, type BlueprintFieldDefinition } from "@planarchy/shared";
import { TRPCError } from "@trpc/server";
import { z } from "zod";
import { findUniqueOrThrow } from "../db/helpers.js";
import { adminProcedure, createTRPCRouter, protectedProcedure } from "../trpc.js";

export const blueprintRouter = createTRPCRouter({
  list: protectedProcedure
    .input(
      z.object({
        target: z.nativeEnum(BlueprintTarget).optional(),
        isActive: z.boolean().optional().default(true),
      }),
    )
    .query(async ({ ctx, input }) => {
      return ctx.db.blueprint.findMany({
        where: {
          ...(input.target ? { target: input.target } : {}),
          isActive: input.isActive,
        },
        orderBy: { name: "asc" },
      });
    }),

  getById: protectedProcedure
    .input(z.object({ id: z.string() }))
    .query(async ({ ctx, input }) => {
      const blueprint = await findUniqueOrThrow(
        ctx.db.blueprint.findUnique({ where: { id: input.id } }),
        "Blueprint",
      );
      return blueprint;
    }),

  create: adminProcedure
    .input(CreateBlueprintSchema)
    .mutation(async ({ ctx, input }) => {
      return ctx.db.blueprint.create({
        data: {
          name: input.name,
          target: input.target,
          description: input.description,
          fieldDefs: input.fieldDefs as unknown as import("@planarchy/db").Prisma.InputJsonValue,
          defaults: input.defaults as unknown as import("@planarchy/db").Prisma.InputJsonValue,
          validationRules: input.validationRules as unknown as import("@planarchy/db").Prisma.InputJsonValue,
        } as unknown as Parameters<typeof ctx.db.blueprint.create>[0]["data"],
      });
    }),

  update: adminProcedure
    .input(z.object({ id: z.string(), data: UpdateBlueprintSchema }))
    .mutation(async ({ ctx, input }) => {
      await findUniqueOrThrow(
        ctx.db.blueprint.findUnique({ where: { id: input.id } }),
        "Blueprint",
      );

      return ctx.db.blueprint.update({
        where: { id: input.id },
        data: {
          ...(input.data.name !== undefined ? { name: input.data.name } : {}),
          ...(input.data.description !== undefined ? { description: input.data.description } : {}),
          ...(input.data.fieldDefs !== undefined ? { fieldDefs: input.data.fieldDefs as unknown as import("@planarchy/db").Prisma.InputJsonValue } : {}),
          ...(input.data.defaults !== undefined ? { defaults: input.data.defaults as unknown as import("@planarchy/db").Prisma.InputJsonValue } : {}),
          ...(input.data.validationRules !== undefined ? { validationRules: input.data.validationRules as unknown as import("@planarchy/db").Prisma.InputJsonValue } : {}),
        } as unknown as Parameters<typeof ctx.db.blueprint.update>[0]["data"],
      });
    }),

  /** Dedicated mutation for saving role presets — separate from field defs to avoid Zod depth issues */
  updateRolePresets: adminProcedure
    .input(z.object({ id: z.string(), rolePresets: z.array(z.unknown()) }))
    .mutation(async ({ ctx, input }) => {
      await findUniqueOrThrow(
        ctx.db.blueprint.findUnique({ where: { id: input.id } }),
        "Blueprint",
      );
      return ctx.db.blueprint.update({
        where: { id: input.id },
        data: { rolePresets: input.rolePresets as unknown as import("@planarchy/db").Prisma.InputJsonValue },
      });
    }),

  delete: adminProcedure
    .input(z.object({ id: z.string() }))
    .mutation(async ({ ctx, input }) => {
      // Soft delete — mark as inactive
      return ctx.db.blueprint.update({
        where: { id: input.id },
        data: { isActive: false },
      });
    }),

  batchDelete: adminProcedure
    .input(z.object({ ids: z.array(z.string()).min(1).max(100) }))
    .mutation(async ({ ctx, input }) => {
      // Soft delete
      const updated = await ctx.db.$transaction(
        input.ids.map((id) =>
          ctx.db.blueprint.update({ where: { id }, data: { isActive: false } }),
        ),
      );
      return { count: updated.length };
    }),

  getGlobalFieldDefs: protectedProcedure
    .input(z.object({ target: z.nativeEnum(BlueprintTarget) }))
    .query(async ({ ctx, input }) => {
      const blueprints = await ctx.db.blueprint.findMany({
        where: { target: input.target, isGlobal: true, isActive: true },
        select: { id: true, name: true, fieldDefs: true },
      });
      return blueprints.flatMap((b) =>
        (b.fieldDefs as unknown as BlueprintFieldDefinition[]).map((f) => ({
          ...f,
          blueprintId: b.id,
          blueprintName: b.name,
        })),
      );
    }),

  setGlobal: adminProcedure
    .input(z.object({ id: z.string(), isGlobal: z.boolean() }))
    .mutation(async ({ ctx, input }) => {
      return ctx.db.blueprint.update({
        where: { id: input.id },
        data: { isGlobal: input.isGlobal },
      });
    }),
});