import { experimental_trpcMiddleware, TRPCError } from "@trpc/server";
import { and, eq, gt, inArray, lt, or } from "drizzle-orm";
import invariant from "tiny-invariant";
import { z } from "zod";

import type { ZBookmarkContent } from "@karakeep/shared/types/bookmarks";
import type { ZBookmarkTags } from "@karakeep/shared/types/tags";
import {
  assets,
  AssetTypes,
  bookmarkAssets,
  bookmarkLinks,
  bookmarks,
  bookmarkTags,
  bookmarkTexts,
  customPrompts,
  tagsOnBookmarks,
} from "@karakeep/db/schema";
import {
  AssetPreprocessingQueue,
  LinkCrawlerQueue,
  OpenAIQueue,
  QuotaService,
  triggerRuleEngineOnEvent,
  triggerSearchReindex,
  triggerWebhook,
} from "@karakeep/shared-server";
import { SUPPORTED_BOOKMARK_ASSET_TYPES } from "@karakeep/shared/assetdb";
import serverConfig from "@karakeep/shared/config";
import { InferenceClientFactory } from "@karakeep/shared/inference";
import { buildSummaryPrompt } from "@karakeep/shared/prompts";
import { EnqueueOptions } from "@karakeep/shared/queueing";
import { FilterQuery, getSearchClient } from "@karakeep/shared/search";
import { parseSearchQuery } from "@karakeep/shared/searchQueryParser";
import {
  BookmarkTypes,
  DEFAULT_NUM_BOOKMARKS_PER_PAGE,
  zBookmarkSchema,
  zGetBookmarksRequestSchema,
  zGetBookmarksResponseSchema,
  zManipulatedTagSchema,
  zNewBookmarkRequestSchema,
  zSearchBookmarksCursor,
  zSearchBookmarksRequestSchema,
  zUpdateBookmarksRequestSchema,
} from "@karakeep/shared/types/bookmarks";
import { normalizeTagName } from "@karakeep/shared/utils/tag";

import type { AuthedContext } from "../index";
import { authedProcedure, createRateLimitMiddleware, router } from "../index";
import { getBookmarkIdsFromMatcher } from "../lib/search";
import { BareBookmark, Bookmark } from "../models/bookmarks";
import { ImportSession } from "../models/importSessions";
import { ensureAssetOwnership } from "./assets";

export const ensureBookmarkOwnership = experimental_trpcMiddleware<{
  ctx: AuthedContext;
  input: { bookmarkId: string };
}>().create(async (opts) => {
  const bookmark = await BareBookmark.bareFromId(
    opts.ctx,
    opts.input.bookmarkId,
  );
  bookmark.ensureOwnership();

  return opts.next({
    ctx: {
      ...opts.ctx,
      bookmark,
    },
  });
});

export const ensureBookmarkAccess = experimental_trpcMiddleware<{
  ctx: AuthedContext;
  input: { bookmarkId: string };
}>().create(async (opts) => {
  // Throws if bookmark doesn't exist or user doesn't have access
  const bookmark = await BareBookmark.bareFromId(
    opts.ctx,
    opts.input.bookmarkId,
  );

  return opts.next({
    ctx: {
      ...opts.ctx,
      bookmark,
    },
  });
});

async function attemptToDedupLink(ctx: AuthedContext, url: string) {
  const result = await ctx.db
    .select({
      id: bookmarkLinks.id,
    })
    .from(bookmarkLinks)
    .leftJoin(bookmarks, eq(bookmarks.id, bookmarkLinks.id))
    .where(and(eq(bookmarkLinks.url, url), eq(bookmarks.userId, ctx.user.id)));

  if (result.length == 0) {
    return null;
  }
  return (
    await Bookmark.fromId(ctx, result[0].id, /* includeContent: */ false)
  ).asZBookmark();
}

export const bookmarksAppRouter = router({
  createBookmark: authedProcedure
    .input(zNewBookmarkRequestSchema)
    .output(
      zBookmarkSchema.merge(
        z.object({
          alreadyExists: z.boolean().optional().default(false),
        }),
      ),
    )
    .mutation(async ({ input, ctx }) => {
      if (input.type == BookmarkTypes.LINK) {
        // This doesn't 100% protect from duplicates because of races, but it's more than enough for this usecase.
        const alreadyExists = await attemptToDedupLink(ctx, input.url);
        if (alreadyExists) {
          if (input.importSessionId) {
            const session = await ImportSession.fromId(
              ctx,
              input.importSessionId,
            );
            await session.attachBookmark(alreadyExists.id);
          }
          return { ...alreadyExists, alreadyExists: true };
        }
      }

      // Check user quota
      const quotaResult = await QuotaService.canCreateBookmark(
        ctx.db,
        ctx.user.id,
      );
      if (!quotaResult.result) {
        throw new TRPCError({
          code: "FORBIDDEN",
          message: quotaResult.error,
        });
      }

      const bookmark = await ctx.db.transaction(async (tx) => {
        const bookmark = (
          await tx
            .insert(bookmarks)
            .values({
              userId: ctx.user.id,
              title: input.title,
              type: input.type,
              archived: input.archived,
              favourited: input.favourited,
              note: input.note,
              summary: input.summary,
              createdAt: input.createdAt,
              source: input.source,
            })
            .returning()
        )[0];

        let content: ZBookmarkContent;

        switch (input.type) {
          case BookmarkTypes.LINK: {
            const link = (
              await tx
                .insert(bookmarkLinks)
                .values({
                  id: bookmark.id,
                  url: input.url.trim(),
                })
                .returning()
            )[0];
            if (input.precrawledArchiveId) {
              await ensureAssetOwnership({
                ctx,
                assetId: input.precrawledArchiveId,
              });
              await tx
                .update(assets)
                .set({
                  bookmarkId: bookmark.id,
                  assetType: AssetTypes.LINK_PRECRAWLED_ARCHIVE,
                })
                .where(
                  and(
                    eq(assets.id, input.precrawledArchiveId),
                    eq(assets.userId, ctx.user.id),
                  ),
                );
            }
            content = {
              type: BookmarkTypes.LINK,
              ...link,
            };
            break;
          }
          case BookmarkTypes.TEXT: {
            const text = (
              await tx
                .insert(bookmarkTexts)
                .values({
                  id: bookmark.id,
                  text: input.text,
                  sourceUrl: input.sourceUrl,
                })
                .returning()
            )[0];
            content = {
              type: BookmarkTypes.TEXT,
              text: text.text ?? "",
              sourceUrl: text.sourceUrl,
            };
            break;
          }
          case BookmarkTypes.ASSET: {
            const [asset] = await tx
              .insert(bookmarkAssets)
              .values({
                id: bookmark.id,
                assetType: input.assetType,
                assetId: input.assetId,
                content: null,
                metadata: null,
                fileName: input.fileName ?? null,
                sourceUrl: null,
              })
              .returning();
            const uploadedAsset = await ensureAssetOwnership({
              ctx,
              assetId: input.assetId,
            });
            if (
              !uploadedAsset.contentType ||
              !SUPPORTED_BOOKMARK_ASSET_TYPES.has(uploadedAsset.contentType)
            ) {
              throw new TRPCError({
                code: "BAD_REQUEST",
                message: "Unsupported asset type",
              });
            }
            await tx
              .update(assets)
              .set({
                bookmarkId: bookmark.id,
                assetType: AssetTypes.BOOKMARK_ASSET,
              })
              .where(
                and(
                  eq(assets.id, input.assetId),
                  eq(assets.userId, ctx.user.id),
                ),
              );
            content = {
              type: BookmarkTypes.ASSET,
              assetType: asset.assetType,
              assetId: asset.assetId,
            };
            break;
          }
        }

        return {
          alreadyExists: false,
          tags: [] as ZBookmarkTags[],
          assets: [],
          content,
          ...bookmark,
        };
      });

      if (input.importSessionId) {
        const session = await ImportSession.fromId(ctx, input.importSessionId);
        await session.attachBookmark(bookmark.id);
      }

      const enqueueOpts: EnqueueOptions = {
        // The lower the priority number, the sooner the job will be processed
        priority: input.crawlPriority === "low" ? 50 : 0,
        groupId: ctx.user.id,
      };

      switch (bookmark.content.type) {
        case BookmarkTypes.LINK: {
          // The crawling job triggers openai when it's done
          await LinkCrawlerQueue.enqueue(
            {
              bookmarkId: bookmark.id,
            },
            enqueueOpts,
          );
          break;
        }
        case BookmarkTypes.TEXT: {
          await OpenAIQueue.enqueue(
            {
              bookmarkId: bookmark.id,
              type: "tag",
            },
            enqueueOpts,
          );
          break;
        }
        case BookmarkTypes.ASSET: {
          await AssetPreprocessingQueue.enqueue(
            {
              bookmarkId: bookmark.id,
              fixMode: false,
            },
            enqueueOpts,
          );
          break;
        }
      }

      await triggerRuleEngineOnEvent(
        bookmark.id,
        [
          {
            type: "bookmarkAdded",
          },
        ],
        enqueueOpts,
      );
      await triggerSearchReindex(bookmark.id, enqueueOpts);
      await triggerWebhook(
        bookmark.id,
        "created",
        /* userId */ undefined,
        enqueueOpts,
      );
      return bookmark;
    }),

  updateBookmark: authedProcedure
    .input(zUpdateBookmarksRequestSchema)
    .output(zBookmarkSchema)
    .use(ensureBookmarkOwnership)
    .mutation(async ({ input, ctx }) => {
      await ctx.db.transaction(async (tx) => {
        let somethingChanged = false;

        // Update link-specific fields if any are provided
        const linkUpdateData: Partial<{
          url: string;
          description: string | null;
          author: string | null;
          publisher: string | null;
          datePublished: Date | null;
          dateModified: Date | null;
        }> = {};
        if (input.url) {
          linkUpdateData.url = input.url.trim();
        }
        if (input.description !== undefined) {
          linkUpdateData.description = input.description;
        }
        if (input.author !== undefined) {
          linkUpdateData.author = input.author;
        }
        if (input.publisher !== undefined) {
          linkUpdateData.publisher = input.publisher;
        }
        if (input.datePublished !== undefined) {
          linkUpdateData.datePublished = input.datePublished;
        }
        if (input.dateModified !== undefined) {
          linkUpdateData.dateModified = input.dateModified;
        }

        if (Object.keys(linkUpdateData).length > 0) {
          const result = await tx
            .update(bookmarkLinks)
            .set(linkUpdateData)
            .where(eq(bookmarkLinks.id, input.bookmarkId));
          if (result.changes == 0) {
            throw new TRPCError({
              code: "BAD_REQUEST",
              message:
                "Attempting to set link attributes for non-link type bookmark",
            });
          }
          somethingChanged = true;
        }

        if (input.text) {
          const result = await tx
            .update(bookmarkTexts)
            .set({
              text: input.text,
            })
            .where(eq(bookmarkTexts.id, input.bookmarkId));

          if (result.changes == 0) {
            throw new TRPCError({
              code: "BAD_REQUEST",
              message:
                "Attempting to set link attributes for non-text type bookmark",
            });
          }
          somethingChanged = true;
        }

        if (input.assetContent !== undefined) {
          const result = await tx
            .update(bookmarkAssets)
            .set({
              content: input.assetContent,
            })
            .where(and(eq(bookmarkAssets.id, input.bookmarkId)));

          if (result.changes == 0) {
            throw new TRPCError({
              code: "BAD_REQUEST",
              message:
                "Attempting to set asset content for non-asset type bookmark",
            });
          }
          somethingChanged = true;
        }

        // Update common bookmark fields
        const commonUpdateData: Partial<{
          title: string | null;
          archived: boolean;
          favourited: boolean;
          note: string | null;
          summary: string | null;
          createdAt: Date;
          modifiedAt: Date; // Always update modifiedAt
        }> = {
          modifiedAt: new Date(),
        };
        if (input.title !== undefined) {
          commonUpdateData.title = input.title;
        }
        if (input.archived !== undefined) {
          commonUpdateData.archived = input.archived;
        }
        if (input.favourited !== undefined) {
          commonUpdateData.favourited = input.favourited;
        }
        if (input.note !== undefined) {
          commonUpdateData.note = input.note;
        }
        if (input.summary !== undefined) {
          commonUpdateData.summary = input.summary;
        }
        if (input.createdAt !== undefined) {
          commonUpdateData.createdAt = input.createdAt;
        }

        if (Object.keys(commonUpdateData).length > 1 || somethingChanged) {
          await tx
            .update(bookmarks)
            .set(commonUpdateData)
            .where(
              and(
                eq(bookmarks.userId, ctx.user.id),
                eq(bookmarks.id, input.bookmarkId),
              ),
            );
        }
      });

      // Refetch the updated bookmark data to return the full object
      const updatedBookmark = (
        await Bookmark.fromId(
          ctx,
          input.bookmarkId,
          /* includeContent: */ false,
        )
      ).asZBookmark();

      if (input.favourited === true || input.archived === true) {
        await triggerRuleEngineOnEvent(
          input.bookmarkId,
          [
            ...(input.favourited === true ? ["favourited" as const] : []),
            ...(input.archived === true ? ["archived" as const] : []),
          ].map((t) => ({
            type: t,
          })),
        );
      }
      // Trigger re-indexing and webhooks
      await triggerSearchReindex(input.bookmarkId, {
        groupId: ctx.user.id,
      });
      await triggerWebhook(input.bookmarkId, "edited", ctx.user.id, {
        groupId: ctx.user.id,
      });

      return updatedBookmark;
    }),

  // DEPRECATED: use updateBookmark instead
  updateBookmarkText: authedProcedure
    .input(
      z.object({
        bookmarkId: z.string(),
        text: z.string(),
      }),
    )
    .use(ensureBookmarkOwnership)
    .mutation(async ({ input, ctx }) => {
      await ctx.db.transaction(async (tx) => {
        const res = await tx
          .update(bookmarkTexts)
          .set({
            text: input.text,
          })
          .where(and(eq(bookmarkTexts.id, input.bookmarkId)))
          .returning();
        if (res.length == 0) {
          throw new TRPCError({
            code: "NOT_FOUND",
            message: "Bookmark not found",
          });
        }
        await tx
          .update(bookmarks)
          .set({ modifiedAt: new Date() })
          .where(
            and(
              eq(bookmarks.id, input.bookmarkId),
              eq(bookmarks.userId, ctx.user.id),
            ),
          );
      });
      await triggerSearchReindex(input.bookmarkId, {
        groupId: ctx.user.id,
      });
      await triggerWebhook(input.bookmarkId, "edited", ctx.user.id, {
        groupId: ctx.user.id,
      });
    }),

  deleteBookmark: authedProcedure
    .input(z.object({ bookmarkId: z.string() }))
    .use(ensureBookmarkOwnership)
    .mutation(async ({ input, ctx }) => {
      const bookmark = await Bookmark.fromId(ctx, input.bookmarkId, false);
      await bookmark.delete();
    }),
  recrawlBookmark: authedProcedure
    .use(
      createRateLimitMiddleware({
        name: "bookmarks.recrawlBookmark",
        windowMs: 30 * 60 * 1000,
        maxRequests: 200,
      }),
    )
    .input(
      z.object({
        bookmarkId: z.string(),
        archiveFullPage: z.boolean().optional().default(false),
      }),
    )
    .use(ensureBookmarkOwnership)
    .mutation(async ({ input, ctx }) => {
      await ctx.db
        .update(bookmarkLinks)
        .set({
          crawlStatus: "pending",
          crawlStatusCode: null,
        })
        .where(eq(bookmarkLinks.id, input.bookmarkId));
      await LinkCrawlerQueue.enqueue(
        {
          bookmarkId: input.bookmarkId,
          archiveFullPage: input.archiveFullPage,
        },
        {
          groupId: ctx.user.id,
        },
      );
    }),
  getBookmark: authedProcedure
    .input(
      z.object({
        bookmarkId: z.string(),
        includeContent: z.boolean().optional().default(false),
      }),
    )
    .output(zBookmarkSchema)
    .use(ensureBookmarkAccess)
    .query(async ({ input, ctx }) => {
      return (
        await Bookmark.fromId(ctx, input.bookmarkId, input.includeContent)
      ).asZBookmark();
    }),
  searchBookmarks: authedProcedure
    .input(zSearchBookmarksRequestSchema)
    .output(
      z.object({
        bookmarks: z.array(zBookmarkSchema),
        nextCursor: zSearchBookmarksCursor.nullable(),
      }),
    )
    .query(async ({ input, ctx }) => {
      if (!input.limit) {
        input.limit = DEFAULT_NUM_BOOKMARKS_PER_PAGE;
      }
      const sortOrder = input.sortOrder || "relevance";
      const client = await getSearchClient();
      if (!client) {
        throw new TRPCError({
          code: "INTERNAL_SERVER_ERROR",
          message: "Search functionality is not configured",
        });
      }
      const parsedQuery = parseSearchQuery(input.text);

      let filter: FilterQuery[];
      if (parsedQuery.matcher) {
        const bookmarkIds = await getBookmarkIdsFromMatcher(
          ctx,
          parsedQuery.matcher,
        );
        filter = [
          { type: "in", field: "id", values: bookmarkIds },
          { type: "eq", field: "userId", value: ctx.user.id },
        ];
      } else {
        filter = [{ type: "eq", field: "userId", value: ctx.user.id }];
      }

      /**
       * preserve legacy behaviour
       */
      const createdAtSortOrder = sortOrder === "relevance" ? "desc" : sortOrder;

      const resp = await client.search({
        query: parsedQuery.text,
        filter,
        sort: [{ field: "createdAt", order: createdAtSortOrder }],
        limit: input.limit,
        ...(input.cursor
          ? {
              offset: input.cursor.offset,
            }
          : {}),
      });

      if (resp.hits.length == 0) {
        return { bookmarks: [], nextCursor: null };
      }
      const idToRank = resp.hits.reduce<Record<string, number>>((acc, r) => {
        acc[r.id] = r.score || 0;
        return acc;
      }, {});

      const { bookmarks: results } = await Bookmark.loadMulti(ctx, {
        ids: resp.hits.map((h) => h.id),
        includeContent: input.includeContent,
        sortOrder: "desc", // Doesn't matter, we're sorting again afterwards and the list contain all data
      });

      switch (true) {
        case sortOrder === "relevance":
          results.sort((a, b) => idToRank[b.id] - idToRank[a.id]);
          break;
        case sortOrder === "desc":
          results.sort((a, b) => b.createdAt.getTime() - a.createdAt.getTime());
          break;
        case sortOrder === "asc":
          results.sort((a, b) => a.createdAt.getTime() - b.createdAt.getTime());
          break;
      }

      return {
        bookmarks: results.map((b) => b.asZBookmark()),
        nextCursor:
          resp.hits.length + (input.cursor?.offset || 0) >= resp.totalHits
            ? null
            : {
                ver: 1 as const,
                offset: resp.hits.length + (input.cursor?.offset || 0),
              },
      };
    }),
  getBookmarks: authedProcedure
    .input(zGetBookmarksRequestSchema)
    .output(zGetBookmarksResponseSchema)
    .query(async ({ input, ctx }) => {
      const res = await Bookmark.loadMulti(ctx, input);
      return {
        bookmarks: res.bookmarks.map((b) => b.asZBookmark()),
        nextCursor: res.nextCursor,
      };
    }),

  updateTags: authedProcedure
    .input(
      z.object({
        bookmarkId: z.string(),
        attach: z.array(zManipulatedTagSchema),
        detach: z.array(zManipulatedTagSchema),
      }),
    )
    .output(
      z.object({
        attached: z.array(z.string()),
        detached: z.array(z.string()),
      }),
    )
    .use(ensureBookmarkOwnership)
    .mutation(async ({ input, ctx }) => {
      return ctx.db.transaction(async (tx) => {
        // Detaches
        const idsToRemove: string[] = [];
        if (input.detach.length > 0) {
          const namesToRemove: string[] = [];
          input.detach.forEach((detachInfo) => {
            if (detachInfo.tagId) {
              idsToRemove.push(detachInfo.tagId);
            }
            if (detachInfo.tagName) {
              namesToRemove.push(detachInfo.tagName);
            }
          });

          if (namesToRemove.length > 0) {
            (
              await tx.query.bookmarkTags.findMany({
                where: and(
                  eq(bookmarkTags.userId, ctx.user.id),
                  inArray(bookmarkTags.name, namesToRemove),
                ),
                columns: {
                  id: true,
                },
              })
            ).forEach((tag) => {
              idsToRemove.push(tag.id);
            });
          }

          await tx
            .delete(tagsOnBookmarks)
            .where(
              and(
                eq(tagsOnBookmarks.bookmarkId, input.bookmarkId),
                inArray(tagsOnBookmarks.tagId, idsToRemove),
              ),
            );
        }

        if (input.attach.length == 0) {
          return {
            bookmarkId: input.bookmarkId,
            attached: [],
            detached: idsToRemove,
          };
        }

        const toAddTagNames = input.attach
          .flatMap((i) => (i.tagName ? [i.tagName] : []))
          .map(normalizeTagName) // strip leading #
          .filter((n) => n.length > 0); // drop empty results

        const toAddTagIds = input.attach.flatMap((i) =>
          i.tagId ? [i.tagId] : [],
        );

        // New Tags
        if (toAddTagNames.length > 0) {
          await tx
            .insert(bookmarkTags)
            .values(
              toAddTagNames.map((name) => ({ name, userId: ctx.user.id })),
            )
            .onConflictDoNothing()
            .returning();
        }

        // If there is nothing to add, the "or" statement will become useless and
        // the query below will simply select all the existing tags for this user and assign them to the bookmark
        invariant(toAddTagNames.length > 0 || toAddTagIds.length > 0);
        const allIds = (
          await tx.query.bookmarkTags.findMany({
            where: and(
              eq(bookmarkTags.userId, ctx.user.id),
              or(
                toAddTagIds.length > 0
                  ? inArray(bookmarkTags.id, toAddTagIds)
                  : undefined,
                toAddTagNames.length > 0
                  ? inArray(bookmarkTags.name, toAddTagNames)
                  : undefined,
              ),
            ),
            columns: {
              id: true,
            },
          })
        ).map((t) => t.id);

        await tx
          .insert(tagsOnBookmarks)
          .values(
            allIds.map((i) => ({
              tagId: i,
              bookmarkId: input.bookmarkId,
              attachedBy: "human" as const,
              userId: ctx.user.id,
            })),
          )
          .onConflictDoNothing();
        await tx
          .update(bookmarks)
          .set({ modifiedAt: new Date() })
          .where(
            and(
              eq(bookmarks.id, input.bookmarkId),
              eq(bookmarks.userId, ctx.user.id),
            ),
          );

        await triggerRuleEngineOnEvent(input.bookmarkId, [
          ...idsToRemove.map((t) => ({
            type: "tagRemoved" as const,
            tagId: t,
          })),
          ...allIds.map((t) => ({
            type: "tagAdded" as const,
            tagId: t,
          })),
        ]);
        await triggerSearchReindex(input.bookmarkId, {
          groupId: ctx.user.id,
        });
        await triggerWebhook(input.bookmarkId, "edited", ctx.user.id, {
          groupId: ctx.user.id,
        });
        return {
          bookmarkId: input.bookmarkId,
          attached: allIds,
          detached: idsToRemove,
        };
      });
    }),
  getBrokenLinks: authedProcedure
    .output(
      z.object({
        bookmarks: z.array(
          z.object({
            id: z.string(),
            url: z.string(),
            statusCode: z.number().nullable(),
            isCrawlingFailure: z.boolean(),
            crawledAt: z.date().nullable(),
            createdAt: z.date().nullable(),
          }),
        ),
      }),
    )
    .query(async ({ ctx }) => {
      const brokenLinkBookmarks = await ctx.db
        .select({
          id: bookmarkLinks.id,
          url: bookmarkLinks.url,
          crawlStatusCode: bookmarkLinks.crawlStatusCode,
          crawlingStatus: bookmarkLinks.crawlStatus,
          crawledAt: bookmarkLinks.crawledAt,
          createdAt: bookmarks.createdAt,
        })
        .from(bookmarkLinks)
        .leftJoin(bookmarks, eq(bookmarks.id, bookmarkLinks.id))
        .where(
          and(
            eq(bookmarks.userId, ctx.user.id),
            or(
              eq(bookmarkLinks.crawlStatus, "failure"),
              lt(bookmarkLinks.crawlStatusCode, 200),
              gt(bookmarkLinks.crawlStatusCode, 299),
            ),
          ),
        );
      return {
        bookmarks: brokenLinkBookmarks.map((b) => ({
          id: b.id,
          url: b.url,
          statusCode: b.crawlStatusCode,
          isCrawlingFailure: b.crawlingStatus === "failure",
          crawledAt: b.crawledAt,
          createdAt: b.createdAt,
        })),
      };
    }),
  summarizeBookmark: authedProcedure
    .use(
      createRateLimitMiddleware({
        name: "bookmarks.summarizeBookmark",
        windowMs: 30 * 60 * 1000,
        maxRequests: 100,
      }),
    )
    .input(
      z.object({
        bookmarkId: z.string(),
      }),
    )
    .output(
      z.object({
        summary: z.string(),
      }),
    )
    .use(ensureBookmarkOwnership)
    .mutation(async ({ input, ctx }) => {
      const inferenceClient = InferenceClientFactory.build();
      if (!inferenceClient) {
        throw new TRPCError({
          code: "BAD_REQUEST",
          message: "No inference client configured",
        });
      }
      const bookmark = await ctx.db.query.bookmarkLinks.findFirst({
        where: eq(bookmarkLinks.id, input.bookmarkId),
      });

      if (!bookmark) {
        throw new TRPCError({
          code: "NOT_FOUND",
          message: "Bookmark not found or not a link",
        });
      }

      const content = await Bookmark.getBookmarkPlainTextContent(
        bookmark,
        ctx.user.id,
      );

      const bookmarkDetails = `
Title: ${bookmark.title ?? ""}
Description: ${bookmark.description ?? ""}
Content: ${content}
Publisher: ${bookmark.publisher ?? ""}
Author: ${bookmark.author ?? ""}
`;

      const prompts = await ctx.db.query.customPrompts.findMany({
        where: and(
          eq(customPrompts.userId, ctx.user.id),
          eq(customPrompts.appliesTo, "summary"),
        ),
        columns: {
          text: true,
        },
      });

      const summaryPrompt = buildSummaryPrompt(
        serverConfig.inference.inferredTagLang,
        prompts.map((p) => p.text),
        bookmarkDetails,
        serverConfig.inference.contextLength,
      );

      const summary = await inferenceClient.inferFromText(summaryPrompt, {
        schema: null,
      });

      if (!summary.response) {
        throw new TRPCError({
          code: "INTERNAL_SERVER_ERROR",
          message: "Failed to summarize bookmark",
        });
      }
      await ctx.db
        .update(bookmarks)
        .set({
          summary: summary.response,
        })
        .where(eq(bookmarks.id, input.bookmarkId));
      await triggerSearchReindex(input.bookmarkId, {
        groupId: ctx.user.id,
      });
      await triggerWebhook(input.bookmarkId, "edited", ctx.user.id, {
        groupId: ctx.user.id,
      });

      return {
        bookmarkId: input.bookmarkId,
        summary: summary.response,
      };
    }),
});