import define from "../../define.js";
import { createPerson } from "../../../../remote/activitypub/models/person.js";
import { createNote } from "../../../../remote/activitypub/models/note.js";
import DbResolver from "../../../../remote/activitypub/db-resolver.js";
import Resolver from "../../../../remote/activitypub/resolver.js";
import { ApiError } from "../../error.js";
import { extractDbHost } from "../../../../misc/convert-host.js";
import { Users, Notes } from "../../../../models/index.js";
import { isActor, isPost, getApId } from "../../../../remote/activitypub/type.js";
import { MINUTE } from "../../../../const.js";
import { shouldBlockInstance } from "../../../../misc/should-block-instance.js";
import { updateQuestion } from "../../../../remote/activitypub/models/question.js";
import { populatePoll } from "../../../../models/repositories/note.js";
import { redisClient } from "../../../../db/redis.js";
export const meta = {
    tags: [
        "federation"
    ],
    requireCredential: true,
    limit: {
        duration: MINUTE,
        max: 10
    },
    errors: {
        noSuchObject: {
            message: "No such object.",
            code: "NO_SUCH_OBJECT",
            id: "dc94d745-1262-4e63-a17d-fecaa57efc82"
        }
    },
    res: {
        optional: false,
        nullable: false,
        oneOf: [
            {
                type: "object",
                properties: {
                    type: {
                        type: "string",
                        optional: false,
                        nullable: false,
                        enum: [
                            "User"
                        ]
                    },
                    object: {
                        type: "object",
                        optional: false,
                        nullable: false,
                        ref: "UserDetailedNotMe"
                    }
                }
            },
            {
                type: "object",
                properties: {
                    type: {
                        type: "string",
                        optional: false,
                        nullable: false,
                        enum: [
                            "Note"
                        ]
                    },
                    object: {
                        type: "object",
                        optional: false,
                        nullable: false,
                        ref: "Note"
                    }
                }
            }
        ]
    }
};
export const paramDef = {
    type: "object",
    properties: {
        uri: {
            type: "string"
        }
    },
    required: [
        "uri"
    ]
};
export default define(meta, paramDef, async (ps, me)=>{
    const object = await fetchAny(ps.uri, me);
    if (object) {
        return object;
    } else {
        throw new ApiError(meta.errors.noSuchObject);
    }
});
/***
 * Resolve User or Note from URI
 */ async function fetchAny(uri, me) {
    // Wait if blocked.
    if (await shouldBlockInstance(extractDbHost(uri))) return null;
    const dbResolver = new DbResolver();
    const resolver = new Resolver();
    resolver.setUser(me);
    const [user, note] = await Promise.all([
        dbResolver.getUserFromApId(uri),
        dbResolver.getNoteFromApId(uri)
    ]);
    let local = await mergePack(me, user, note);
    if (local) {
        if (local.type === "Note" && note?.uri && note.hasPoll) {
            // Update questions if the stored (remote) note contains the poll
            const key = `pollFetched:${note.uri}`;
            if (await redisClient.exists(key) === 0) {
                if (await updateQuestion(note.uri, resolver)) {
                    local.object.poll = await populatePoll(note, me?.id ?? null);
                }
                // Allow fetching the poll again after 1 minute
                await redisClient.set(key, 1, "EX", 60);
            }
        }
        return local;
    }
    // fetching Object once from remote
    const object = await resolver.resolve(uri);
    // /@user If a URI other than the id is specified,
    // the URI is determined here
    if (uri !== object.id) {
        local = await mergePack(me, ...await Promise.all([
            dbResolver.getUserFromApId(getApId(object)),
            dbResolver.getNoteFromApId(getApId(object))
        ]));
        if (local != null) return local;
    }
    return await mergePack(me, isActor(object) ? await createPerson(getApId(object), resolver.reset()) : null, isPost(object) ? await createNote(getApId(object), resolver.reset(), true) : null);
}
async function mergePack(me, user, note) {
    if (user != null) {
        return {
            type: "User",
            object: await Users.pack(user, me, {
                detail: true
            })
        };
    } else if (note != null) {
        try {
            const object = await Notes.pack(note, me, {
                detail: true
            });
            return {
                type: "Note",
                object
            };
        } catch (e) {
            return null;
        }
    }
    return null;
}
