/**
 * @param { import("knex").Knex } knex
 * @returns { Promise<void> }
 */
export const up = async function (knex) {
    return knex.schema
        .createTable("users", (table) => {
            table.increments("id");
            table.string("name").notNullable();
            table.string("nickname").notNullable();
            table.string("bio");
            table.string("public_key").notNullable();
            table.string("private_key").notNullable();
            table.boolean("deleted").notNullable();
            table.timestamps(true, false, false);
        })
        .createTable("articles", (table) => {
            table.increments("id");
            table.string("title").notNullable();
            table.string("slug").notNullable().unique();
            table.string("file").notNullable().unique();
            table.integer("users_id");
            table.foreign("users_id").references("users.id").onDelete("CASCADE");
            table.boolean("deleted").notNullable();
            table.timestamps(true, false, false);
        })
        .createTable("collection_types", (table) => {
            table.integer("id").unsigned().primary();
            table.string("name").notNullable();
        })
        .createTable("collections", (table) => {
            table.increments("id");
            table.integer("collection_types_id").notNullable();
            table.foreign("collection_types_id").references("collection_types.id");
            table.integer("articles_id");
            table.foreign("articles_id").references("articles.id").onDelete("CASCADE");
            table.integer("users_id");
            table.foreign("users_id").references("users.id").onDelete("CASCADE");
            table.string("value").notNullable();
            table.timestamps(true, false, false);

            table.index(["collection_types_id", "articles_id"]);
            table.index(["collection_types_id", "users_id"]);
        })
        .createTable("outboxes", (table) => {
            table.increments("id");
            table.integer("users_id");
            table.foreign("users_id").references("users.id").onDelete("CASCADE");
            table.string("verb").notNullable();
            table.integer("articles_id");
            table.foreign("articles_id").references("articles.id").onDelete("CASCADE");
            table.timestamps(true, false, false);
        })
        .createTable("remote_users", (table) => {
            table.increments("id");
            table.string("actor").notNullable().unique();
            table.string("nickname").notNullable();
            table.string("name");
            table.string("inbox");
            table.string("shared_inbox");
            table.timestamps(true, false, false);
        })
        .then(() => {
            // Hardcoding these so they can be referenced by constants in code.
            knex("collection_types").insert([
                {
                    id: 0,
                    name: "followers"
                },
                {
                    id: 1,
                    name: "likes"
                },
                {
                    id: 2,
                    name: "announcements"
                }
            ]);
        });
    ;
};

/**
 * @param { import("knex").Knex } knex
 * @returns { Promise<void> }
 */
export const down = function (knex) {
    return knex.schema
        .dropTableIfExists("remote_users")
        .dropTableIfExists("outboxes")
        .dropTableIfExists("collections")
        .dropTableIfExists("collection_types")
        .dropTableIfExists("articles")
        .dropTableIfExists("users")
        ;
};