98 lines
3 KiB
C#
98 lines
3 KiB
C#
using Microsoft.EntityFrameworkCore.Migrations;
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using NodaTime;
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#nullable disable
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namespace Foxnouns.Backend.Database.Migrations
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{
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/// <inheritdoc />
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public partial class AddSids : Migration
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{
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/// <inheritdoc />
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protected override void Up(MigrationBuilder migrationBuilder)
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{
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migrationBuilder.AddColumn<string>(
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name: "sid",
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table: "users",
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type: "text",
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nullable: true);
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migrationBuilder.AddColumn<Instant>(
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name: "last_sid_reroll",
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table: "users",
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type: "timestamp with time zone",
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nullable: false,
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defaultValueSql: "now() - '1 hour'::interval");
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migrationBuilder.AddColumn<string>(
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name: "sid",
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table: "members",
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type: "text",
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nullable: true);
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migrationBuilder.CreateIndex(
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name: "ix_users_sid",
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table: "users",
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column: "sid",
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unique: true);
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migrationBuilder.CreateIndex(
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name: "ix_members_sid",
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table: "members",
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column: "sid",
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unique: true);
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migrationBuilder.Sql(@"create function generate_sid(len int) returns text as $$
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select string_agg(substr('abcdefghijklmnopqrstuvwxyz', ceil(random() * 26)::integer, 1), '') from generate_series(1, len)
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$$ language sql volatile;
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");
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migrationBuilder.Sql(@"create function find_free_user_sid() returns text as $$
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declare new_sid text;
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begin
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loop
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new_sid := generate_sid(5);
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if not exists (select 1 from users where sid = new_sid) then return new_sid; end if;
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end loop;
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end
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$$ language plpgsql volatile;
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");
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migrationBuilder.Sql(@"create function find_free_member_sid() returns text as $$
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declare new_sid text;
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begin
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loop
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new_sid := generate_sid(6);
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if not exists (select 1 from members where sid = new_sid) then return new_sid; end if;
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end loop;
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end
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$$ language plpgsql volatile;");
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}
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/// <inheritdoc />
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protected override void Down(MigrationBuilder migrationBuilder)
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{
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migrationBuilder.Sql("drop function find_free_member_sid;");
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migrationBuilder.Sql("drop function find_free_user_sid;");
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migrationBuilder.Sql("drop function generate_sid;");
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migrationBuilder.DropIndex(
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name: "ix_users_sid",
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table: "users");
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migrationBuilder.DropIndex(
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name: "ix_members_sid",
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table: "members");
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migrationBuilder.DropColumn(
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name: "sid",
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table: "users");
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migrationBuilder.DropColumn(
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name: "last_sid_reroll",
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table: "users");
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migrationBuilder.DropColumn(
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name: "sid",
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table: "members");
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}
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}
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}
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