using System;
using Microsoft.EntityFrameworkCore.Migrations;
using NodaTime;
using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;

#nullable disable

namespace Foxchat.Chat.Migrations
{
    /// <inheritdoc />
    public partial class Init : Migration
    {
        /// <inheritdoc />
        protected override void Up(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.CreateTable(
                name: "identity_instances",
                columns: table => new
                {
                    id = table.Column<Guid>(type: "uuid", nullable: false),
                    domain = table.Column<string>(type: "text", nullable: false),
                    base_url = table.Column<string>(type: "text", nullable: false),
                    public_key = table.Column<string>(type: "text", nullable: false),
                    status = table.Column<int>(type: "integer", nullable: false),
                    reason = table.Column<string>(type: "text", nullable: true)
                },
                constraints: table =>
                {
                    table.PrimaryKey("pk_identity_instances", x => x.id);
                });

            migrationBuilder.CreateTable(
                name: "instance",
                columns: table => new
                {
                    id = table.Column<int>(type: "integer", nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    public_key = table.Column<string>(type: "text", nullable: false),
                    private_key = table.Column<string>(type: "text", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("pk_instance", x => x.id);
                });

            migrationBuilder.CreateTable(
                name: "users",
                columns: table => new
                {
                    id = table.Column<Guid>(type: "uuid", nullable: false),
                    instance_id = table.Column<Guid>(type: "uuid", nullable: false),
                    remote_user_id = table.Column<string>(type: "text", nullable: false),
                    username = table.Column<string>(type: "text", nullable: false),
                    avatar = table.Column<string>(type: "text", nullable: true)
                },
                constraints: table =>
                {
                    table.PrimaryKey("pk_users", x => x.id);
                    table.ForeignKey(
                        name: "fk_users_identity_instances_instance_id",
                        column: x => x.instance_id,
                        principalTable: "identity_instances",
                        principalColumn: "id",
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateTable(
                name: "guilds",
                columns: table => new
                {
                    id = table.Column<Guid>(type: "uuid", nullable: false),
                    name = table.Column<string>(type: "text", nullable: false),
                    owner_id = table.Column<Guid>(type: "uuid", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("pk_guilds", x => x.id);
                    table.ForeignKey(
                        name: "fk_guilds_users_owner_id",
                        column: x => x.owner_id,
                        principalTable: "users",
                        principalColumn: "id",
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateTable(
                name: "channels",
                columns: table => new
                {
                    id = table.Column<Guid>(type: "uuid", nullable: false),
                    guild_id = table.Column<Guid>(type: "uuid", nullable: false),
                    name = table.Column<string>(type: "text", nullable: false),
                    topic = table.Column<string>(type: "text", nullable: true)
                },
                constraints: table =>
                {
                    table.PrimaryKey("pk_channels", x => x.id);
                    table.ForeignKey(
                        name: "fk_channels_guilds_guild_id",
                        column: x => x.guild_id,
                        principalTable: "guilds",
                        principalColumn: "id",
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateTable(
                name: "guild_user",
                columns: table => new
                {
                    guilds_id = table.Column<Guid>(type: "uuid", nullable: false),
                    users_id = table.Column<Guid>(type: "uuid", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("pk_guild_user", x => new { x.guilds_id, x.users_id });
                    table.ForeignKey(
                        name: "fk_guild_user_guilds_guilds_id",
                        column: x => x.guilds_id,
                        principalTable: "guilds",
                        principalColumn: "id",
                        onDelete: ReferentialAction.Cascade);
                    table.ForeignKey(
                        name: "fk_guild_user_users_users_id",
                        column: x => x.users_id,
                        principalTable: "users",
                        principalColumn: "id",
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateTable(
                name: "messages",
                columns: table => new
                {
                    id = table.Column<Guid>(type: "uuid", nullable: false),
                    channel_id = table.Column<Guid>(type: "uuid", nullable: false),
                    author_id = table.Column<Guid>(type: "uuid", nullable: false),
                    content = table.Column<string>(type: "text", nullable: true),
                    updated_at = table.Column<Instant>(type: "timestamp with time zone", nullable: true)
                },
                constraints: table =>
                {
                    table.PrimaryKey("pk_messages", x => x.id);
                    table.ForeignKey(
                        name: "fk_messages_channels_channel_id",
                        column: x => x.channel_id,
                        principalTable: "channels",
                        principalColumn: "id",
                        onDelete: ReferentialAction.Cascade);
                    table.ForeignKey(
                        name: "fk_messages_users_author_id",
                        column: x => x.author_id,
                        principalTable: "users",
                        principalColumn: "id",
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateIndex(
                name: "ix_channels_guild_id",
                table: "channels",
                column: "guild_id");

            migrationBuilder.CreateIndex(
                name: "ix_guild_user_users_id",
                table: "guild_user",
                column: "users_id");

            migrationBuilder.CreateIndex(
                name: "ix_guilds_owner_id",
                table: "guilds",
                column: "owner_id");

            migrationBuilder.CreateIndex(
                name: "ix_identity_instances_domain",
                table: "identity_instances",
                column: "domain",
                unique: true);

            migrationBuilder.CreateIndex(
                name: "ix_messages_author_id",
                table: "messages",
                column: "author_id");

            migrationBuilder.CreateIndex(
                name: "ix_messages_channel_id",
                table: "messages",
                column: "channel_id");

            migrationBuilder.CreateIndex(
                name: "ix_users_instance_id",
                table: "users",
                column: "instance_id");

            migrationBuilder.CreateIndex(
                name: "ix_users_remote_user_id_instance_id",
                table: "users",
                columns: new[] { "remote_user_id", "instance_id" },
                unique: true);

            // EF Core doesn't support creating indexes on arbitrary expressions, so we have to create it manually.
            migrationBuilder.Sql("CREATE UNIQUE INDEX ix_users_username_instance_id ON users (lower(username), instance_id)");
        }

        /// <inheritdoc />
        protected override void Down(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.DropTable(
                name: "guild_user");

            migrationBuilder.DropTable(
                name: "instance");

            migrationBuilder.DropTable(
                name: "messages");

            migrationBuilder.DropTable(
                name: "channels");

            migrationBuilder.DropTable(
                name: "guilds");

            migrationBuilder.DropTable(
                name: "users");

            migrationBuilder.DropTable(
                name: "identity_instances");
        }
    }
}