using System;
using Microsoft.EntityFrameworkCore.Migrations;

#nullable disable

namespace InboxIntel.Infrastructure.Migrations
{
    /// <inheritdoc />
    public partial class FeatureFlagsAndUserSettings : Migration
    {
        /// <inheritdoc />
        protected override void Up(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.CreateTable(
                name: "feature_flags",
                columns: table => new
                {
                    Key = table.Column<string>(type: "character varying(128)", maxLength: 128, nullable: false),
                    Enabled = table.Column<bool>(type: "boolean", nullable: false),
                    UserOverridable = table.Column<bool>(type: "boolean", nullable: false),
                    Description = table.Column<string>(type: "text", nullable: true),
                    CreatedAtUtc = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: false),
                    UpdatedAtUtc = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: true)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_feature_flags", x => x.Key);
                });

            migrationBuilder.CreateTable(
                name: "user_settings",
                columns: table => new
                {
                    UserId = table.Column<Guid>(type: "uuid", nullable: false),
                    Theme = table.Column<string>(type: "text", nullable: false),
                    AiOptIn = table.Column<bool>(type: "boolean", nullable: false),
                    PreferencesJson = table.Column<string>(type: "text", nullable: true),
                    CreatedAtUtc = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: false),
                    UpdatedAtUtc = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: true)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_user_settings", x => x.UserId);
                    table.ForeignKey(
                        name: "FK_user_settings_users_UserId",
                        column: x => x.UserId,
                        principalTable: "users",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });

            // Behaviour-preserving defaults (docs/discovery/multi-provider/04): ai.enabled on
            // (AI availability still requires Ai:Mode + provider), Google on, others off.
            migrationBuilder.Sql("""
                INSERT INTO feature_flags ("Key", "Enabled", "UserOverridable", "Description", "CreatedAtUtc", "UpdatedAtUtc")
                VALUES
                  ('ai.enabled', TRUE, TRUE,  'Master AI switch: off hides AI for everyone', NOW(), NOW()),
                  ('provider.google', TRUE, FALSE, 'Google/Gmail provider', NOW(), NOW()),
                  ('provider.microsoft', FALSE, FALSE, 'Microsoft/Outlook provider (future)', NOW(), NOW()),
                  ('provider.imap', FALSE, FALSE, 'IMAP provider (future)', NOW(), NOW())
                ON CONFLICT ("Key") DO NOTHING;
                """);
        }

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

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