using System;
using Microsoft.EntityFrameworkCore.Migrations;

#nullable disable

namespace HrynCo.NotificationService.DAL.EF.Migrations
{
    /// <inheritdoc />
    public partial class AddChannelTemplates : Migration
    {
        /// <inheritdoc />
        protected override void Up(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.CreateTable(
                name: "templates",
                columns: table => new
                {
                    id = table.Column<Guid>(type: "uuid", nullable: false),
                    service_id = table.Column<Guid>(type: "uuid", nullable: false),
                    key = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false),
                    created = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: false),
                    updated = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: true)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_templates", x => x.id);
                    table.UniqueConstraint("AK_templates_service_id_key", x => new { x.service_id, x.key });
                    table.ForeignKey(
                        name: "FK_templates_services_service_id",
                        column: x => x.service_id,
                        principalTable: "services",
                        principalColumn: "id",
                        onDelete: ReferentialAction.Restrict);
                });

            migrationBuilder.CreateTable(
                name: "push_template_definitions",
                columns: table => new
                {
                    id = table.Column<Guid>(type: "uuid", nullable: false),
                    service_id = table.Column<Guid>(type: "uuid", nullable: false),
                    key = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false),
                    revision = table.Column<Guid>(type: "uuid", nullable: false),
                    created = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: false),
                    updated = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: true),
                    variables = table.Column<string>(type: "jsonb", nullable: true)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_push_template_definitions", x => x.id);
                    table.UniqueConstraint("AK_push_template_definitions_id_service_id", x => new { x.id, x.service_id });
                    table.ForeignKey(
                        name: "FK_push_template_definitions_templates_service_id_key",
                        columns: x => new { x.service_id, x.key },
                        principalTable: "templates",
                        principalColumns: new[] { "service_id", "key" },
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateTable(
                name: "push_templates",
                columns: table => new
                {
                    id = table.Column<Guid>(type: "uuid", nullable: false),
                    definition_id = table.Column<Guid>(type: "uuid", nullable: false),
                    service_id = table.Column<Guid>(type: "uuid", nullable: false),
                    service_language_id = table.Column<Guid>(type: "uuid", nullable: false),
                    title = table.Column<string>(type: "text", nullable: false),
                    body = table.Column<string>(type: "text", nullable: false),
                    created = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: false),
                    updated = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: true)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_push_templates", x => x.id);
                    table.ForeignKey(
                        name: "FK_push_templates_push_template_definitions_definition_id_serv~",
                        columns: x => new { x.definition_id, x.service_id },
                        principalTable: "push_template_definitions",
                        principalColumns: new[] { "id", "service_id" },
                        onDelete: ReferentialAction.Cascade);
                    table.ForeignKey(
                        name: "FK_push_templates_service_languages_service_language_id_servic~",
                        columns: x => new { x.service_language_id, x.service_id },
                        principalTable: "service_languages",
                        principalColumns: new[] { "id", "service_id" },
                        onDelete: ReferentialAction.Restrict);
                });

            migrationBuilder.CreateIndex(
                name: "IX_push_template_definitions_service_id_key",
                table: "push_template_definitions",
                columns: new[] { "service_id", "key" },
                unique: true);

            migrationBuilder.CreateIndex(
                name: "IX_push_templates_definition_id_service_id",
                table: "push_templates",
                columns: new[] { "definition_id", "service_id" });

            migrationBuilder.CreateIndex(
                name: "IX_push_templates_definition_id_service_language_id",
                table: "push_templates",
                columns: new[] { "definition_id", "service_language_id" },
                unique: true);

            migrationBuilder.CreateIndex(
                name: "IX_push_templates_service_language_id_service_id",
                table: "push_templates",
                columns: new[] { "service_language_id", "service_id" });

            // Preserve existing email identity, variables, revisions and translations in place.
            migrationBuilder.Sql("""
                INSERT INTO templates (id, service_id, key, created, updated)
                SELECT id, service_id, key, created, updated FROM email_template_definitions;
                """);

            migrationBuilder.AddForeignKey(
                name: "FK_email_template_definitions_templates_service_id_key",
                table: "email_template_definitions",
                columns: new[] { "service_id", "key" },
                principalTable: "templates",
                principalColumns: new[] { "service_id", "key" },
                onDelete: ReferentialAction.Cascade);
        }

        /// <inheritdoc />
        protected override void Down(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.Sql("""
                DO $$ BEGIN
                    IF EXISTS (SELECT 1 FROM push_template_definitions) THEN
                        RAISE EXCEPTION 'Cannot roll back channel templates while push definitions exist. Export and explicitly remove them first.';
                    END IF;
                END $$;
                """);
            migrationBuilder.DropForeignKey(
                name: "FK_email_template_definitions_templates_service_id_key",
                table: "email_template_definitions");

            migrationBuilder.DropTable(
                name: "push_templates");

            migrationBuilder.DropTable(
                name: "push_template_definitions");

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