refactor(db): migrate CV variant history

Move saved CVs and append-only revisions into an additive provider-aware migration. Preserve public slugs, builder settings, job-link nulling, and revision cascades.
2026-08-30 17:28:35 +02:00
parent 778b365f9e
commit bc28893b6f
9 changed files with 206 additions and 92 deletions
@@ -0,0 +1,105 @@
+using System;
+using JobTrackerApi.Data;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace JobTrackerApi.Migrations;
+
+/// <summary>
+/// Moves CV variants and append-only version history into migration ownership while preserving
+/// existing builder settings, public slugs, and job-tailoring relationships.
+/// </summary>
+[DbContext(typeof(JobTrackerContext))]
+[Migration("20260830128000_AdoptCvVariantSchema")]
+public sealed class AdoptCvVariantSchema : Migration
+{
+    protected override void Up(MigrationBuilder migrationBuilder)
+    {
+        if (ActiveProvider.Contains("MySql", StringComparison.OrdinalIgnoreCase))
+        {
+            migrationBuilder.Sql("""
+                CREATE TABLE IF NOT EXISTS `CvVariants` (
+                    `Id` int NOT NULL AUTO_INCREMENT,
+                    `OwnerUserId` varchar(255) NOT NULL,
+                    `PublicSlug` varchar(64) NOT NULL,
+                    `Name` varchar(255) NOT NULL,
+                    `JobApplicationId` int NULL,
+                    `SettingsJson` longtext NOT NULL,
+                    `IsPublic` tinyint(1) NOT NULL,
+                    `Version` int NOT NULL,
+                    `CreatedAtUtc` datetime(6) NOT NULL,
+                    `UpdatedAtUtc` datetime(6) NOT NULL,
+                    PRIMARY KEY (`Id`),
+                    CONSTRAINT `FK_CvVariants_JobApplications_JobApplicationId`
+                        FOREIGN KEY (`JobApplicationId`) REFERENCES `JobApplications` (`Id`) ON DELETE SET NULL
+                ) CHARACTER SET=utf8mb4;
+                CREATE INDEX IF NOT EXISTS `IX_CvVariants_JobApplicationId`
+                    ON `CvVariants` (`JobApplicationId`);
+                CREATE INDEX IF NOT EXISTS `IX_CvVariants_OwnerUserId_UpdatedAtUtc`
+                    ON `CvVariants` (`OwnerUserId`, `UpdatedAtUtc`);
+                CREATE UNIQUE INDEX IF NOT EXISTS `IX_CvVariants_PublicSlug`
+                    ON `CvVariants` (`PublicSlug`);
+
+                CREATE TABLE IF NOT EXISTS `CvVariantVersions` (
+                    `Id` int NOT NULL AUTO_INCREMENT,
+                    `OwnerUserId` varchar(255) NOT NULL,
+                    `CvVariantId` int NOT NULL,
+                    `Version` int NOT NULL,
+                    `SettingsJson` longtext NOT NULL,
+                    `Source` varchar(100) NOT NULL,
+                    `CreatedAtUtc` datetime(6) NOT NULL,
+                    PRIMARY KEY (`Id`),
+                    CONSTRAINT `FK_CvVariantVersions_CvVariants_CvVariantId`
+                        FOREIGN KEY (`CvVariantId`) REFERENCES `CvVariants` (`Id`) ON DELETE CASCADE
+                ) CHARACTER SET=utf8mb4;
+                CREATE INDEX IF NOT EXISTS `IX_CvVariantVersions_CvVariantId_Version`
+                    ON `CvVariantVersions` (`CvVariantId`, `Version`);
+                """);
+            return;
+        }
+
+        migrationBuilder.Sql("""
+            CREATE TABLE IF NOT EXISTS "CvVariants" (
+                "Id" INTEGER NOT NULL CONSTRAINT "PK_CvVariants" PRIMARY KEY AUTOINCREMENT,
+                "OwnerUserId" TEXT NOT NULL,
+                "PublicSlug" TEXT NOT NULL,
+                "Name" TEXT NOT NULL,
+                "JobApplicationId" INTEGER NULL,
+                "SettingsJson" TEXT NOT NULL,
+                "IsPublic" INTEGER NOT NULL,
+                "Version" INTEGER NOT NULL,
+                "CreatedAtUtc" TEXT NOT NULL,
+                "UpdatedAtUtc" TEXT NOT NULL,
+                CONSTRAINT "FK_CvVariants_JobApplications_JobApplicationId"
+                    FOREIGN KEY ("JobApplicationId") REFERENCES "JobApplications" ("Id") ON DELETE SET NULL
+            );
+            CREATE INDEX IF NOT EXISTS "IX_CvVariants_JobApplicationId"
+                ON "CvVariants" ("JobApplicationId");
+            CREATE INDEX IF NOT EXISTS "IX_CvVariants_OwnerUserId_UpdatedAtUtc"
+                ON "CvVariants" ("OwnerUserId", "UpdatedAtUtc");
+            CREATE UNIQUE INDEX IF NOT EXISTS "IX_CvVariants_PublicSlug"
+                ON "CvVariants" ("PublicSlug");
+
+            CREATE TABLE IF NOT EXISTS "CvVariantVersions" (
+                "Id" INTEGER NOT NULL CONSTRAINT "PK_CvVariantVersions" PRIMARY KEY AUTOINCREMENT,
+                "OwnerUserId" TEXT NOT NULL,
+                "CvVariantId" INTEGER NOT NULL,
+                "Version" INTEGER NOT NULL,
+                "SettingsJson" TEXT NOT NULL,
+                "Source" TEXT NOT NULL,
+                "CreatedAtUtc" TEXT NOT NULL,
+                CONSTRAINT "FK_CvVariantVersions_CvVariants_CvVariantId"
+                    FOREIGN KEY ("CvVariantId") REFERENCES "CvVariants" ("Id") ON DELETE CASCADE
+            );
+            CREATE INDEX IF NOT EXISTS "IX_CvVariantVersions_CvVariantId_Version"
+                ON "CvVariantVersions" ("CvVariantId", "Version");
+            """);
+    }
+
+    protected override void Down(MigrationBuilder migrationBuilder)
+    {
+        // Preserve CV documents and revision history created before migration ownership.
+    }
+}