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refactor(db): migrate cover letter history

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Move append-only cover letter revisions into an additive provider-aware migration. Preserve manual and AI text, source metadata, ordering, and application cascade semantics.
This commit is contained in:
cesnimda
2026-08-30 18:55:20 +02:00
parent e933409698
commit 934b35a1e0
10 changed files with 137 additions and 47 deletions
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JobTrackerApi/Services/StartupInitializationExtensions.cs
-38
View File
@@ -712,25 +712,6 @@ public static class StartupInitializationExtensions
EnsureColumn(c, "AiInteractions", "EstimatedTokenCount", "ALTER TABLE AiInteractions ADD COLUMN EstimatedTokenCount INTEGER NOT NULL DEFAULT 0;");
}
// Phase 5.4: append-only cover letter history.
static void EnsureCoverLetterVersionsTable(DbConnection c)
{
Exec(c, """
CREATE TABLE IF NOT EXISTS "CoverLetterVersions" (
"Id" INTEGER NOT NULL CONSTRAINT "PK_CoverLetterVersions" PRIMARY KEY AUTOINCREMENT,
"OwnerUserId" TEXT NOT NULL,
"JobApplicationId" INTEGER NOT NULL,
"Version" INTEGER NOT NULL,
"Text" TEXT NOT NULL,
"Source" TEXT NOT NULL,
"AiAction" TEXT NULL,
"CreatedAtUtc" TEXT NOT NULL,
CONSTRAINT "FK_CoverLetterVersions_JobApplications_JobApplicationId" FOREIGN KEY ("JobApplicationId") REFERENCES "JobApplications" ("Id") ON DELETE CASCADE
);
""");
Exec(c, """CREATE INDEX IF NOT EXISTS "IX_CoverLetterVersions_Owner_Job_Version" ON "CoverLetterVersions" ("OwnerUserId", "JobApplicationId", "Version");""");
}
// Phase 5.5: user-owned interview preparation (not the AI cache InterviewPrepNote).
static void EnsureInterviewPrepItemsTable(DbConnection c)
{
@@ -756,7 +737,6 @@ public static class StartupInitializationExtensions
ReconcileGmailConnectionColumns(conn);
EnsureCareerProfileTables(conn);
ReconcileAiInteractionUsageColumns(conn);
EnsureCoverLetterVersionsTable(conn);
EnsureInterviewPrepItemsTable(conn);
// Once the base app tables exist, provision this reconciler-owned schema set and
@@ -1151,24 +1131,6 @@ public static class StartupInitializationExtensions
DropMalformedMySqlTable(conn, "CoverLetterVersions", "CreatedAtUtc", "datetime");
DropMalformedMySqlTable(conn, "InterviewPrepItems", "CreatedAtUtc", "datetime");
if (!HasMySqlTable(conn, "CoverLetterVersions") && HasMySqlTable(conn, "JobApplications"))
{
using var cmd = conn.CreateCommand();
cmd.CommandText = @"CREATE TABLE IF NOT EXISTS `CoverLetterVersions` (
`Id` int NOT NULL AUTO_INCREMENT,
`OwnerUserId` varchar(255) NOT NULL,
`JobApplicationId` int NOT NULL,
`Version` int NOT NULL,
`Text` longtext NOT NULL,
`Source` varchar(32) NOT NULL,
`AiAction` varchar(32) NULL,
`CreatedAtUtc` datetime(6) NOT NULL,
PRIMARY KEY (`Id`),
CONSTRAINT `FK_CoverLetterVersions_JobApplications_JobApplicationId` FOREIGN KEY (`JobApplicationId`) REFERENCES `JobApplications` (`Id`) ON DELETE CASCADE
);";
cmd.ExecuteNonQuery();
}
if (!HasMySqlTable(conn, "InterviewPrepItems") && HasMySqlTable(conn, "JobApplications"))
{
using var cmd = conn.CreateCommand();
JobTrackerApi/Services/StartupSchemaOwnership.cs
+1 -1
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@@ -18,6 +18,7 @@ internal static class StartupSchemaOwnership
"Attachments",
"Companies",
"Correspondences",
"CoverLetterVersions",
"CvExtractionRuns",
"CvUploadArtifacts",
"CvVariants",
@@ -60,7 +61,6 @@ internal static class StartupSchemaOwnership
"CareerProfileVersions",
"CareerProjects",
"CareerSkills",
"CoverLetterVersions",
"InterviewPrepItems",
};