Bug gixes, features added, GUI updates and more

oAI/Services/DatabaseService.swift

@@ -40,6 +40,14 @@ struct SettingRecord: Codable, FetchableRecord, PersistableRecord, Sendable {
     var value: String
 }
 
+struct HistoryRecord: Codable, FetchableRecord, PersistableRecord, Sendable {
+    static let databaseTableName = "command_history"
+
+    var id: String
+    var input: String
+    var timestamp: String
+}
+
 // MARK: - DatabaseService
 
 final class DatabaseService: Sendable {
@@ -48,6 +56,9 @@ final class DatabaseService: Sendable {
     private let dbQueue: DatabaseQueue
     private let isoFormatter: ISO8601DateFormatter
 
+    // Command history limit - keep most recent 5000 entries
+    private static let maxHistoryEntries = 5000
+
     nonisolated private init() {
         isoFormatter = ISO8601DateFormatter()
         isoFormatter.formatOptions = [.withInternetDateTime, .withFractionalSeconds]
@@ -102,6 +113,20 @@ final class DatabaseService: Sendable {
             }
         }
 
+        migrator.registerMigration("v3") { db in
+            try db.create(table: "command_history") { t in
+                t.primaryKey("id", .text)
+                t.column("input", .text).notNull()
+                t.column("timestamp", .text).notNull()
+            }
+
+            try db.create(
+                index: "command_history_on_timestamp",
+                on: "command_history",
+                columns: ["timestamp"]
+            )
+        }
+
         return migrator
     }
 
@@ -315,4 +340,68 @@ final class DatabaseService: Sendable {
             return true
         }
     }
+
+    // MARK: - Command History Operations
+
+    nonisolated func saveCommandHistory(input: String) {
+        let now = Date()
+        let record = HistoryRecord(
+            id: UUID().uuidString,
+            input: input,
+            timestamp: isoFormatter.string(from: now)
+        )
+
+        try? dbQueue.write { db in
+            try record.insert(db)
+
+            // Clean up old entries if we exceed the limit
+            let count = try HistoryRecord.fetchCount(db)
+            if count > Self.maxHistoryEntries {
+                // Delete oldest entries to get back to limit
+                let excess = count - Self.maxHistoryEntries
+                try db.execute(
+                    sql: """
+                    DELETE FROM command_history
+                    WHERE id IN (
+                        SELECT id FROM command_history
+                        ORDER BY timestamp ASC
+                        LIMIT ?
+                    )
+                    """,
+                    arguments: [excess]
+                )
+            }
+        }
+    }
+
+    nonisolated func loadCommandHistory() throws -> [(input: String, timestamp: Date)] {
+        try dbQueue.read { db in
+            let records = try HistoryRecord
+                .order(Column("timestamp").desc)
+                .fetchAll(db)
+
+            return records.compactMap { record in
+                guard let date = isoFormatter.date(from: record.timestamp) else {
+                    return nil
+                }
+                return (input: record.input, timestamp: date)
+            }
+        }
+    }
+
+    nonisolated func searchCommandHistory(query: String) throws -> [(input: String, timestamp: Date)] {
+        try dbQueue.read { db in
+            let records = try HistoryRecord
+                .filter(Column("input").like("%\(query)%"))
+                .order(Column("timestamp").desc)
+                .fetchAll(db)
+
+            return records.compactMap { record in
+                guard let date = isoFormatter.date(from: record.timestamp) else {
+                    return nil
+                }
+                return (input: record.input, timestamp: date)
+            }
+        }
+    }
 }

oAI/Services/SettingsService.swift

@@ -89,6 +89,19 @@ class SettingsService {
         }
     }
 
+    var systemPrompt: String? {
+        get { cache["systemPrompt"] }
+        set {
+            if let value = newValue, !value.isEmpty {
+                cache["systemPrompt"] = value
+                DatabaseService.shared.setSetting(key: "systemPrompt", value: value)
+            } else {
+                cache.removeValue(forKey: "systemPrompt")
+                DatabaseService.shared.deleteSetting(key: "systemPrompt")
+            }
+        }
+    }
+
     // MARK: - Feature Settings
 
     var onlineMode: Bool {