Add log level configuration support (#272)

Add log level configuration support via config.yaml and UI settings.

---------

Co-authored-by: Shantur Rathore <i@shantur.com>

packages/server/src/settings/service.ts

@@ -1,6 +1,7 @@
 import type { Logger } from "../logger"
 import type { EventBus } from "../events/bus"
 import type { ConfigLocation } from "../config/location"
+import { z } from "zod"
 import { YamlDocStore, type SettingsDoc } from "./yaml-doc-store"
 import { migrateSettingsLayout } from "./migrate"
 import type { WorkspaceEventPayload } from "../api-types"
@@ -8,6 +9,54 @@ import { sanitizeConfigOwner } from "./public-config"
 
 export type DocKind = "config" | "state"
 
+const CanonicalLogLevelSchema = z.preprocess(
+  (value) => (typeof value === "string" ? value.trim().toUpperCase() : value),
+  z.enum(["DEBUG", "INFO", "WARN", "ERROR"]),
+)
+
+function isPlainObject(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value)
+}
+
+function isDeepEqual(a: unknown, b: unknown): boolean {
+  if (a === b) return true
+  try {
+    return JSON.stringify(a) === JSON.stringify(b)
+  } catch {
+    return false
+  }
+}
+
+function normalizeServerConfigOwner(value: SettingsDoc): SettingsDoc {
+  if (!isPlainObject(value)) {
+    return {}
+  }
+
+  const next: SettingsDoc = { ...value }
+  const parsedLogLevel = CanonicalLogLevelSchema.safeParse(next.logLevel)
+  if (parsedLogLevel.success) {
+    next.logLevel = parsedLogLevel.data
+  } else if (next.logLevel !== undefined) {
+    next.logLevel = "DEBUG"
+  }
+  return next
+}
+
+function normalizeConfigDoc(doc: SettingsDoc): SettingsDoc {
+  if (!isPlainObject(doc)) {
+    return {}
+  }
+
+  if (!isPlainObject(doc.server)) {
+    return doc
+  }
+
+  return {
+    ...doc,
+    server: normalizeServerConfigOwner(doc.server as SettingsDoc),
+  }
+}
+
 export class SettingsService {
   private readonly configStore: YamlDocStore
   private readonly stateStore: YamlDocStore
@@ -23,22 +72,44 @@ export class SettingsService {
   }
 
   getDoc(kind: DocKind): SettingsDoc {
-    return kind === "config" ? this.configStore.get() : this.stateStore.get()
+    if (kind !== "config") {
+      return this.stateStore.get()
+    }
+
+    const current = this.configStore.get()
+    const normalized = normalizeConfigDoc(current)
+    if (!isDeepEqual(current, normalized)) {
+      this.configStore.replace(normalized)
+    }
+    return normalized
   }
 
   mergePatchDoc(kind: DocKind, patch: unknown): SettingsDoc {
-    const updated = kind === "config" ? this.configStore.mergePatch(patch) : this.stateStore.mergePatch(patch)
+    const updated =
+      kind === "config"
+        ? this.configStore.replace(normalizeConfigDoc(this.configStore.mergePatch(patch)))
+        : this.stateStore.mergePatch(patch)
     this.publish(kind, "*")
     return updated
   }
 
   getOwner(kind: DocKind, owner: string): SettingsDoc {
-    return kind === "config" ? this.configStore.getOwner(owner) : this.stateStore.getOwner(owner)
+    if (kind !== "config") {
+      return this.stateStore.getOwner(owner)
+    }
+
+    return owner === "server"
+      ? normalizeServerConfigOwner(this.getDoc("config").server as SettingsDoc)
+      : this.getDoc("config")[owner] as SettingsDoc
   }
 
   mergePatchOwner(kind: DocKind, owner: string, patch: unknown): SettingsDoc {
     const updated =
-      kind === "config" ? this.configStore.mergePatchOwner(owner, patch) : this.stateStore.mergePatchOwner(owner, patch)
+      kind === "config"
+        ? owner === "server"
+          ? this.configStore.replaceOwner(owner, normalizeServerConfigOwner(this.configStore.mergePatchOwner(owner, patch)))
+          : this.configStore.mergePatchOwner(owner, patch)
+        : this.stateStore.mergePatchOwner(owner, patch)
     this.publish(kind, owner, updated)
     return updated
   }