revert(auth,db): rollback oauth/db env changes to restore auth flow

[ViktorSvertoka]

Summary by CodeRabbit

• Refactor
  • Enhanced database configuration handling with improved error detection for missing credentials
  • Streamlined OAuth authentication provider configuration structure

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[coderabbitai]

📝 Walkthrough

Walkthrough

Database and OAuth configuration files are refactored to eliminate dynamic getters, type aliases, and fallback mechanisms. The changes replace conditional getters with direct object literals, enforce explicit error handling for missing environment variables, and simplify configuration initialization logic.

Changes

Cohort / File(s)	Summary
Database Configuration frontend/db/index.ts	Simplified dotenv initialization; replaced dual DATABASE_URL fallback with exclusive use of DATABASE_URL_LOCAL for local environments; removed proxy-based fallback logic and added explicit error throws for missing configuration.
OAuth Configuration frontend/lib/env/auth.ts	Removed OAuthProviderEnv type alias; converted google and github property getters to direct object literals and conditional expressions, eliminating nested getter abstractions.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• feat (auth): implement Google and GitHub sign up and log in supportin… #88: Modifies frontend/lib/env/auth.ts with related OAuth provider configuration changes, converting from getter-based approach to direct object assignments.

Suggested reviewers

• AM1007

Poem

🐰 Configuration untangled with a hop and a bound,
No more getters, just objects—cleaner ground!
Error paths explicit, no proxies to hide,
The code hops cleaner with straightforward pride. ✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The title uses 'revert' but the changes show active refactoring (removing getters, inlining types, restructuring config flow) rather than reverting to a previous state. The title is misleading about the nature of the changes.	Update the title to accurately reflect the changes, such as 'refactor(auth,db): simplify environment configuration and remove dynamic fallbacks' to better represent the actual modifications made.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/auth

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No actionable comments were generated in the recent review. 🎉

🧹 Recent nitpick comments

frontend/lib/env/auth.ts (1)

40-57: Consider a lookup map to reduce ternary nesting (optional).

The nested ternary works correctly but could be slightly cleaner with a map-based approach, especially if more environments are added later. That said, for a revert PR with only three environments, this is perfectly fine as-is.

♻️ Optional refactor

-  github:
-    APP_ENV === 'local'
-      ? {
-          clientId: requireEnv('GITHUB_CLIENT_ID_LOCAL'),
-          clientSecret: requireEnv('GITHUB_CLIENT_SECRET_LOCAL'),
-          redirectUri: requireEnv('GITHUB_CLIENT_REDIRECT_URI_LOCAL'),
-        }
-      : APP_ENV === 'develop'
-        ? {
-            clientId: requireEnv('GITHUB_CLIENT_ID_DEVELOP'),
-            clientSecret: requireEnv('GITHUB_CLIENT_SECRET_DEVELOP'),
-            redirectUri: requireEnv('GITHUB_CLIENT_REDIRECT_URI_DEVELOP'),
-          }
-        : {
-            clientId: requireEnv('GITHUB_CLIENT_ID_PROD'),
-            clientSecret: requireEnv('GITHUB_CLIENT_SECRET_PROD'),
-            redirectUri: requireEnv('GITHUB_CLIENT_REDIRECT_URI_PROD'),
-          },
+  github: (() => {
+    const suffix = APP_ENV === 'local' ? 'LOCAL' : APP_ENV === 'develop' ? 'DEVELOP' : 'PROD';
+    return {
+      clientId: requireEnv(`GITHUB_CLIENT_ID_${suffix}`),
+      clientSecret: requireEnv(`GITHUB_CLIENT_SECRET_${suffix}`),
+      redirectUri: requireEnv(`GITHUB_CLIENT_REDIRECT_URI_${suffix}`),
+    };
+  })(),

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