feat(monetization): add DodoPayments webhook, subscription helpers, pricing checkout links, and Pro tier feature gates

[Rayan9064]

Summary by CodeRabbit

• New Features

  • Added subscription-aware usage limits for resources and AI queries.
  • Free-tier users are prompted to upgrade when limits are reached.
  • Added DodoPayments checkout flows for Pro and API plans.
  • Added payment webhook handling to update subscription status and plans.

• Documentation

  • Documented tier-limit errors, payment webhooks, subscription data, and monthly AI usage tracking.

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Project	Deployment	Actions	Updated (UTC)
dumpit	Ready	Preview, Comment	Jul 29, 2026 12:38pm

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 1f9875f1-8322-480a-9fef-b41bda6a8651

📥 Commits

Reviewing files that changed from the base of the PR and between 9451fca and 527be31.

📒 Files selected for processing (8)

• app/api/_utils/subscription.ts
• app/api/ai/ask/route.ts
• app/api/resources/pdf/route.ts
• app/api/resources/route.ts
• app/api/webhooks/dodopayments/route.ts
• app/components/landing/Pricing.tsx
• docs/api-spec.md
• docs/data-model.md

---

📝 Walkthrough

Walkthrough

Adds DodoPayments webhook synchronization, subscription-aware resource and AI quotas, monthly usage tracking, updated pricing checkout links, and documentation for the new subscription data and API responses.

Changes

Subscription billing and quota enforcement

Layer / File(s)	Summary
Tier quota enforcement app/api/_utils/subscription.ts, app/api/ai/ask/route.ts, app/api/resources/..., docs/api-spec.md, docs/data-model.md	Subscription helpers determine tiers and statuses, enforce 50-resource and monthly AI query limits, record usage, and document the resulting responses and Firestore structures.
Payment webhook synchronization app/api/webhooks/dodopayments/route.ts, docs/api-spec.md, docs/data-model.md	The DodoPayments webhook verifies signatures, resolves users, updates subscription fields, records events, and documents the endpoint and subscription collections.
DodoPayments checkout links app/components/landing/Pricing.tsx	Pricing CTAs generate DodoPayments links for Pro and API plans, including optional authenticated-user metadata, while Starter retains its configured link.

Estimated code review effort: 4 (Complex) | ~45 minutes

Possibly related PRs

• Rayan9064/dumpit#20: Changes the same resources POST route with resource-limit enforcement.
• Rayan9064/dumpit#93: Changes the same AI ask route with subscription and usage enforcement.
• Rayan9064/dumpit#120: Adds related early limit guards to the AI and resources routes.

Suggested labels: enhancement

Sequence Diagram(s)

sequenceDiagram
  participant DodoPayments
  participant WebhookRoute
  participant Firestore
  DodoPayments->>WebhookRoute: Send signed subscription event
  WebhookRoute->>WebhookRoute: Verify and parse event
  WebhookRoute->>Firestore: Update user subscription
  WebhookRoute->>Firestore: Record subscription event
  Firestore-->>WebhookRoute: Confirm writes
  WebhookRoute-->>DodoPayments: Return JSON response

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/dodopayments-monetization

Warning

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🔧 ESLint

If the error stems from missing dependencies, add them to the package.json file. For unrecoverable errors (e.g., due to private dependencies), disable the tool in the CodeRabbit configuration.

app/api/_utils/subscription.ts

ESLint skipped: missing config or dependency (missing-dependency). The ESLint configuration references a package that is not available in the sandbox.

app/api/ai/ask/route.ts

ESLint skipped: the ESLint configuration for this file references a package that is not available in the sandbox.

app/api/resources/pdf/route.ts

ESLint skipped: the ESLint configuration for this file references a package that is not available in the sandbox.

• 3 others

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