graph TD A[Start DataCollectorAgent] --> B[Load campaign_config.json] B --> C[Authenticate with Ad Platform API] C --> D[Daily Data Collection Loop] D --> E[Query Ad Platform API] E --> F[Fetch Raw Metrics] F --> G{Data Retrieved?} G -->|Yes| H[Process Raw Data] G -->|No| I[Log Error & Retry] I --> E H --> J[Transform to JSON Format] J --> K[Update daily_metrics.json] K --> L{Campaign Complete?} L -->|No| M[Wait 24 Hours] M --> D L -->|Yes| N[Finalize JSON Output] N --> O[Validate Final Data] O --> P[Export daily_metrics.json] P --> Q[End DataCollectorAgent]