mcp-gmailcal 0.10.0

use chrono::{Duration, Utc};
/// Extended Integration Tests Module
///
/// This module contains simplified integration tests for end-to-end workflows.
use mcp_gmailcal::errors::GmailApiError;
use mcp_gmailcal::utils::encode_base64_url_safe;
use serde_json::json;
use uuid::Uuid;

#[cfg(test)]
mod extended_integration_tests {
    use super::*;

    // Test data structure to simulate email workflow
    struct EmailWorkflow {
        query: String,
        messages_found: bool,
        sender_found: bool,
        event_created: bool,
    }

    impl EmailWorkflow {
        fn new(query: &str) -> Self {
            Self {
                query: query.to_string(),
                messages_found: false,
                sender_found: false,
                event_created: false,
            }
        }

        fn search_emails(&mut self) -> Result<bool, String> {
            // Simulate searching emails with the query
            println!("Searching emails with query: {}", self.query);

            // For test purposes, assume any query containing "Meeting" finds messages
            self.messages_found = self.query.contains("Meeting");

            Ok(self.messages_found)
        }

        fn lookup_sender(&mut self) -> Result<bool, String> {
            // Can only look up sender if we found messages
            if !self.messages_found {
                return Ok(false);
            }

            // Simulate looking up the sender in contacts
            println!("Looking up sender in contacts");

            // For test purposes, always find the sender
            self.sender_found = true;

            Ok(self.sender_found)
        }

        fn create_calendar_event(&mut self) -> Result<String, String> {
            // Can only create event if we found both messages and sender
            if !self.messages_found || !self.sender_found {
                return Err("Cannot create event without message and sender".to_string());
            }

            // Simulate creating a calendar event
            println!("Creating calendar event based on email content");

            // Generate a fake event ID
            let event_id = Uuid::new_v4().to_string();
            self.event_created = true;

            Ok(event_id)
        }
    }

    // Simplified email parsing workflow test
    #[tokio::test]
    async fn test_email_workflow() {
        // Set up test workflow
        let mut workflow = EmailWorkflow::new("Project Meeting Discussion");

        // Search for emails
        let found_emails = workflow.search_emails().unwrap();
        assert!(found_emails, "Should have found emails matching the query");

        // Look up the sender
        let found_sender = workflow.lookup_sender().unwrap();
        assert!(found_sender, "Should have found the sender");

        // Create a calendar event
        let event_id = workflow.create_calendar_event().unwrap();
        assert!(
            !event_id.is_empty(),
            "Should have created an event with a valid ID"
        );

        // Verify the workflow completed successfully
        assert!(workflow.event_created, "Event should have been created");
    }

    // Test for calendar integration with email content
    #[tokio::test]
    async fn test_calendar_integration_with_email() {
        // Create email content with event details
        let email_body = r"
        You're invited to a team meeting!
        
        Date: May 15, 2025
        Time: 10:00 AM - 11:00 AM
        Location: Conference Room A
        
        Please RSVP by replying to this email.
        ";

        // Create a JSON representation of the email
        let email_json = json!({
            "id": "email123",
            "threadId": "thread123",
            "payload": {
                "headers": [
                    { "name": "Subject", "value": "Team Meeting Invitation" },
                    { "name": "From", "value": "team@example.com" },
                    { "name": "To", "value": "recipient@example.com" },
                    { "name": "Date", "value": "2025-05-14T10:00:00Z" }
                ],
                "body": {
                    "data": encode_base64_url_safe(email_body.as_bytes()),
                    "size": email_body.len()
                }
            }
        });

        // In a real test, we would parse this email and extract meeting details
        // For this simplified test, we just verify that we can access the content
        let subject = email_json["payload"]["headers"][0]["value"]
            .as_str()
            .unwrap();
        assert_eq!(subject, "Team Meeting Invitation");

        // Check that the body contains our meeting details
        let encoded_body = email_json["payload"]["body"]["data"].as_str().unwrap();
        assert!(encoded_body.len() > 0);

        // In a real implementation, we would extract the date and time
        assert!(email_body.contains("Date: May 15, 2025"));
        assert!(email_body.contains("Time: 10:00 AM - 11:00 AM"));

        // Simulated event creation verification
        let tomorrow = Utc::now() + Duration::days(1);
        let one_hour_later = tomorrow + Duration::hours(1);

        // Verify we can create a valid date range
        assert!(one_hour_later > tomorrow);
    }

    // Test for parallel API operations
    #[tokio::test]
    async fn test_parallel_operations() {
        // Create multiple tasks that simulate API calls
        let mut handles = vec![];

        // Task 1: Search for emails
        let handle1 = tokio::spawn(async {
            // Simulate API call delay
            tokio::time::sleep(std::time::Duration::from_millis(100)).await;
            Ok::<_, GmailApiError>("Found 5 emails")
        });
        handles.push(handle1);

        // Task 2: Fetch contacts
        let handle2 = tokio::spawn(async {
            // Simulate API call delay
            tokio::time::sleep(std::time::Duration::from_millis(150)).await;
            Ok::<_, GmailApiError>("Found 3 contacts")
        });
        handles.push(handle2);

        // Task 3: Check calendar
        let handle3 = tokio::spawn(async {
            // Simulate API call delay
            tokio::time::sleep(std::time::Duration::from_millis(75)).await;
            Ok::<_, GmailApiError>("Found 2 calendar events")
        });
        handles.push(handle3);

        // Wait for all tasks to complete
        let results = futures::future::join_all(handles).await;

        // Check that all tasks completed successfully
        for result in results {
            // Unwrap the JoinHandle result first
            let api_result = result.unwrap();
            // Then check the API result
            assert!(api_result.is_ok());
        }
    }

    // Test for end-to-end workflow (simplified)
    #[tokio::test]
    async fn test_end_to_end_workflow() {
        // Structure to track workflow steps
        struct WorkflowSteps {
            email_found: bool,
            contact_found: bool,
            event_created: bool,
            draft_created: bool,
        }

        let mut steps = WorkflowSteps {
            email_found: false,
            contact_found: false,
            event_created: false,
            draft_created: false,
        };

        // Step 1: Find the email
        steps.email_found = true;
        assert!(steps.email_found, "Should find the email");

        // Step 2: Look up the contact
        steps.contact_found = true;
        assert!(steps.contact_found, "Should find the contact");

        // Step 3: Create a calendar event
        steps.event_created = true;
        assert!(steps.event_created, "Should create the calendar event");

        // Step 4: Create a draft reply
        steps.draft_created = true;
        assert!(steps.draft_created, "Should create the draft reply");

        // Verify all steps completed
        assert!(
            steps.email_found && steps.contact_found && steps.event_created && steps.draft_created,
            "All workflow steps should complete successfully"
        );
    }
}