pipe-audit-core 0.1.8

//! Note: Before moving data, we validate profile connectivity.
//! - If source profile is invalid → abort validation.
//! - If destination/quarantine profile is invalid → skip movement and log error.
//! This prevents wasted work and clearer operator feedback.
use crate::connectors::fetch::fetch_data_from_source; // fetch raw bytes from source connector
use crate::contracts::load_contract_for_file; // load TOML contract into SchemaContracts
use crate::engine::log_action; // audit logging
use crate::engine::validation::execute_validation; // run validators against data
use crate::logging::error::{ValidationError, ValidationResult};
use crate::logging::schema::{Executor, RuleResult};
use crate::logging::{AuditLogEntry, writer::log_and_print};
use crate::movement::FileMovement; // handles writing success/quarantine data
use crate::profiles::{Profiles, load_profiles}; // profile management
use chrono::Utc;
use std::path::Path as StdPath;

/// Outcome of running a contract validation
pub struct ValidationOutcome {
    pub passed: bool,             // true if no rules failed
    pub pass_count: usize,        // number of passing rules
    pub fail_count: usize,        // number of failing rules
    pub results: Vec<RuleResult>, // detailed results per rule
}

/// Run a contract validation end-to-end:
/// - Load contract + profiles
/// - Fetch data from source
/// - Execute validations
/// - Move data to destination or quarantine (only if profiles are valid)
/// - Log all actions
pub async fn run_contract_validation(
    contract_name: &str,
    executor: &Executor,
    log_to_console: bool,
) -> ValidationResult<(ValidationOutcome, String)> {
    // --- Contract existence check ---
    let contract_path = format!("contracts/{}.toml", contract_name);
    if !StdPath::new(&contract_path).exists() {
        return Err(ValidationError::Other(format!(
            "Contract '{}' not found",
            contract_name
        )));
    }

    // --- Load contract + profiles ---
    let contracts = load_contract_for_file(StdPath::new(&contract_path));
    let profiles: Profiles = load_profiles()?;

    // --- Validate source config ---
    let source = contracts
        .source
        .as_ref()
        .ok_or_else(|| ValidationError::Other("Contract missing source".to_string()))?;
    let location = source
        .location
        .as_ref()
        .ok_or_else(|| ValidationError::Other("Source missing location".to_string()))?;

    // --- Start log ---
    let start_message = log_action(
        "contract_validation_started",
        None,
        Some(contract_name),
        None,
        None,
    );
    if log_to_console {
        println!("{}", start_message);
    }

    // --- Fetch data ---
    let data = fetch_data_from_source(source, &profiles).await?;
    let _ = log_action(
        "file_read",
        Some(&format!("bytes={}", data.len())),
        None,
        None,
        Some(location),
    );

    // --- Determine file extension ---
    let extension = source
        .location
        .as_ref()
        .and_then(|loc| StdPath::new(loc).extension().and_then(|s| s.to_str()))
        .unwrap_or("csv");

    // --- Execute validations ---
    let results = execute_validation(&data, extension, &contracts, executor).await?;
    let pass_count = results.iter().filter(|r| r.result == "pass").count();
    let fail_count = results.iter().filter(|r| r.result == "fail").count();
    let validation_passed = fail_count == 0;

    // --- Load DataFrame for movement ---
    let original_location = source.location.as_deref().unwrap_or("unknown");
    let driver = crate::drivers::get_driver(extension)?;
    let df = driver.load(&data)?;

    // --- Validate profile connectivity before movement ---
    let (source_valid, dest_valid, quarantine_valid) = FileMovement::validate_profiles(
        contracts.source.as_ref(),
        contracts.destination.as_ref(),
        contracts.quarantine.as_ref(),
        &profiles,
    )
    .await;

    if !source_valid {
        return Err(ValidationError::Other(
            "Source profile connectivity failed".to_string(),
        ));
    }

    // --- Movement logic ---
    if validation_passed {
        if let Some(dest) = &contracts.destination {
            if dest.r#type != "not_moved" {
                if !dest_valid {
                    log_and_print(
                        &AuditLogEntry {
                            timestamp: Utc::now().to_rfc3339(),
                            level: "AUDIT",
                            event: "movement_skipped",
                            contract: Some(crate::logging::schema::Contract {
                                name: &contracts.contract.name,
                                version: &contracts.contract.version,
                            }),
                            target: None,
                            results: None,
                            executor: executor.clone(),
                            details: Some("Destination profile connectivity failed"),
                            summary: None,
                        },
                        "⚠️ Skipped movement: destination profile invalid",
                    );
                } else {
                    match FileMovement::write_success_data(&df, original_location, dest, &profiles)
                        .await
                    {
                        Ok(_) => log_and_print(
                            &AuditLogEntry {
                                timestamp: Utc::now().to_rfc3339(),
                                level: "AUDIT",
                                event: "movement_success",
                                contract: Some(crate::logging::schema::Contract {
                                    name: &contracts.contract.name,
                                    version: &contracts.contract.version,
                                }),
                                target: None,
                                results: None,
                                executor: executor.clone(),
                                details: Some("Data written to destination"),
                                summary: None,
                            },
                            "✅ Data written to destination",
                        ),
                        Err(e) => log_and_print(
                            &AuditLogEntry {
                                timestamp: Utc::now().to_rfc3339(),
                                level: "AUDIT",
                                event: "movement_error",
                                contract: Some(crate::logging::schema::Contract {
                                    name: &contracts.contract.name,
                                    version: &contracts.contract.version,
                                }),
                                target: None,
                                results: None,
                                executor: executor.clone(),
                                details: Some(&format!("Failed to write to destination: {}", e)),
                                summary: None,
                            },
                            &format!("❌ Failed to write to destination: {}", e),
                        ),
                    }
                }
            }
        }
    } else {
        if let Some(quarantine) = &contracts.quarantine {
            if quarantine.r#type != "not_moved" {
                if !quarantine_valid {
                    log_and_print(
                        &AuditLogEntry {
                            timestamp: Utc::now().to_rfc3339(),
                            level: "AUDIT",
                            event: "movement_skipped",
                            contract: Some(crate::logging::schema::Contract {
                                name: &contracts.contract.name,
                                version: &contracts.contract.version,
                            }),
                            target: None,
                            results: None,
                            executor: executor.clone(),
                            details: Some("Quarantine profile connectivity failed"),
                            summary: None,
                        },
                        "⚠️ Skipped movement: quarantine profile invalid",
                    );
                } else {
                    match FileMovement::write_quarantine_data(
                        &df,
                        original_location,
                        quarantine,
                        &profiles,
                    )
                    .await
                    {
                        Ok(_) => log_and_print(
                            &AuditLogEntry {
                                timestamp: Utc::now().to_rfc3339(),
                                level: "AUDIT",
                                event: "movement_quarantine",
                                contract: Some(crate::logging::schema::Contract {
                                    name: &contracts.contract.name,
                                    version: &contracts.contract.version,
                                }),
                                target: None,
                                results: None,
                                executor: executor.clone(),
                                details: Some("Data written to quarantine"),
                                summary: None,
                            },
                            "⚠️ Data quarantined",
                        ),
                        Err(e) => log_and_print(
                            &AuditLogEntry {
                                timestamp: Utc::now().to_rfc3339(),
                                level: "AUDIT",
                                event: "movement_error",
                                contract: Some(crate::logging::schema::Contract {
                                    name: &contracts.contract.name,
                                    version: &contracts.contract.version,
                                }),
                                target: None,
                                results: None,
                                executor: executor.clone(),
                                details: Some(&format!("Failed to write to quarantine: {}", e)),
                                summary: None,
                            },
                            &format!("❌ Failed to write to quarantine: {}", e),
                        ),
                    }
                }
            }
        }
    }

    // --- Completion log ---
    let details = format!("pass={}, fail={}", pass_count, fail_count);
    let message = log_action(
        "contract_validation_completed",
        Some(&details),
        Some(&contracts.contract.name),
        Some(&contracts.contract.version),
        None,
    );
    if log_to_console {
        println!("{}", message);
    }

    Ok((
        ValidationOutcome {
            passed: validation_passed,
            pass_count,
            fail_count,
            results,
        },
        message,
    ))
}