fortress-cli 1.0.3

use serde::{Serialize, Deserialize};
use async_graphql::{SimpleObject, Context, Result, Object, Enum, Union};
use chrono::{DateTime, Utc};
use std::collections::HashMap;

#[derive(SimpleObject, Clone, Serialize, Deserialize)]
pub struct ApiVersion {
    pub version: String,
    pub deprecated: bool,
    pub removal_date: Option<DateTime<Utc>>,
    pub supported_until: Option<DateTime<Utc>>,
    pub migration_guide: Option<String>,
    pub features: Vec<String>,
    pub breaking_changes: Vec<BreakingChange>,
    pub compatibility: CompatibilityInfo,
}

#[derive(SimpleObject, Clone, Serialize, Deserialize)]
pub struct BreakingChange {
    pub component: String,
    pub description: String,
    pub migration_required: bool,
    pub affected_operations: Vec<String>,
}

#[derive(SimpleObject, Clone, Serialize, Deserialize)]
pub struct CompatibilityInfo {
    pub min_client_version: String,
    pub max_client_version: Option<String>,
    pub protocol_version: String,
    pub backward_compatible: bool,
    pub forward_compatible: bool,
}

#[derive(SimpleObject, Clone)]
pub struct VersionInfo {
    pub current: String,
    pub supported: Vec<ApiVersion>,
    pub deprecated: Vec<ApiVersion>,
    pub removed: Vec<ApiVersion>,
    pub default_version: String,
    pub release_notes: HashMap<String, ReleaseNotes>,
}

#[derive(SimpleObject, Clone, Serialize, Deserialize)]
pub struct ReleaseNotes {
    pub version: String,
    pub release_date: DateTime<Utc>,
    pub features: Vec<String>,
    pub bug_fixes: Vec<String>,
    pub security_updates: Vec<String>,
    pub breaking_changes: Vec<BreakingChange>,
    pub migration_notes: Option<String>,
}

#[derive(SimpleObject, Clone)]
pub struct DeprecationWarning {
    pub message: String,
    pub removal_date: DateTime<Utc>,
    pub alternative: String,
    pub migration_guide: String,
    pub urgency: DeprecationUrgency,
}

#[derive(Enum, Clone, Copy, Debug, Eq, PartialEq)]
pub enum DeprecationUrgency {
    Low,
    Medium,
    High,
    Critical,
}

#[derive(Enum, Clone, Copy, Debug, Eq, PartialEq)]
pub enum CheckStatus {
    Pass,
    Warning,
    Fail,
}

#[derive(SimpleObject, Clone)]
pub struct MigrationScript {
    pub from_version: String,
    pub to_version: String,
    pub steps: Vec<MigrationStep>,
    pub estimated_time_secs: u64,
    pub complexity: MigrationComplexity,
    pub prerequisites: Vec<String>,
    pub rollback_available: bool,
}

#[derive(SimpleObject, Clone)]
pub struct MigrationStep {
    pub description: String,
    pub code: String,
    pub breaking_change: bool,
    pub estimated_duration_secs: u64,
    pub verification_query: Option<String>,
}

#[derive(Enum, Clone, Copy, Debug, Eq, PartialEq)]
pub enum MigrationComplexity {
    Low,
    Medium,
    High,
    Expert,
}

pub struct VersionRegistry {
    versions: HashMap<String, ApiVersion>,
    default_version: String,
    deprecation_manager: DeprecationManager,
}

impl VersionRegistry {
    pub fn new() -> Self {
        let mut registry = Self {
            versions: HashMap::new(),
            default_version: "v2".to_string(),
            deprecation_manager: DeprecationManager::new(),
        };
        
        // Register supported versions
        registry.register_version(ApiVersion {
            version: "v1".to_string(),
            deprecated: false,
            removal_date: None,
            supported_until: Some(DateTime::parse_from_rfc3339("2024-12-31T23:59:59Z").unwrap().with_timezone(&Utc)),
            migration_guide: Some("https://docs.fortress.security/migration/v1-to-v2".to_string()),
            features: vec![
                "basic_authentication".to_string(),
                "simple_encryption".to_string(),
                "basic_queries".to_string(),
                "file_operations".to_string(),
            ],
            breaking_changes: vec![],
            compatibility: CompatibilityInfo {
                min_client_version: "1.0.0".to_string(),
                max_client_version: None,
                protocol_version: "1.0".to_string(),
                backward_compatible: true,
                forward_compatible: false,
            },
        });
        
        registry.register_version(ApiVersion {
            version: "v2".to_string(),
            deprecated: false,
            removal_date: None,
            supported_until: None,
            migration_guide: None,
            features: vec![
                "enhanced_authentication".to_string(),
                "field_level_encryption".to_string(),
                "advanced_queries".to_string(),
                "real_time_subscriptions".to_string(),
                "performance_monitoring".to_string(),
                "batch_operations".to_string(),
                "query_optimization".to_string(),
                "compliance_reporting".to_string(),
            ],
            breaking_changes: vec![
                BreakingChange {
                    component: "authentication".to_string(),
                    description: "JWT token format changed to include refresh token".to_string(),
                    migration_required: true,
                    affected_operations: vec!["login".to_string(), "token_refresh".to_string()],
                },
                BreakingChange {
                    component: "queries".to_string(),
                    description: "Query response format changed to include metadata".to_string(),
                    migration_required: false,
                    affected_operations: vec!["execute_query".to_string(), "batch_queries".to_string()],
                },
            ],
            compatibility: CompatibilityInfo {
                min_client_version: "2.0.0".to_string(),
                max_client_version: None,
                protocol_version: "2.0".to_string(),
                backward_compatible: false,
                forward_compatible: true,
            },
        });
        
        registry.register_version(ApiVersion {
            version: "v3".to_string(),
            deprecated: false,
            removal_date: None,
            supported_until: None,
            migration_guide: Some("https://docs.fortress.security/migration/v2-to-v3".to_string()),
            features: vec![
                "quantum_resistant_crypto".to_string(),
                "advanced_compliance".to_string(),
                "ml_analytics".to_string(),
                "edge_computing".to_string(),
                "zero_knowledge_proofs".to_string(),
                "blockchain_audit".to_string(),
            ],
            breaking_changes: vec![
                BreakingChange {
                    component: "encryption".to_string(),
                    description: "Default encryption algorithm changed to AEGIS256".to_string(),
                    migration_required: true,
                    affected_operations: vec!["encrypt".to_string(), "decrypt".to_string(), "key_generate".to_string()],
                },
                BreakingChange {
                    component: "compliance".to_string(),
                    description: "Compliance framework data structure changed".to_string(),
                    migration_required: true,
                    affected_operations: vec!["compliance_audit".to_string(), "compliance_report".to_string()],
                },
            ],
            compatibility: CompatibilityInfo {
                min_client_version: "3.0.0".to_string(),
                max_client_version: None,
                protocol_version: "3.0".to_string(),
                backward_compatible: false,
                forward_compatible: true,
            },
        });
        
        registry
    }
    
    pub fn register_version(&mut self, version: ApiVersion) {
        self.versions.insert(version.version.clone(), version);
    }
    
    pub fn get_version(&self, version: &str) -> Option<&ApiVersion> {
        self.versions.get(version)
    }
    
    pub fn is_supported(&self, version: &str) -> bool {
        if let Some(api_version) = self.get_version(version) {
            !api_version.deprecated && api_version.removal_date.is_none()
        } else {
            false
        }
    }
    
    pub fn is_deprecated(&self, version: &str) -> bool {
        if let Some(api_version) = self.get_version(version) {
            api_version.deprecated
        } else {
            false
        }
    }
    
    pub fn get_default_version(&self) -> &str {
        &self.default_version
    }
    
    pub fn list_supported_versions(&self) -> Vec<&ApiVersion> {
        self.versions.values()
            .filter(|v| !v.deprecated && v.removal_date.is_none())
            .collect()
    }
    
    pub fn list_deprecated_versions(&self) -> Vec<&ApiVersion> {
        self.versions.values()
            .filter(|v| v.deprecated)
            .collect()
    }
    
    pub fn get_compatible_versions(&self, client_version: &str) -> Vec<&ApiVersion> {
        self.versions.values()
            .filter(|v| {
                // Simple version compatibility check
                // In a real implementation, this would use semantic versioning
                v.compatibility.backward_compatible || v.version == client_version
            })
            .collect()
    }
    
    pub fn get_migration_path(&self, from: &str, to: &str) -> Option<Vec<String>> {
        // Simple migration path calculation
        // In a real implementation, this would be more sophisticated
        if from == to {
            return Some(vec![from.to_string()]);
        }
        
        let mut path = vec![from.to_string()];
        
        // For now, assume direct migration is possible
        if self.get_version(to).is_some() {
            path.push(to.to_string());
            return Some(path);
        }
        
        None
    }
}

// Version-aware resolvers
pub struct UserResolver;

#[Object]
impl UserResolver {
    /// Get user information with version-aware response
    async fn user(
        &self, 
        ctx: &Context<'_>, 
        id: String, 
        version: Option<String>
    ) -> Result<UserResponse> {
        let version_registry = ctx.data::<VersionRegistry>()?;
        let requested_version = version.unwrap_or_else(|| version_registry.get_default_version().to_string());
        
        // Validate version
        if !version_registry.is_supported(&requested_version) {
            return Err(async_graphql::Error::new(format!(
                "Version {} is not supported. Use {} or later.",
                requested_version,
                version_registry.get_default_version()
            )));
        }
        
        match requested_version.as_str() {
            "v1" => {
                let user = fetch_user_v1(&id).await?;
                Ok(UserResponse::V1(user))
            },
            "v2" => {
                let user = fetch_user_v2(&id).await?;
                Ok(UserResponse::V2(user))
            },
            "v3" => {
                let user = fetch_user_v3(&id).await?;
                Ok(UserResponse::V3(user))
            },
            _ => Err(async_graphql::Error::new("Unsupported version")),
        }
    }
    
    /// List users with version filtering
    async fn users(
        &self, 
        ctx: &Context<'_>, 
        version: Option<String>,
        #[graphql(desc = "Filter by user status")] status: Option<String>
    ) -> Result<Vec<UserResponse>> {
        let version_registry = ctx.data::<VersionRegistry>()?;
        let requested_version = version.unwrap_or_else(|| version_registry.get_default_version().to_string());
        
        if !version_registry.is_supported(&requested_version) {
            return Err(async_graphql::Error::new(format!("Version {} is not supported", requested_version)));
        }
        
        let users = match requested_version.as_str() {
            "v1" => {
                let v1_users = fetch_users_v1(status).await?;
                v1_users.into_iter().map(UserResponse::V1).collect()
            },
            "v2" => {
                let v2_users = fetch_users_v2(status).await?;
                v2_users.into_iter().map(UserResponse::V2).collect()
            },
            "v3" => {
                let v3_users = fetch_users_v3(status).await?;
                v3_users.into_iter().map(UserResponse::V3).collect()
            },
            _ => return Err(async_graphql::Error::new("Unsupported version")),
        };
        
        Ok(users)
    }
}

#[derive(SimpleObject, Clone)]
#[graphql(name = "UserV1")]
pub struct UserV1 {
    pub id: String,
    pub name: String,
    pub email: String,
    pub created_at: DateTime<Utc>,
}

#[derive(SimpleObject, Clone)]
#[graphql(name = "UserV2")]
pub struct UserV2 {
    pub id: String,
    pub name: String,
    pub email: String,
    pub profile: UserProfile,
    pub created_at: DateTime<Utc>,
    pub updated_at: DateTime<Utc>,
    pub last_login: Option<DateTime<Utc>>,
    pub permissions: Vec<String>,
}

#[derive(SimpleObject, Clone)]
#[graphql(name = "UserV3")]
pub struct UserV3 {
    pub id: String,
    pub name: String,
    pub email: String,
    pub profile: UserProfileV3,
    pub created_at: DateTime<Utc>,
    pub updated_at: DateTime<Utc>,
    pub last_login: Option<DateTime<Utc>>,
    pub permissions: Vec<String>,
    pub security_context: SecurityContext,
    pub compliance_flags: ComplianceFlags,
}

#[derive(SimpleObject, Clone)]
pub struct UserProfile {
    pub bio: Option<String>,
    pub avatar_url: Option<String>,
    pub preferences: serde_json::Value,
}

#[derive(SimpleObject, Clone)]
pub struct UserProfileV3 {
    pub bio: Option<String>,
    pub avatar_url: Option<String>,
    pub preferences: serde_json::Value,
    pub privacy_settings: PrivacySettings,
    pub notification_settings: NotificationSettings,
}

#[derive(SimpleObject, Clone)]
pub struct PrivacySettings {
    pub profile_visibility: String,
    pub data_sharing: bool,
    pub analytics_opt_out: bool,
}

#[derive(SimpleObject, Clone)]
pub struct NotificationSettings {
    pub email_notifications: bool,
    pub push_notifications: bool,
    pub security_alerts: bool,
}

#[derive(SimpleObject, Clone)]
pub struct SecurityContext {
    pub mfa_enabled: bool,
    pub last_password_change: DateTime<Utc>,
    pub failed_login_attempts: u32,
    pub device_trust_score: f64,
}

#[derive(SimpleObject, Clone)]
pub struct ComplianceFlags {
    pub gdpr_compliant: bool,
    pub data_retention_days: u32,
    pub audit_required: bool,
    pub classification: String,
}

#[derive(Union, Clone)]
pub enum UserResponse {
    V1(UserV1),
    V2(UserV2),
    V3(UserV3),
}

// Deprecation management
pub struct DeprecationManager {
    deprecations: HashMap<String, ApiDeprecation>,
}

#[derive(SimpleObject, Clone)]
pub struct ApiDeprecation {
    pub deprecated_version: String,
    pub removal_date: DateTime<Utc>,
    pub alternative: String,
    pub migration_guide: String,
    pub warning_message: String,
    pub urgency: DeprecationUrgency,
}

impl DeprecationManager {
    pub fn new() -> Self {
        let mut manager = Self {
            deprecations: HashMap::new(),
        };
        
        // Register deprecations
        manager.register_deprecation(ApiDeprecation {
            deprecated_version: "v1".to_string(),
            removal_date: DateTime::parse_from_rfc3339("2024-12-31T23:59:59Z").unwrap().with_timezone(&Utc),
            alternative: "v2".to_string(),
            migration_guide: "https://docs.fortress.security/migration/v1-to-v2".to_string(),
            warning_message: "API v1 is deprecated and will be removed on 2024-12-31. Please migrate to v2.".to_string(),
            urgency: DeprecationUrgency::High,
        });
        
        manager
    }
    
    pub fn register_deprecation(&mut self, deprecation: ApiDeprecation) {
        self.deprecations.insert(deprecation.deprecated_version.clone(), deprecation);
    }
    
    pub fn check_deprecation(&self, requested_version: &str) -> Option<DeprecationWarning> {
        if let Some(deprecation) = self.deprecations.get(requested_version) {
            Some(DeprecationWarning {
                message: deprecation.warning_message.clone(),
                removal_date: deprecation.removal_date,
                alternative: deprecation.alternative.clone(),
                migration_guide: deprecation.migration_guide.clone(),
                urgency: deprecation.urgency.clone(),
            })
        } else {
            None
        }
    }
    
    pub fn get_upcoming_deprecations(&self) -> Vec<&ApiDeprecation> {
        let now = Utc::now();
        self.deprecations
            .values()
            .filter(|d| d.removal_date > now)
            .collect()
    }
    
    pub fn get_expired_deprecations(&self) -> Vec<&ApiDeprecation> {
        let now = Utc::now();
        self.deprecations
            .values()
            .filter(|d| d.removal_date <= now)
            .collect()
    }
}


// Version information endpoint
pub struct VersionResolver;

#[Object]
impl VersionResolver {
    /// Get API version information
    async fn version_info(&self, ctx: &Context<'_>) -> Result<VersionInfo> {
        let version_registry = ctx.data::<VersionRegistry>()?;
        
        let supported = version_registry.list_supported_versions().into_iter().cloned().collect();
        let deprecated = version_registry.list_deprecated_versions().into_iter().cloned().collect();
        let removed = vec![]; // Would contain removed versions
        
        let mut release_notes = HashMap::new();
        release_notes.insert("v1".to_string(), ReleaseNotes {
            version: "v1".to_string(),
            release_date: DateTime::parse_from_rfc3339("2023-01-15T00:00:00Z").unwrap().with_timezone(&Utc),
            features: vec![
                "Basic authentication".to_string(),
                "Simple encryption".to_string(),
                "Basic queries".to_string(),
            ],
            bug_fixes: vec![
                "Fixed memory leak in encryption module".to_string(),
                "Improved error handling".to_string(),
            ],
            security_updates: vec![
                "Updated cryptographic libraries".to_string(),
                "Fixed authentication bypass".to_string(),
            ],
            breaking_changes: vec![],
            migration_notes: None,
        });
        
        release_notes.insert("v2".to_string(), ReleaseNotes {
            version: "v2".to_string(),
            release_date: DateTime::parse_from_rfc3339("2023-06-01T00:00:00Z").unwrap().with_timezone(&Utc),
            features: vec![
                "Enhanced authentication with MFA".to_string(),
                "Field-level encryption".to_string(),
                "Real-time subscriptions".to_string(),
                "Performance monitoring".to_string(),
            ],
            bug_fixes: vec![
                "Fixed connection pooling issues".to_string(),
                "Improved cache performance".to_string(),
            ],
            security_updates: vec![
                "Added rate limiting".to_string(),
                "Enhanced input validation".to_string(),
            ],
            breaking_changes: vec![
                BreakingChange {
                    component: "authentication".to_string(),
                    description: "JWT token format changed".to_string(),
                    migration_required: true,
                    affected_operations: vec!["login".to_string()],
                },
            ],
            migration_notes: Some("Update authentication flow to handle new token format".to_string()),
        });
        
        release_notes.insert("v3".to_string(), ReleaseNotes {
            version: "v3".to_string(),
            release_date: DateTime::parse_from_rfc3339("2024-01-01T00:00:00Z").unwrap().with_timezone(&Utc),
            features: vec![
                "Quantum-resistant cryptography".to_string(),
                "Advanced compliance reporting".to_string(),
                "ML-powered analytics".to_string(),
                "Zero-knowledge proofs".to_string(),
            ],
            bug_fixes: vec![
                "Fixed performance regression in queries".to_string(),
                "Improved memory efficiency".to_string(),
            ],
            security_updates: vec![
                "Added post-quantum encryption support".to_string(),
                "Enhanced audit logging".to_string(),
            ],
            breaking_changes: vec![
                BreakingChange {
                    component: "encryption".to_string(),
                    description: "Default algorithm changed to AEGIS256".to_string(),
                    migration_required: true,
                    affected_operations: vec!["encrypt".to_string(), "decrypt".to_string()],
                },
            ],
            migration_notes: Some("Migrate existing encrypted data to new algorithm".to_string()),
        });
        
        Ok(VersionInfo {
            current: version_registry.get_default_version().to_string(),
            supported,
            deprecated,
            removed,
            default_version: version_registry.get_default_version().to_string(),
            release_notes,
        })
    }
    
    /// Check if a specific version is supported
    async fn is_version_supported(
        &self, 
        ctx: &Context<'_>, 
        version: String
    ) -> Result<bool> {
        let version_registry = ctx.data::<VersionRegistry>()?;
        Ok(version_registry.is_supported(&version))
    }
    
    /// Get deprecation warnings for a version
    async fn deprecation_warnings(
        &self, 
        ctx: &Context<'_>, 
        version: String
    ) -> Result<Option<DeprecationWarning>> {
        let version_registry = ctx.data::<VersionRegistry>()?;
        let deprecation_manager = &version_registry.deprecation_manager;
        Ok(deprecation_manager.check_deprecation(&version))
    }
    
    /// Get upcoming deprecations
    async fn upcoming_deprecations(&self, ctx: &Context<'_>) -> Result<Vec<ApiDeprecation>> {
        let version_registry = ctx.data::<VersionRegistry>()?;
        let deprecation_manager = &version_registry.deprecation_manager;
        Ok(deprecation_manager.get_upcoming_deprecations().into_iter().cloned().collect())
    }
}

// Migration helpers
pub struct MigrationResolver;

#[Object]
impl MigrationResolver {
    /// Generate migration script from one version to another
    async fn generate_migration_script(
        &self,
        ctx: &Context<'_>,
        from_version: String,
        to_version: String
    ) -> Result<MigrationScript> {
        let version_registry = ctx.data::<VersionRegistry>()?;
        
        // Validate versions
        if !version_registry.is_supported(&to_version) {
            return Err(async_graphql::Error::new(format!("Target version {} is not supported", to_version)));
        }
        
        let script = match (from_version.as_str(), to_version.as_str()) {
            ("v1", "v2") => MigrationScript {
                from_version: from_version.clone(),
                to_version: to_version.clone(),
                steps: vec![
                    MigrationStep {
                        description: "Update user queries to include profile information".to_string(),
                        code: r#"
# Old query
query GetUser($id: ID!) {
  user(id: $id, version: "v1") {
    id
    name
    email
    createdAt
  }
}

# New query
query GetUser($id: ID!) {
  user(id: $id, version: "v2") {
    id
    name
    email
    profile {
      bio
      avatarUrl
    }
    createdAt
    updatedAt
    lastLogin
    permissions
  }
}"#.to_string(),
                        breaking_change: false,
                        estimated_duration_secs: 30,
                        verification_query: Some("query { user(id: \"test\", version: \"v2\") { id } }".to_string()),
                    },
                    MigrationStep {
                        description: "Update authentication to use enhanced JWT tokens".to_string(),
                        code: r#"
# Old authentication
mutation Login($email: String!, $password: String!) {
  login(email: $email, password: $password) {
    token
    user {
      id
      name
    }
  }
}

# New authentication
mutation Login($email: String!, $password: String!) {
  login(email: $email, password: $password) {
    token
    refreshToken
    expiresAt
    user {
      id
      name
      permissions
    }
  }
}"#.to_string(),
                        breaking_change: true,
                        estimated_duration_secs: 60,
                        verification_query: Some("mutation { login(email: \"test\", password: \"test\") { token } }".to_string()),
                    },
                ],
                estimated_time_secs: 7200,
                complexity: MigrationComplexity::Medium,
                prerequisites: vec![
                    "Backup current authentication tokens".to_string(),
                    "Update client libraries to v2".to_string(),
                ],
                rollback_available: true,
            },
            ("v2", "v3") => MigrationScript {
                from_version: from_version.clone(),
                to_version: to_version.clone(),
                steps: vec![
                    MigrationStep {
                        description: "Update encryption to use quantum-resistant algorithms".to_string(),
                        code: r#"
# Old encryption
mutation EncryptData($data: String!, $keyId: ID!) {
  encrypt(data: $data, keyId: $keyId) {
    encryptedData
            algorithm
        }
    }

# New encryption
mutation EncryptData($data: String!, $keyId: ID!) {
  encrypt(data: $data, keyId: $keyId) {
    encryptedData
            algorithm
            quantumResistant
            metadata {
                encryptionVersion
                keyDerivation
            }
        }
    }
}"#.to_string(),
                        breaking_change: true,
                        estimated_duration_secs: 45,
                        verification_query: Some("mutation { encrypt(data: \"test\", keyId: \"test\") { algorithm } }".to_string()),
                    },
                    MigrationStep {
                        description: "Enable advanced compliance features".to_string(),
                        code: r#"
# Update compliance configuration
mutation UpdateComplianceConfig {
  updateComplianceConfig(config: {
    framework: "gdpr"
    advancedFeatures: true
    quantumResistant: true
  }) {
    success
        message
    }
}"#.to_string(),
                        breaking_change: false,
                        estimated_duration_secs: 15,
                        verification_query: Some("query { complianceConfig { framework } }".to_string()),
                    },
                ],
                estimated_time_secs: 14400,
                complexity: MigrationComplexity::High,
                prerequisites: vec![
                    "Generate new quantum-resistant keys".to_string(),
                    "Update compliance documentation".to_string(),
                    "Test migration in staging environment".to_string(),
                ],
                rollback_available: true,
            },
            _ => return Err(async_graphql::Error::new("Migration path not supported")),
        };
        
        Ok(script)
    }
    
    /// Validate migration readiness
    async fn validate_migration_readiness(
        &self,
        ctx: &Context<'_>,
        from_version: String,
        to_version: String
    ) -> Result<MigrationReadiness> {
        let version_registry = ctx.data::<VersionRegistry>()?;
        
        // Check if migration path exists
        let migration_path = version_registry.get_migration_path(&from_version, &to_version)
            .ok_or_else(|| async_graphql::Error::new("No migration path available"))?;
        
        // Perform readiness checks
        let checks = vec![
            ReadinessCheck {
                name: "Version compatibility".to_string(),
                status: CheckStatus::Pass,
                message: "Source and target versions are compatible".to_string(),
            },
            ReadinessCheck {
                name: "Backup availability".to_string(),
                status: CheckStatus::Warning,
                message: "Ensure recent backup is available before migration".to_string(),
            },
            ReadinessCheck {
                name: "Client compatibility".to_string(),
                status: CheckStatus::Pass,
                message: "Client libraries support target version".to_string(),
            },
            ReadinessCheck {
                name: "Resource availability".to_string(),
                status: CheckStatus::Pass,
                message: "Sufficient resources available for migration".to_string(),
            },
        ];
        
        let estimated_downtime = std::time::Duration::from_secs(900);
        
        Ok(MigrationReadiness {
            ready: checks.iter().all(|c| matches!(c.status, CheckStatus::Pass)),
            migration_path,
            checks,
            estimated_downtime_secs: estimated_downtime.as_secs(),
            recommended_maintenance_window: Some("Weekend 2-4 AM".to_string()),
        })
    }
}

#[derive(SimpleObject)]
pub struct MigrationReadiness {
    pub ready: bool,
    pub migration_path: Vec<String>,
    pub checks: Vec<ReadinessCheck>,
    pub estimated_downtime_secs: u64,
    pub recommended_maintenance_window: Option<String>,
}


#[derive(SimpleObject, Clone)]
pub struct ReadinessCheck {
    pub name: String,
    pub status: CheckStatus,
    pub message: String,
}

async fn fetch_user_v1(_id: &str) -> Result<UserV1> {
    Ok(UserV1 {
        id: "user_123".to_string(),
        name: "John Doe".to_string(),
        email: "john@example.com".to_string(),
        created_at: Utc::now(),
    })
}

async fn fetch_user_v2(_id: &str) -> Result<UserV2> {
    Ok(UserV2 {
        id: "user_123".to_string(),
        name: "John Doe".to_string(),
        email: "john@example.com".to_string(),
        profile: UserProfile {
            bio: Some("Software Developer".to_string()),
            avatar_url: Some("https://example.com/avatar.jpg".to_string()),
            preferences: serde_json::json!({"theme": "dark"}),
        },
        created_at: Utc::now(),
        updated_at: Utc::now(),
        last_login: Some(Utc::now()),
        permissions: vec!["read".to_string(), "write".to_string()],
    })
}

async fn fetch_user_v3(_id: &str) -> Result<UserV3> {
    Ok(UserV3 {
        id: "user_123".to_string(),
        name: "John Doe".to_string(),
        email: "john@example.com".to_string(),
        profile: UserProfileV3 {
            bio: Some("Software Developer".to_string()),
            avatar_url: Some("https://example.com/avatar.jpg".to_string()),
            preferences: serde_json::json!({"theme": "dark"}),
            privacy_settings: PrivacySettings {
                profile_visibility: "public".to_string(),
                data_sharing: false,
                analytics_opt_out: true,
            },
            notification_settings: NotificationSettings {
                email_notifications: true,
                push_notifications: false,
                security_alerts: true,
            },
        },
        created_at: Utc::now(),
        updated_at: Utc::now(),
        last_login: Some(Utc::now()),
        permissions: vec!["read".to_string(), "write".to_string(), "admin".to_string()],
        security_context: SecurityContext {
            mfa_enabled: true,
            last_password_change: Utc::now(),
            failed_login_attempts: 0,
            device_trust_score: 0.95,
        },
        compliance_flags: ComplianceFlags {
            gdpr_compliant: true,
            data_retention_days: 365,
            audit_required: true,
            classification: "confidential".to_string(),
        },
    })
}

async fn fetch_users_v1(_status: Option<String>) -> Result<Vec<UserV1>> {
    Ok(vec![
        UserV1 {
            id: "user_123".to_string(),
            name: "John Doe".to_string(),
            email: "john@example.com".to_string(),
            created_at: Utc::now(),
        }
    ])
}

async fn fetch_users_v2(_status: Option<String>) -> Result<Vec<UserV2>> {
    Ok(vec![
        UserV2 {
            id: "user_123".to_string(),
            name: "John Doe".to_string(),
            email: "john@example.com".to_string(),
            profile: UserProfile {
                bio: Some("Software Developer".to_string()),
                avatar_url: Some("https://example.com/avatar.jpg".to_string()),
                preferences: serde_json::json!({"theme": "dark"}),
            },
            created_at: Utc::now(),
            updated_at: Utc::now(),
            last_login: Some(Utc::now()),
            permissions: vec!["read".to_string(), "write".to_string()],
        }
    ])
}

async fn fetch_users_v3(_status: Option<String>) -> Result<Vec<UserV3>> {
    Ok(vec![
        UserV3 {
            id: "user_123".to_string(),
            name: "John Doe".to_string(),
            email: "john@example.com".to_string(),
            profile: UserProfileV3 {
                bio: Some("Software Developer".to_string()),
                avatar_url: Some("https://example.com/avatar.jpg".to_string()),
                preferences: serde_json::json!({"theme": "dark"}),
                privacy_settings: PrivacySettings {
                    profile_visibility: "public".to_string(),
                    data_sharing: false,
                    analytics_opt_out: true,
                },
                notification_settings: NotificationSettings {
                    email_notifications: true,
                    push_notifications: false,
                    security_alerts: true,
                },
            },
            created_at: Utc::now(),
            updated_at: Utc::now(),
            last_login: Some(Utc::now()),
            permissions: vec!["read".to_string(), "write".to_string(), "admin".to_string()],
            security_context: SecurityContext {
                mfa_enabled: true,
                last_password_change: Utc::now(),
                failed_login_attempts: 0,
                device_trust_score: 0.95,
            },
            compliance_flags: ComplianceFlags {
                gdpr_compliant: true,
                data_retention_days: 365,
                audit_required: true,
                classification: "confidential".to_string(),
            },
        }
    ])
}