package shadow_ai

import (
	"context"
	"fmt"
	"log/slog"
	"time"
)

// --- Vendor Plugin Stubs ---
// Reference implementations for major security vendors.
// These stubs implement the full interface with logging but no real API calls.
// Production deployments replace these with real vendor SDK integrations.

// CheckPointEnforcer is a stub implementation for Check Point firewalls.
type CheckPointEnforcer struct {
	apiURL   string
	apiKey   string
	logger   *slog.Logger
}

func NewCheckPointEnforcer() *CheckPointEnforcer {
	return &CheckPointEnforcer{
		logger: slog.Default().With("component", "shadow-ai-plugin-checkpoint"),
	}
}

func (c *CheckPointEnforcer) Initialize(config map[string]interface{}) error {
	if url, ok := config["api_url"].(string); ok {
		c.apiURL = url
	}
	if key, ok := config["api_key"].(string); ok {
		c.apiKey = key
	}
	if c.apiURL == "" {
		return fmt.Errorf("checkpoint: api_url required")
	}
	c.logger.Info("initialized", "api_url", c.apiURL)
	return nil
}

func (c *CheckPointEnforcer) BlockIP(_ context.Context, ip string, duration time.Duration, reason string) error {
	c.logger.Info("block IP", "ip", ip, "duration", duration, "reason", reason)
	// Stub: would call Check Point Management API POST /web_api/add-host
	return nil
}

func (c *CheckPointEnforcer) BlockDomain(_ context.Context, domain string, reason string) error {
	c.logger.Info("block domain", "domain", domain, "reason", reason)
	// Stub: would create application-site-category block rule
	return nil
}

func (c *CheckPointEnforcer) UnblockIP(_ context.Context, ip string) error {
	c.logger.Info("unblock IP", "ip", ip)
	return nil
}

func (c *CheckPointEnforcer) UnblockDomain(_ context.Context, domain string) error {
	c.logger.Info("unblock domain", "domain", domain)
	return nil
}

func (c *CheckPointEnforcer) HealthCheck(ctx context.Context) error {
	if c.apiURL == "" {
		return fmt.Errorf("not configured")
	}
	// Stub: would call GET /web_api/show-session
	return nil
}

func (c *CheckPointEnforcer) Vendor() string { return "checkpoint" }

// CrowdStrikeController is a stub implementation for CrowdStrike Falcon EDR.
type CrowdStrikeController struct {
	clientID     string
	clientSecret string
	baseURL      string
	logger       *slog.Logger
}

func NewCrowdStrikeController() *CrowdStrikeController {
	return &CrowdStrikeController{
		baseURL: "https://api.crowdstrike.com",
		logger:  slog.Default().With("component", "shadow-ai-plugin-crowdstrike"),
	}
}

func (cs *CrowdStrikeController) Initialize(config map[string]interface{}) error {
	if id, ok := config["client_id"].(string); ok {
		cs.clientID = id
	}
	if secret, ok := config["client_secret"].(string); ok {
		cs.clientSecret = secret
	}
	if url, ok := config["base_url"].(string); ok {
		cs.baseURL = url
	}
	if cs.clientID == "" {
		return fmt.Errorf("crowdstrike: client_id required")
	}
	cs.logger.Info("initialized", "base_url", cs.baseURL)
	return nil
}

func (cs *CrowdStrikeController) IsolateHost(_ context.Context, hostname string) error {
	cs.logger.Info("isolate host", "hostname", hostname)
	// Stub: would call POST /devices/entities/devices-actions/v2?action_name=contain
	return nil
}

func (cs *CrowdStrikeController) ReleaseHost(_ context.Context, hostname string) error {
	cs.logger.Info("release host", "hostname", hostname)
	// Stub: would call POST /devices/entities/devices-actions/v2?action_name=lift_containment
	return nil
}

func (cs *CrowdStrikeController) KillProcess(_ context.Context, hostname string, pid int) error {
	cs.logger.Info("kill process", "hostname", hostname, "pid", pid)
	// Stub: would use RTR session to kill process
	return nil
}

func (cs *CrowdStrikeController) QuarantineFile(_ context.Context, hostname, path string) error {
	cs.logger.Info("quarantine file", "hostname", hostname, "path", path)
	return nil
}

func (cs *CrowdStrikeController) HealthCheck(ctx context.Context) error {
	if cs.clientID == "" {
		return fmt.Errorf("not configured")
	}
	// Stub: would call GET /sensors/queries/sensors/v1?limit=1
	return nil
}

func (cs *CrowdStrikeController) Vendor() string { return "crowdstrike" }

// ZscalerGateway is a stub implementation for Zscaler Internet Access.
type ZscalerGateway struct {
	cloudName string
	apiKey    string
	username  string
	password  string
	logger    *slog.Logger
}

func NewZscalerGateway() *ZscalerGateway {
	return &ZscalerGateway{
		logger: slog.Default().With("component", "shadow-ai-plugin-zscaler"),
	}
}

func (z *ZscalerGateway) Initialize(config map[string]interface{}) error {
	if cloud, ok := config["cloud_name"].(string); ok {
		z.cloudName = cloud
	}
	if key, ok := config["api_key"].(string); ok {
		z.apiKey = key
	}
	if user, ok := config["username"].(string); ok {
		z.username = user
	}
	if pass, ok := config["password"].(string); ok {
		z.password = pass
	}
	if z.cloudName == "" {
		return fmt.Errorf("zscaler: cloud_name required")
	}
	z.logger.Info("initialized", "cloud", z.cloudName)
	return nil
}

func (z *ZscalerGateway) BlockURL(_ context.Context, url, reason string) error {
	z.logger.Info("block URL", "url", url, "reason", reason)
	// Stub: would call PUT /webApplicationRules to add URL to block list
	return nil
}

func (z *ZscalerGateway) UnblockURL(_ context.Context, url string) error {
	z.logger.Info("unblock URL", "url", url)
	return nil
}

func (z *ZscalerGateway) BlockCategory(_ context.Context, category string) error {
	z.logger.Info("block category", "category", category)
	// Stub: would update URL category policy to BLOCK
	return nil
}

func (z *ZscalerGateway) HealthCheck(ctx context.Context) error {
	if z.cloudName == "" {
		return fmt.Errorf("not configured")
	}
	// Stub: would call GET /status
	return nil
}

func (z *ZscalerGateway) Vendor() string { return "zscaler" }

// RegisterDefaultPlugins registers all built-in vendor plugin factories.
func RegisterDefaultPlugins(registry *PluginRegistry) {
	registry.RegisterFactory(PluginTypeFirewall, "checkpoint", func() interface{} {
		return NewCheckPointEnforcer()
	})
	registry.RegisterFactory(PluginTypeEDR, "crowdstrike", func() interface{} {
		return NewCrowdStrikeController()
	})
	registry.RegisterFactory(PluginTypeProxy, "zscaler", func() interface{} {
		return NewZscalerGateway()
	})
}