package handlers

import (
	"net/http"

	"git.linuxforward.com/byop/byop-engine/models"
	"github.com/gin-gonic/gin"
)

// DeploymentHandler handles deployment-related operations
type DeploymentHandler struct {
	// Add any dependencies needed for deployment operations
}

// NewDeploymentHandler creates a new DeploymentHandler
func NewDeploymentHandler() *DeploymentHandler {
	return &DeploymentHandler{}
}

// RegisterRoutes registers routes for deployment operations
func (h *DeploymentHandler) RegisterRoutes(r *gin.RouterGroup) {
	r.GET("/", h.ListDeployments)
	r.POST("/", h.CreateDeployment)
	r.GET("/:id", h.GetDeployment)
	r.PUT("/:id", h.UpdateDeployment)
	r.DELETE("/:id", h.DeleteDeployment)
	r.POST("/:id/start", h.StartDeployment)
	r.POST("/:id/stop", h.StopDeployment)
	r.POST("/:id/restart", h.RestartDeployment)
	r.GET("/:id/logs", h.GetDeploymentLogs)
	r.GET("/:id/metrics", h.GetDeploymentMetrics)
	r.POST("/:id/scale", h.ScaleDeployment)
}

// ListDeployments returns all deployments
func (h *DeploymentHandler) ListDeployments(c *gin.Context) {
	// TODO: Fetch deployments from database
	deployments := []models.Deployment{}

	c.JSON(http.StatusOK, deployments)
}

// CreateDeployment creates a new deployment
func (h *DeploymentHandler) CreateDeployment(c *gin.Context) {
	var deployment models.Deployment

	if err := c.ShouldBindJSON(&deployment); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request body"})
		return
	}

	// TODO: Save deployment to database

	c.JSON(http.StatusCreated, deployment)
}

// GetDeployment returns a specific deployment
func (h *DeploymentHandler) GetDeployment(c *gin.Context) {
	id := c.Param("id")
	if id == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Missing deployment ID"})
		return
	}

	// TODO: Fetch deployment from database
	deployment := models.Deployment{ID: id}

	c.JSON(http.StatusOK, deployment)
}

// UpdateDeployment updates a deployment
func (h *DeploymentHandler) UpdateDeployment(c *gin.Context) {
	id := c.Param("id")
	if id == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Missing deployment ID"})
		return
	}

	var deployment models.Deployment
	if err := c.ShouldBindJSON(&deployment); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request body"})
		return
	}

	deployment.ID = id
	// TODO: Update deployment in database

	c.JSON(http.StatusOK, deployment)
}

// DeleteDeployment deletes a deployment
func (h *DeploymentHandler) DeleteDeployment(c *gin.Context) {
	// TODO: Delete deployment from database

	c.Status(http.StatusNoContent)
}

// StartDeployment starts a deployment
func (h *DeploymentHandler) StartDeployment(c *gin.Context) {
	id := c.Param("id")
	if id == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Missing deployment ID"})
		return
	}

	// TODO: Start deployment
	result := map[string]string{"status": "started", "id": id}

	c.JSON(http.StatusOK, result)
}

// StopDeployment stops a deployment
func (h *DeploymentHandler) StopDeployment(c *gin.Context) {
	id := c.Param("id")
	if id == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Missing deployment ID"})
		return
	}

	// TODO: Stop deployment
	result := map[string]string{"status": "stopped", "id": id}

	c.JSON(http.StatusOK, result)
}

// RestartDeployment restarts a deployment
func (h *DeploymentHandler) RestartDeployment(c *gin.Context) {
	id := c.Param("id")
	if id == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Missing deployment ID"})
		return
	}

	// TODO: Restart deployment
	result := map[string]string{"status": "restarted", "id": id}

	c.JSON(http.StatusOK, result)
}

// GetDeploymentLogs returns logs for a deployment
func (h *DeploymentHandler) GetDeploymentLogs(c *gin.Context) {
	// TODO: Fetch deployment logs
	logs := []string{"Log entry 1", "Log entry 2"}

	c.JSON(http.StatusOK, logs)
}

// GetDeploymentMetrics returns metrics for a deployment
func (h *DeploymentHandler) GetDeploymentMetrics(c *gin.Context) {
	// TODO: Fetch deployment metrics
	metrics := []models.MetricSample{}

	c.JSON(http.StatusOK, metrics)
}

// ScaleDeployment scales a deployment
func (h *DeploymentHandler) ScaleDeployment(c *gin.Context) {
	id := c.Param("id")
	if id == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Missing deployment ID"})
		return
	}

	var scaleRequest struct {
		Replicas int `json:"replicas"`
	}

	if err := c.ShouldBindJSON(&scaleRequest); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request body"})
		return
	}

	// TODO: Scale deployment
	result := map[string]interface{}{
		"id":       id,
		"replicas": scaleRequest.Replicas,
		"status":   "scaling",
	}

	c.JSON(http.StatusOK, result)
}
