package server

import (
	"net/http"
	"os"
	"path/filepath"
	"strings"
)

// handleStatic serves static files from Odoo addon directories.
// URL pattern: /<addon_name>/static/<path>
// Maps to: <addons_path>/<addon_name>/static/<path>
func (s *Server) handleStatic(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodGet && r.Method != http.MethodHead {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	path := strings.TrimPrefix(r.URL.Path, "/")
	parts := strings.SplitN(path, "/", 3)
	if len(parts) < 3 || parts[1] != "static" {
		http.NotFound(w, r)
		return
	}

	addonName := parts[0]
	filePath := parts[2]

	// Security: prevent directory traversal
	if strings.Contains(filePath, "..") {
		http.NotFound(w, r)
		return
	}

	// For JS/CSS files: check build dir first (transpiled/compiled files)
	if s.config.BuildDir != "" && (strings.HasSuffix(filePath, ".js") || strings.HasSuffix(filePath, ".css")) {
		buildPath := filepath.Join(s.config.BuildDir, addonName, "static", filePath)
		if _, err := os.Stat(buildPath); err == nil {
			w.Header().Set("Cache-Control", "public, max-age=3600")
			http.ServeFile(w, r, buildPath)
			return
		}
	}

	// Search through addon paths (original files)
	for _, addonsDir := range s.config.OdooAddonsPath {
		fullPath := filepath.Join(addonsDir, addonName, "static", filePath)
		if _, err := os.Stat(fullPath); err == nil {
			w.Header().Set("Cache-Control", "public, max-age=3600")

			// Serve SCSS as compiled CSS if available
			if strings.HasSuffix(fullPath, ".scss") && s.config.BuildDir != "" {
				buildCSS := filepath.Join(s.config.BuildDir, addonName, "static", strings.TrimSuffix(filePath, ".scss")+".css")
				if _, err := os.Stat(buildCSS); err == nil {
					fullPath = buildCSS
				}
			}

			http.ServeFile(w, r, fullPath)
			return
		}
	}

	http.NotFound(w, r)
}