package api

import (
	"encoding/json"
	"net/http"
	"strings"

	"github.com/muyue/muyue/internal/agent"
	"github.com/muyue/muyue/internal/config"
	"github.com/muyue/muyue/internal/scanner"
	"github.com/muyue/muyue/internal/workflow"
)

type Server struct {
	config         *config.MuyueConfig
	scanResult     *scanner.ScanResult
	mux            *http.ServeMux
	convStore      *ConversationStore
	agentRegistry  *agent.Registry
	agentToolsJSON json.RawMessage
	workflowEngine *workflow.Engine
}

func NewServer(cfg *config.MuyueConfig) *Server {
	s := &Server{
		config: cfg,
		mux:    http.NewServeMux(),
	}
	s.scanResult = scanner.ScanSystem()
	s.convStore = NewConversationStore()
	s.agentRegistry = agent.DefaultRegistry()
	tools := s.agentRegistry.OpenAITools()
	toolsJSON, _ := json.Marshal(tools)
	s.agentToolsJSON = json.RawMessage(toolsJSON)
	s.workflowEngine, _ = workflow.NewEngine(s.agentRegistry)
	s.routes()
	return s
}

func (s *Server) routes() {
	s.mux.HandleFunc("/api/info", s.handleInfo)
	s.mux.HandleFunc("/api/system", s.handleSystem)
	s.mux.HandleFunc("/api/tools", s.handleTools)
	s.mux.HandleFunc("/api/config", s.handleConfig)
	s.mux.HandleFunc("/api/providers", s.handleProviders)
	s.mux.HandleFunc("/api/skills", s.handleSkills)
	s.mux.HandleFunc("/api/lsp", s.handleLSP)
	s.mux.HandleFunc("/api/mcp", s.handleMCP)
	s.mux.HandleFunc("/api/updates", s.handleUpdates)
	s.mux.HandleFunc("/api/install", s.handleInstall)
	s.mux.HandleFunc("/api/scan", s.handleScan)
	s.mux.HandleFunc("/api/editors", s.handleEditors)
	s.mux.HandleFunc("/api/preferences", s.handleUpdatePreferences)
	s.mux.HandleFunc("/api/terminal", s.handleTerminal)
	s.mux.HandleFunc("/api/ws/terminal", s.handleTerminalWS)
	s.mux.HandleFunc("/api/terminal/sessions", s.handleTerminalSessions)
	s.mux.HandleFunc("/api/terminal/sessions/", s.handleTerminalSessionsDelete)
	s.mux.HandleFunc("/api/terminal/themes", s.handleGetTerminalThemes)
	s.mux.HandleFunc("/api/terminal/settings", s.handleSaveTerminalSettings)
	s.mux.HandleFunc("/api/mcp/configure", s.handleMCPConfigure)
	s.mux.HandleFunc("/api/config/profile", s.handleSaveProfile)
	s.mux.HandleFunc("/api/config/provider", s.handleSaveProvider)
	s.mux.HandleFunc("/api/config/reset", s.handleResetConfig)
	s.mux.HandleFunc("/api/starship/apply-theme", s.handleApplyStarshipTheme)
	s.mux.HandleFunc("/api/providers/validate", s.handleValidateProvider)
	s.mux.HandleFunc("/api/update/run", s.handleRunUpdate)
	s.mux.HandleFunc("/api/chat", s.handleChat)
	s.mux.HandleFunc("/api/chat/history", s.handleChatHistory)
	s.mux.HandleFunc("/api/chat/clear", s.handleChatClear)
	s.mux.HandleFunc("/api/tool/call", s.handleToolCall)
	s.mux.HandleFunc("/api/tools/list", s.handleToolList)
	s.mux.HandleFunc("/api/shell/chat", s.handleShellChat)
	s.mux.HandleFunc("/api/workflow", s.handleWorkflowCreate)
	s.mux.HandleFunc("/api/workflow/list", s.handleWorkflowList)
	s.mux.HandleFunc("/api/workflow/", s.handleWorkflowGet)
	s.mux.HandleFunc("/api/workflow/plan", s.handleWorkflowPlan)
	s.mux.HandleFunc("/api/workflow/execute/", s.handleWorkflowExecute)
	s.mux.HandleFunc("/api/workflow/approve/", s.handleWorkflowApprove)
	s.mux.HandleFunc("/api/conversations", s.handleListConversations)
	s.mux.HandleFunc("/api/conversations/search", s.handleSearchConversations)
	s.mux.HandleFunc("/api/conversations/export", s.handleExportConversation)
	s.mux.HandleFunc("/api/conversations/", s.handleDeleteConversation)
	s.mux.HandleFunc("/api/lsp/install", s.handleLSPInstall)
	s.mux.HandleFunc("/api/skills/deploy", s.handleSkillsDeploy)
	s.mux.HandleFunc("/api/ssh/connections", s.handleSSHConnections)
	s.mux.HandleFunc("/api/ssh/test", s.handleSSHTest)

	s.mux.HandleFunc("/api/mcp/status", s.handleMCPStatus)
	s.mux.HandleFunc("/api/mcp/registry", s.handleMCPRegistry)
	s.mux.HandleFunc("/api/lsp/health", s.handleLSPHealth)
	s.mux.HandleFunc("/api/lsp/auto-install", s.handleLSPAutoInstall)
	s.mux.HandleFunc("/api/lsp/editor-config", s.handleLSPEditorConfig)
	s.mux.HandleFunc("/api/skills/validate", s.handleSkillValidate)
	s.mux.HandleFunc("/api/skills/test", s.handleSkillTest)
	s.mux.HandleFunc("/api/skills/export", s.handleSkillExport)
	s.mux.HandleFunc("/api/skills/import", s.handleSkillImport)
	s.mux.HandleFunc("/api/dashboard/status", s.handleDashboardStatus)
}

func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	if strings.HasPrefix(r.URL.Path, "/api/ws/") {
		s.mux.ServeHTTP(w, r)
		return
	}
	w.Header().Set("Content-Type", "application/json")
	w.Header().Set("Access-Control-Allow-Origin", "*")
	w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, OPTIONS")
	w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
	if r.Method == "OPTIONS" {
		w.WriteHeader(http.StatusOK)
		return
	}
	s.mux.ServeHTTP(w, r)
}