package server

import (
	"net/http"
	"strings"

	"github.com/gin-gonic/gin"
)

func (s *Server) health(c *gin.Context) {
	ok(c, gin.H{"status": "ok"})
}

func (s *Server) config(c *gin.Context) {
	ok(c, gin.H{
		"model":                 s.cfg.Model,
		"base_url":              s.cfg.BaseURL,
		"workspace":             s.cfg.Workspace,
		"max_context_tokens":    s.cfg.MaxContextTokens,
		"max_tool_result_chars": s.cfg.MaxToolResultChars,
		"max_iterations":        s.cfg.MaxIterations,
		"keep_recent_messages":  s.cfg.KeepRecentMessages,
		"api_key_configured":    s.cfg.APIKey != "",
	})
}

func (s *Server) dockerConfig(c *gin.Context) {
	ok(c, gin.H{
		"docker_socket":  s.dockerCfg.Socket(),
		"default_socket": s.dockerCfg.DefaultSocket(),
		"configured":     s.dockerCfg.IsConfigured(),
	})
}

func (s *Server) setDockerConfig(c *gin.Context) {
	var req struct {
		Socket string `json:"socket"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		fail(c, http.StatusBadRequest, "请求体格式错误")
		return
	}
	req.Socket = strings.TrimSpace(req.Socket)
	// 空字符串表示清除配置、恢复默认本地 Docker
	if err := s.dockerCfg.SetSocket(req.Socket); err != nil {
		fail(c, http.StatusInternalServerError, "保存 Docker 配置失败: "+err.Error())
		return
	}
	ok(c, gin.H{
		"docker_socket":  s.dockerCfg.Socket(),
		"default_socket": s.dockerCfg.DefaultSocket(),
		"configured":     s.dockerCfg.IsConfigured(),
	})
}

func (s *Server) llmConfig(c *gin.Context) {
	apiKey := s.apiCfg.APIKey()
	ok(c, gin.H{
		"provider":           s.apiCfg.Provider(),
		"api_key_configured": apiKey != "",
		"api_key_masked":     maskSecret(apiKey),
		"base_url":           s.apiCfg.BaseURL(),
		"model":              s.apiCfg.Model(),
		"engine":             s.apiCfg.Engine(),
		"coop_mode":          s.apiCfg.CoopMode(),
		"default_base_url":   s.cfg.BaseURL,
		"default_model":      s.cfg.Model,
	})
}

func (s *Server) setLLMConfig(c *gin.Context) {
	var req struct {
		APIKey   *string `json:"api_key"`
		BaseURL  *string `json:"base_url"`
		Model    *string `json:"model"`
		Provider *string `json:"provider"`
		Engine   *string `json:"engine"`
		CoopMode *string `json:"coop_mode"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		fail(c, http.StatusBadRequest, "请求体格式错误")
		return
	}
	// 字段为 nil 表示不修改；空字符串表示清除该字段、回退默认
	if err := s.apiCfg.Update(req.APIKey, req.BaseURL, req.Model, req.Provider, req.Engine, req.CoopMode); err != nil {
		fail(c, http.StatusInternalServerError, "保存 LLM 配置失败: "+err.Error())
		return
	}
	apiKey := s.apiCfg.APIKey()
	ok(c, gin.H{
		"provider":           s.apiCfg.Provider(),
		"api_key_configured": apiKey != "",
		"api_key_masked":     maskSecret(apiKey),
		"base_url":           s.apiCfg.BaseURL(),
		"model":              s.apiCfg.Model(),
		"engine":             s.apiCfg.Engine(),
		"coop_mode":          s.apiCfg.CoopMode(),
	})
}

// maskSecret 对密钥做掩码展示，避免在 Web 页面泄露完整值。
func maskSecret(value string) string {
	runes := []rune(value)
	if len(runes) <= 6 {
		if len(runes) == 0 {
			return ""
		}
		return "****"
	}
	return string(runes[:3]) + "****" + string(runes[len(runes)-3:])
}