package controllers

import (
	"lokideploy/dto"
	"lokideploy/models"
	"lokideploy/pkg/crypto"
	"lokideploy/services"
	"lokideploy/utils"

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

type HostController struct {
	service *services.HostService
}

func NewHostController() *HostController {
	return &HostController{service: services.NewHostService()}
}

func (ctrl *HostController) Create(c *gin.Context) {
	var req dto.CreateHostRequest
	if !utils.BindAndValidate(c, &req) {
		return
	}
	host, err := ctrl.service.Create(req.Name, req.HostIP, req.Port, req.User, req.AuthType,
		req.Password, req.PrivateKey, req.KeyPhrase, req.OS, req.Arch, req.Labels)
	if err != nil {
		utils.Error(c, 400, err.Error())
		return
	}
	utils.Success(c, models.SanitizedJSON(host))
}

func (ctrl *HostController) Get(c *gin.Context) {
	id, err := utils.IntParam(c, "id")
	if err != nil {
		utils.BadRequest(c, "ID 无效")
		return
	}
	host, err := ctrl.service.Get(uint(id))
	if err != nil {
		utils.NotFound(c, "主机不存在")
		return
	}
	utils.Success(c, models.SanitizedJSON(host))
}

func (ctrl *HostController) List(c *gin.Context) {
	page, pageSize := utils.Pagination(c)
	hosts, total, err := ctrl.service.List(page, pageSize)
	if err != nil {
		utils.Error(c, 500, err.Error())
		return
	}
	utils.Success(c, utils.PageData{
		List:  models.SanitizedJSON(hosts),
		Total: total, Page: page, PageSize: pageSize,
	})
}

func (ctrl *HostController) Update(c *gin.Context) {
	id, err := utils.IntParam(c, "id")
	if err != nil {
		utils.BadRequest(c, "ID 无效")
		return
	}
	var updates map[string]interface{}
	if !utils.BindAndValidate(c, &updates) {
		return
	}
	if err := ctrl.service.Update(uint(id), updates); err != nil {
		utils.Error(c, 400, err.Error())
		return
	}
	utils.Success(c, gin.H{"message": "updated"})
}

func (ctrl *HostController) Delete(c *gin.Context) {
	id, err := utils.IntParam(c, "id")
	if err != nil {
		utils.BadRequest(c, "ID 无效")
		return
	}
	if err := ctrl.service.Delete(uint(id)); err != nil {
		utils.Error(c, 400, err.Error())
		return
	}
	utils.Success(c, gin.H{"message": "deleted"})
}

func (ctrl *HostController) Validate(c *gin.Context) {
	id, err := utils.IntParam(c, "id")
	if err != nil {
		utils.BadRequest(c, "ID 无效")
		return
	}
	go ctrl.service.Validate(uint(id))
	utils.Success(c, gin.H{"message": "validation started"})
}

func (ctrl *HostController) GetInfo(c *gin.Context) {
	id, err := utils.IntParam(c, "id")
	if err != nil {
		utils.BadRequest(c, "ID 无效")
		return
	}
	host, err := ctrl.service.Get(uint(id))
	if err != nil {
		utils.NotFound(c, "主机不存在")
		return
	}

	password := host.Password
	if len(password) > 4 && password[:4] == "ENC:" {
		password, _ = crypto.Decrypt(password[4:])
	}

	client, err := services.NewSSHClient(host.HostIP, host.Port, host.User, password)
	if err != nil {
		utils.Error(c, 500, err.Error())
		return
	}
	defer client.Close()

	info, err := client.GetHostInfo(c.Request.Context())
	if err != nil {
		utils.Error(c, 500, err.Error())
		return
	}
	utils.Success(c, info)
}

func (ctrl *HostController) Execute(c *gin.Context) {
	id, err := utils.IntParam(c, "id")
	if err != nil {
		utils.BadRequest(c, "ID 无效")
		return
	}
	var req struct {
		Command string `json:"command" binding:"required"`
	}
	if !utils.BindAndValidate(c, &req) {
		return
	}
	stdout, stderr, err := ctrl.service.ExecuteCommand(uint(id), req.Command)
	if err != nil {
		utils.Error(c, 500, err.Error())
		return
	}
	utils.Success(c, gin.H{"stdout": stdout, "stderr": stderr})
}