package back

import (
	"bufio"
	"html/template"
	"image"
	"image/jpeg"
	"mime/multipart"
	"os"
	"strconv"
	"strings"

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

func prepareRouterMaterial() {
	router.POST("/material-insert/:category", handlerInsertMaterial)
	router.POST("/material-update/:category", handlerUpdateMaterial)
	router.POST("/material-delete/:link", handlerDeleteMaterial)
	router.POST("/material-restore/:link", handlerRestoreMaterial)
	router.POST("/material-select-limit/:category", handlerSelectLimitMaterial)
	router.POST("/material-search", handlerMaterialSearch)
	router.POST("/material-get-source/:link", handlerMaterialGetSource)

	router.POST("/material-get", handlerMaterialGet)
}

func handlerMaterial(c *gin.Context) {
	m := material{}
	h := gin.H{}

	m.Link = c.Param("link")

	isAvailableMaterial := true

	e := m.SelectOne()
	if e != nil {
		if strings.Contains(e.Error(), "no rows") {
			h["OtherPage"] = "404"
			isAvailableMaterial = false
		}
	}

	h["Page"] = m

	if m.Active == false {
		h["OtherPage"] = "404"
		isAvailableMaterial = false
	} else {
		if isAvailableMaterial {
			if m.Category != c.Param("category") {
				c.Redirect(302, Setting.ServerDomain+"/данные/"+m.Category+"/"+m.Link)
				return
			}
		}
	}

	isAdmin := false
	isLogin := false
	isSecreter := false

	role := getRoleFromContext(c)
	if len(role) != 0 {

		if role == "__admin" {

			isAdmin = true

			isAvailableMaterial = true
		} else if role == "_secretary" {
			isSecreter = true
		}

		isLogin = true
	}

	h["IsMain"] = false
	h["IsLogin"] = isLogin
	h["IsAdmin"] = isAdmin
	h["isSecreter"] = isSecreter
	if isAdmin {
		h["Menu"] = templateMenuAll
		h["MenuTop"] = templateMenuAllTop
	} else {
		h["Menu"] = templateMenu
		h["MenuTop"] = templateMenuTop
	}
	h["AvailableMaterial"] = isAvailableMaterial

	h["ServerVersion"] = Setting.ServerVersion

	c.HTML(200, "index.html", h)
}

func handlerMaterialSearch(c *gin.Context) {
	s := search{}

	e := c.BindJSON(&s)
	if e != nil {
		logger.Println("ERROR", e)
		c.JSON(200, gin.H{
			"Error": nil,
			"Data":  nil,
		})
		return
	}

	m := material{}
	e = m.Search(s.Phrase)
	if e != nil {
		logger.Println("ERROR", e)
		c.JSON(200, gin.H{
			"Error": nil,
			"Data":  nil,
		})
		return
	}

	c.JSON(200, gin.H{
		"Error": nil,
		"Data":  m.Rows,
	})
}

func handlerInsertMaterial(c *gin.Context) {
	man := getManagerFromContext(c)

	if man.Role != "__admin" {
		c.JSON(200, gin.H{
			"Error": errorAccessRestricted,
		})
		return
	}

	form, e := c.MultipartForm()
	if e != nil {
		logger.Println("ERROR", e)

		c.JSON(200, gin.H{
			"Error": errorBadRequestData,
		})
		return
	}

	m := material{}

	m.Category = c.Param("category")

	m.Author = man.ID
	m.Caption = form.Value["Caption"][0]
	m.Source = form.Value["Source"][0]
	m.SourceImages = form.Value["SourceImages"][0]
	m.Link = form.Value["Link"][0]
	m.Content = template.HTML(form.Value["Content"][0])
	m.Preview.Valid, _ = strconv.ParseBool(form.Value["PreviewValid"][0])
	if m.Preview.Valid {
		m.Preview.String = form.Value["PreviewString"][0]
	}
	m.Image.Valid, _ = strconv.ParseBool(form.Value["ImageValid"][0])
	if m.Image.Valid {
		m.Image.String = form.Value["ImageString"][0]
	}

	imagePath := Setting.Data + form.Value["ImagePath"][0]
	thumbPath := Setting.Data + form.Value["ThumbPath"][0]

	_, err := os.Stat(imagePath)
	if os.IsNotExist(err) {
		err = os.MkdirAll(imagePath, 0777)
		if err != nil {
			logger.Println("ERROR: ", err.Error())

			c.JSON(200, gin.H{
				"Error": err.Error(),
			})
			return
		}
	}

	_, err = os.Stat(thumbPath)
	if os.IsNotExist(err) {
		err = os.MkdirAll(thumbPath, 0777)
		if err != nil {
			logger.Println("ERROR: ", err.Error())

			c.JSON(200, gin.H{
				"Error": err.Error(),
			})
			return
		}
	}

	e = uploadImageFiles(imagePath, thumbPath, form.File["Files"], c)
	if e != nil {
		logger.Println(e)

		c.JSON(200, gin.H{
			"Error": e.Error(),
		})
		return
	}

	e = m.Insert()
	if e != nil {
		logger.Println(e)

		c.JSON(200, gin.H{
			"Error": e.Error(),
		})
		return
	}

	if m.Category == "новость" {
		prepareNews()
		prepareNewsPagination()
	}
	if m.Category == "объявление" {
		prepareNotice()
	}

	c.JSON(200, gin.H{
		"Error": nil,
	})
}

func handlerUpdateMaterial(c *gin.Context) {
	man := getManagerFromContext(c)

	if man.Role != "__admin" {
		c.JSON(200, gin.H{
			"Error": errorAccessRestricted,
		})
		return
	}

	form, e := c.MultipartForm()
	if e != nil {
		logger.Println("ERROR", e)

		c.JSON(200, gin.H{
			"Error": errorBadRequestData,
		})
		return
	}

	m := material{}

	m.Category = c.Param("category")

	m.Author = man.ID
	m.Caption = form.Value["Caption"][0]
	m.Source = form.Value["Source"][0]
	// m.SourceImages = form.Value["SourceImages"][0]
	m.Link = form.Value["Link"][0]
	m.Content = template.HTML(form.Value["Content"][0])
	m.Preview.Valid, _ = strconv.ParseBool(form.Value["PreviewValid"][0])
	if m.Preview.Valid {
		m.Preview.String = form.Value["PreviewString"][0]
	}
	// m.Image.Valid, _ = strconv.ParseBool(form.Value["ImageValid"][0])
	// if m.Image.Valid {
	// 	m.Image.String = form.Value["ImageString"][0]
	// }

	imagePath := Setting.Data + form.Value["ImagePath"][0]
	thumbPath := Setting.Data + form.Value["ThumbPath"][0]

	_, err := os.Stat(imagePath)
	if os.IsNotExist(err) {
		err = os.MkdirAll(imagePath, 0777)
		if err != nil {
			logger.Println("ERROR: ", err.Error())

			c.JSON(200, gin.H{
				"Error": err.Error(),
			})
			return
		}
	}

	_, err = os.Stat(thumbPath)
	if os.IsNotExist(err) {
		err = os.MkdirAll(thumbPath, 0777)
		if err != nil {
			logger.Println("ERROR: ", err.Error())

			c.JSON(200, gin.H{
				"Error": err.Error(),
			})
			return
		}
	}

	e = uploadImageFiles(imagePath, thumbPath, form.File["Files"], c)
	if e != nil {
		logger.Println(e)

		c.JSON(200, gin.H{
			"Error": e.Error(),
		})
		return
	}

	e = m.Update()
	if e != nil {
		logger.Println(e)

		c.JSON(200, gin.H{
			"Error": e.Error(),
		})
		return
	}

	c.JSON(200, gin.H{
		"Error": nil,
	})
}

func handlerDeleteMaterial(c *gin.Context) {
	man := getManagerFromContext(c)

	if man.Role != "__admin" {
		c.JSON(200, gin.H{
			"Error": errorAccessRestricted,
		})
		return
	}

	m := material{}

	m.Link = c.Param("link")
	m.Active = false

	e := m.Delete()
	if e != nil {
		logger.Println(e)

		c.JSON(200, gin.H{
			"Error": e.Error(),
		})
		return
	}

	c.JSON(200, gin.H{
		"Error": nil,
	})
}

func handlerRestoreMaterial(c *gin.Context) {
	man := getManagerFromContext(c)

	if man.Role != "__admin" {
		c.JSON(200, gin.H{
			"Error": errorAccessRestricted,
		})
		return
	}

	m := material{}

	m.Link = c.Param("link")
	m.Active = true

	e := m.Delete()
	if e != nil {
		logger.Println(e)

		c.JSON(200, gin.H{
			"Error": e.Error(),
		})
		return
	}

	c.JSON(200, gin.H{
		"Error": nil,
	})
}

func handlerSelectLimitMaterial(c *gin.Context) {

	l := limit{}
	e := c.BindJSON(&l)
	if e != nil {
		logger.Println(e.Error())

		c.JSON(200, gin.H{
			"Error": e.Error(),
		})
		return
	}

	news := material{}

	news.Category = c.Param("category")

	e = news.Select(l.Offset, l.Limit)
	if e != nil {
		logger.Println(e.Error())

		c.JSON(200, gin.H{
			"Error": e.Error(),
		})
		return
	}

	c.JSON(200, gin.H{
		"Error": nil,
		"Data":  news.Rows,
	})
}

func uploadImageFiles(imagePath, thumbPath string, files []*multipart.FileHeader, c *gin.Context) error {

	for _, file := range files {
		if e := c.SaveUploadedFile(file, imagePath+file.Filename); e != nil {
			logger.Println("ERROR: ", e.Error())
			return e
		}
		src, e := file.Open()
		if e != nil {
			logger.Println("ERROR: ", e.Error())
			return e
		}

		img0, _, e := image.Decode(src)
		if e != nil {
			logger.Println("ERROR: ", e.Error())
			return e
		}

		img := resize.Resize(450, 0, img0, resize.Bicubic)

		var fileThumb *os.File
		fileThumb, e = os.Create(thumbPath + file.Filename)
		if e != nil {
			logger.Println("ERROR: ", e.Error())
			return e
		}
		defer fileThumb.Close()

		fileWrite := bufio.NewWriter(fileThumb)

		e = jpeg.Encode(fileWrite, img, nil)
		if e != nil {
			logger.Println("ERROR: ", e.Error())
			return e
		}
	}

	return nil
}

func handlerMaterialGetSource(c *gin.Context) {
	m := material{}

	m.Link = c.Param("link")

	e := m.SelectSource()
	if e != nil {
		logger.Println(e)

		c.JSON(200, gin.H{
			"Error": e.Error(),
		})
		return
	}

	c.JSON(200, gin.H{
		"Error": nil,
		"Data":  m,
	})
}

func handlerMaterialGet(c *gin.Context) {
	m := material{}
	e := m.SelectAll()
	if e != nil {
		logger.Println("ERROR", e)
		c.JSON(200, gin.H{
			"Error": nil,
			"Data":  nil,
		})
		return
	}

	c.JSON(200, gin.H{
		"Error": nil,
		"Data":  m.Rows,
	})
}