package blogviewer

import (
	"errors"
	"net/http"
	"path"
	"personalwebsite/apps/appCtx"
	"personalwebsite/errormessage"
	"personalwebsite/libs"
	"personalwebsite/webfilesystem"

	"github.com/gin-gonic/gin"
	"go.mongodb.org/mongo-driver/bson/primitive"
)

type BlogViewerApplication struct {
	fs    *webfilesystem.WebFileSystem
	appID string
	mLib  libs.MarkdownLib
}

func NewBlogViewerApp(webFs *webfilesystem.WebFileSystem) *BlogViewerApplication {
	return &BlogViewerApplication{
		fs:    webFs,
		appID: "BlogViewer",
		mLib:  libs.MarkdownLib{},
	}
}

func (b *BlogViewerApplication) GetAppID() string {
	return b.appID
}
func (b *BlogViewerApplication) PrivateRoutes(route *gin.RouterGroup) {
	b.PublicRoutes(route)

	route.POST("test", func(ctx *gin.Context) {
		blogData := BlogFileData{}
		err := ctx.BindJSON(&blogData)
		if err != nil {
			ctx.Status(http.StatusBadRequest)
			return
		}

		mLib := libs.MarkdownLib{}
		for _, block := range blogData.Blocks {
			for _, str := range block.Data {
				test := []byte(str)
				mLib.Render(test)
			}
		}
	})

	route.GET("writeMockBlog", func(ctx *gin.Context) {
		path := ctx.Query("path")
		if path == "" {
			ctx.JSON(http.StatusBadRequest, "no path provided")
			return
		}
		err := b.WriteMock(path)
		if err != nil {
			ctx.Status(http.StatusInternalServerError)
			return
		}
		ctx.JSON(http.StatusOK, "OK")
	})

	route.POST("edit", func(ctx *gin.Context) {
		filePath := ctx.Query("path")
		if filePath == "" {
			ctx.JSON(http.StatusBadRequest, errormessage.ErrorMessage{
				Message: "File path is empty",
			})
		}
		blogData := BlogFileData{}
		err := ctx.BindJSON(&blogData)
		if err != nil {
			ctx.Status(http.StatusBadRequest)
			return
		}

		err = b.Edit(filePath, blogData)
		if err != nil {
			ctx.JSON(http.StatusInternalServerError, errormessage.ErrorMessage{
				Message: err.Error(),
			})
			return
		}
		ctx.Status(http.StatusOK)
	})

	route.GET("read", func(ctx *gin.Context) {
		filePath := ctx.Query("path")
		if filePath == "" {
			ctx.JSON(http.StatusBadRequest, errormessage.ErrorMessage{
				Message: "File path is empty",
			})
		}

		blogData, err := b.Read(filePath)
		if err != nil {
			ctx.JSON(http.StatusInternalServerError, errormessage.ErrorMessage{
				Message: err.Error(),
			})
			return
		}
		ctx.JSON(http.StatusOK, blogData)
	})
}

func (b *BlogViewerApplication) PublicRoutes(route *gin.RouterGroup) {

	route.POST("render", func(ctx *gin.Context) {
		path := ctx.Query("path")
		if path == "" {
			ctx.JSON(http.StatusBadRequest, "no path provided")
			return
		}

		appCtx := appCtx.AppContext{}
		err := ctx.BindJSON(&appCtx)
		if err != nil {
			ctx.Status(http.StatusBadRequest)
			return
		}

		ginH, err := b.Render(path, appCtx)
		if err != nil {
			ctx.JSON(http.StatusInternalServerError, "TODO")
			return
		}

		if appCtx.IsMobile {
			ctx.HTML(http.StatusOK, "blog-viewer/mobile-app.tmpl", ginH)
		} else {
			ctx.HTML(http.StatusOK, "blog-viewer/app.tmpl", ginH)
		}

	})
}

func (b *BlogViewerApplication) WriteMock(path string) error {
	blogFileHeader := webfilesystem.FileHeader{ //TODO to fs.CreateDirectory()
		MongoId: primitive.NewObjectID(),
		Name:    "blog1.blog",
		Type:    "directory",
		Icon:    "",
		Data:    [12]byte{},
	}
	blogFileData := webfilesystem.DirectoryData{
		MongoId:  primitive.NewObjectID(),
		Parent:   [12]byte{},
		Children: []primitive.ObjectID{},
	}

	_, _, err := b.fs.Write("/home/user/blog1.blog", &blogFileHeader, blogFileData)
	if err != nil {
		println(err.Error())
		return err
	}

	blogContentFileHeader := webfilesystem.FileHeader{
		MongoId: primitive.NewObjectID(),
		Name:    ".content",
		Type:    "blog-content",
		Icon:    "",
		Data:    [12]byte{},
	}
	blogContentFileData := BlogFileData{
		Header: "OMG THIS IS BLOG",
	}
	blogContentFileData.Blocks = append(blogContentFileData.Blocks, &Block{
		Type: "plain-text",
		Data: []string{
			"Apoqiwepoqiwepo",
			".,mas;dakls;d",
			"q[poqwieqpipoi]",
		},
	})

	_, _, err = b.fs.Write("/home/user/blog1.blog/.content", &blogContentFileHeader, blogContentFileData)
	if err != nil {
		println(err.Error())
		return err
	}

	return nil
}

func (b *BlogViewerApplication) Read(filePath string) (*BlogFileData, error) {
	fileData := BlogFileData{}
	fileHeader, err := b.fs.Read(path.Join(filePath, ".content"), &fileData)
	if err != nil {
		return nil, err
	}

	if fileHeader.Type != "blog-content" {
		return nil, errors.New("wrong file type")
	}

	return &fileData, nil
}

func (b *BlogViewerApplication) Edit(filePath string, blogData BlogFileData) error {
	contentPath := path.Join(filePath, ".content")
	fileHeader, err := b.fs.Read(contentPath, nil)
	if err != nil {
		return err
	}
	if fileHeader.Type != "blog-content" {
		return errors.New("wrong file type")
	}

	err = b.fs.Remove(contentPath)
	if err != nil {
		return err
	}
	fileHeader.MongoId = primitive.NewObjectID()
	_, _, err = b.fs.Write(contentPath, fileHeader, blogData)
	if err != nil {
		return err
	}
	return nil
}

func (b *BlogViewerApplication) Render(filePath string, appCtx appCtx.AppContext) (gin.H, error) {
	data := &BlogFileData{}
	_, err := b.fs.Read(path.Join(filePath, ".content"), &data)
	if err != nil {
		return nil, err
	}

	newData := []RenderedBlock{}
	for _, block := range data.Blocks {
		newBlock := RenderedBlock{}
		switch block.Type {
		case "image":
			// for _, image := range block.Data {
			// newData = append(newData, b.fs.RelativeToAbsolute(appCtx, image))
			// }
		case "markdown":
			for _, data := range block.Data {
				renderedMD := b.mLib.Render([]byte(data))
				newBlock.Data = append(newBlock.Data, renderedMD)
			}
			newData = append(newData, newBlock)
		}
		// block.Data = newData
	}

	return gin.H{
		"header": data.Header,
		"blocks": newData,
		// "html":   html,
	}, nil
}