package handlers

import (
	"net/http"
	"path/filepath"
	"strconv"
	"strings"

	"github.com/gin-gonic/gin"

	"gobsidian/internal/utils"
)

func (h *Handlers) SettingsPageHandler(c *gin.Context) {
	notesTree, err := utils.BuildTreeStructure(h.config.NotesDir, h.config.NotesDirHideSidepane, h.config)
	if err != nil {
		c.HTML(http.StatusInternalServerError, "base.html", gin.H{
			"error":    "Failed to build tree structure",
			"app_name": h.config.AppName,
			"message":  err.Error(),
		})
		return
	}

	c.HTML(http.StatusOK, "base.html", gin.H{
		"app_name":     h.config.AppName,
		"notes_tree":   notesTree,
		"active_path":  []string{},
		"current_note": nil,
		"breadcrumbs": []gin.H{
			{"name": "/", "url": "/"},
			{"name": "Settings", "url": ""},
		},
	})
}

func (h *Handlers) GetImageStorageSettingsHandler(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{
		"mode":      h.config.ImageStorageMode,
		"path":      h.config.ImageStoragePath,
		"subfolder": h.config.ImageSubfolderName,
	})
}

func (h *Handlers) PostImageStorageSettingsHandler(c *gin.Context) {
	modeStr := c.PostForm("storage_mode")
	path := strings.TrimSpace(c.PostForm("storage_path"))
	subfolder := strings.TrimSpace(c.PostForm("subfolder_name"))

	mode, err := strconv.Atoi(modeStr)
	if err != nil || mode < 1 || mode > 4 {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid storage mode"})
		return
	}

	// Validate path for mode 2
	if mode == 2 && path == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Storage path is required for mode 2"})
		return
	}

	// Validate subfolder name for mode 4
	if mode == 4 && subfolder == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Subfolder name is required for mode 4"})
		return
	}

	// Save settings
	if err := h.config.SaveSetting("MD_NOTES_APP", "IMAGE_STORAGE_MODE", modeStr); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save storage mode"})
		return
	}

	if mode == 2 {
		if err := h.config.SaveSetting("MD_NOTES_APP", "IMAGE_STORAGE_PATH", path); err != nil {
			c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save storage path"})
			return
		}
	}

	if mode == 4 {
		if err := h.config.SaveSetting("MD_NOTES_APP", "IMAGE_SUBFOLDER_NAME", subfolder); err != nil {
			c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save subfolder name"})
			return
		}
	}

	c.JSON(http.StatusOK, gin.H{
		"success":         true,
		"message":         "Image storage settings updated successfully",
		"reload_required": true,
	})
}

func (h *Handlers) GetNotesDirSettingsHandler(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{
		"notes_dir": h.config.NotesDir,
	})
}

func (h *Handlers) PostNotesDirSettingsHandler(c *gin.Context) {
	newDir := strings.TrimSpace(c.PostForm("notes_dir"))
	if newDir == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Notes directory is required"})
		return
	}

	// Convert to absolute path
	if !filepath.IsAbs(newDir) {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Please provide an absolute path"})
		return
	}

	// Ensure directory exists
	if err := utils.EnsureDir(newDir); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to create directory: " + err.Error()})
		return
	}

	// Save setting
	if err := h.config.SaveSetting("MD_NOTES_APP", "NOTES_DIR", newDir); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save notes directory"})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"success":         true,
		"message":         "Notes directory updated successfully",
		"reload_required": true,
	})
}

func (h *Handlers) GetFileExtensionsSettingsHandler(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{
		"allowed_image_extensions": strings.Join(h.config.AllowedImageExtensions, ", "),
		"allowed_file_extensions":  strings.Join(h.config.AllowedFileExtensions, ", "),
		"images_hide":              h.config.ImagesHide,
	})
}

func (h *Handlers) PostFileExtensionsSettingsHandler(c *gin.Context) {
	imageExtensions := strings.TrimSpace(c.PostForm("allowed_image_extensions"))
	fileExtensions := strings.TrimSpace(c.PostForm("allowed_file_extensions"))
	imagesHide := c.PostForm("images_hide") == "true"

	// Save settings
	if err := h.config.SaveSetting("MD_NOTES_APP", "ALLOWED_IMAGE_EXTENSIONS", imageExtensions); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save image extensions"})
		return
	}

	if err := h.config.SaveSetting("MD_NOTES_APP", "ALLOWED_FILE_EXTENSIONS", fileExtensions); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save file extensions"})
		return
	}

	imagesHideStr := "false"
	if imagesHide {
		imagesHideStr = "true"
	}
	if err := h.config.SaveSetting("MD_NOTES_APP", "IMAGES_HIDE", imagesHideStr); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save images hide setting"})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"success":         true,
		"message":         "File extension settings updated successfully",
		"reload_required": true,
	})
}