"use client"

import { useRef, useState } from "react"
import { useRouter } from "next/navigation"
import { Search, X } from "lucide-react"
import { DriveSearchSuggestionsPanel } from "@/components/drive/drive-search-suggestions"
import { Button } from "@/components/ui/button"
import type { DriveFileInfo } from "@/lib/api/types"
import { useDriveSearchSuggestions } from "@/lib/api/hooks/use-drive-queries"
import { openDriveItem } from "@/lib/drive/drive-open-item"
import {
  type DriveSearchScope,
  buildDriveSearchUrl,
  defaultDriveSearchScope,
  fileBrowserViewForSearchScope,
} from "@/lib/drive/drive-search"
import { useDriveRouteRoot } from "@/lib/drive/drive-route-context"
import type { DriveView } from "@/lib/drive/drive-url"
import { useDebouncedValue } from "@/lib/hooks/use-debounced-value"
import { useDriveUIStore } from "@/lib/stores/drive-ui-store"
import { DRIVE_SEARCH_INPUT_WRAP_CLASS } from "@/lib/drive/drive-chrome-classes"
import { cn } from "@/lib/utils"

interface DriveSearchBarProps {
  value: string
  onChange: (value: string) => void
  scope: DriveSearchScope
  onScopeChange: (scope: DriveSearchScope) => void
  folderPath: string
  contextView: DriveView
  /** When true, suggestions panel hidden (search results page). */
  resultsMode?: boolean
  className?: string
  autoFocus?: boolean
}

export function DriveSearchBar({
  value,
  onChange,
  scope,
  onScopeChange,
  folderPath,
  contextView,
  resultsMode = false,
  className,
  autoFocus = false,
}: DriveSearchBarProps) {
  const router = useRouter()
  const routeRoot = useDriveRouteRoot()
  const openPreview = useDriveUIStore((s) => s.openPreview)
  const inputRef = useRef<HTMLInputElement>(null)
  const [focused, setFocused] = useState(false)
  const debouncedQuery = useDebouncedValue(value, 250)
  const showFolderScope = folderPath !== "/"
  const effectiveScope =
    scope === "folder" && !showFolderScope
      ? defaultDriveSearchScope(contextView, folderPath)
      : scope
  const searchPath = effectiveScope === "folder" ? folderPath : "/"

  const { data, isFetching } = useDriveSearchSuggestions(
    debouncedQuery,
    effectiveScope,
    searchPath,
    focused && !resultsMode && debouncedQuery.trim().length >= 2
  )

  const suggestions = data?.files ?? []
  const showPanel =
    !resultsMode && focused && value.trim().length >= 2

  const submitSearch = (query?: string) => {
    const q = (query ?? value).trim()
    if (!q) return
    router.push(
      buildDriveSearchUrl(
        {
          query: q,
          scope: effectiveScope,
          folderPath: effectiveScope === "folder" ? folderPath : "/",
        },
        routeRoot
      )
    )
    inputRef.current?.blur()
  }

  const openSuggestion = (item: DriveFileInfo) => {
    openDriveItem(item, {
      router,
      openPreview,
      view: fileBrowserViewForSearchScope(effectiveScope),
      contextItems: suggestions,
    })
    inputRef.current?.blur()
  }

  return (
    <div
      data-drive-search
      className={cn(
        "relative flex w-full min-w-0 flex-col overflow-visible",
        className
      )}
    >
      <div className={cn(DRIVE_SEARCH_INPUT_WRAP_CLASS, "text-muted-foreground")}>
        <div className="pointer-events-none absolute left-3.5 flex items-center">
          <Search className="size-5 shrink-0" />
        </div>

        <input
          ref={inputRef}
          type="text"
          enterKeyHint="search"
          placeholder="Rechercher dans Drive"
          value={value}
          onChange={(e) => onChange(e.target.value)}
          onFocus={() => setFocused(true)}
          onBlur={() => window.setTimeout(() => setFocused(false), 150)}
          onKeyDown={(e) => {
            if (e.key === "Enter") {
              e.preventDefault()
              submitSearch()
            }
            if (e.key === "Escape") {
              onChange("")
              inputRef.current?.blur()
            }
          }}
          autoFocus={autoFocus}
          className={cn(
            "h-full w-full rounded-full border-0 bg-transparent text-sm text-foreground outline-none placeholder:text-muted-foreground",
            value ? "pl-11 pr-12" : "pl-11 pr-4"
          )}
          autoComplete="off"
        />

        {value && (
          <Button
            variant="ghost"
            size="icon"
            className="absolute right-2 text-gray-600"
            onMouseDown={(e) => e.preventDefault()}
            onClick={() => {
              onChange("")
              inputRef.current?.focus()
            }}
            aria-label="Effacer la recherche"
          >
            <X className="h-5 w-5" />
          </Button>
        )}
      </div>

      {showPanel ? (
        <DriveSearchSuggestionsPanel
          query={value}
          scope={effectiveScope}
          onScopeChange={onScopeChange}
          showFolderScope={showFolderScope}
          suggestions={suggestions}
          loading={isFetching && suggestions.length === 0}
          onPickItem={openSuggestion}
          onSubmitSearch={() => submitSearch()}
        />
      ) : null}
    </div>
  )
}