"use client"

import React from "react"
import { Plus, Trash2 } from "lucide-react"
import { InlineImageUploader } from "./InlineImageUploader"
import { useCmsPagePending } from "@/components/dashboard/cms-pages/CmsPagePendingContext"

export interface Review {
  review: string
  fullname: string
  location: string
  avatar: string
}

export interface ReviewsSectionData {
  title: string
  subtitle: string
  reviews: Review[]
}

interface Props {
  value: ReviewsSectionData
  onChange: (value: ReviewsSectionData) => void
  showValidation?: boolean
  defaultSharedData?: ReviewsSectionData
  isDefaultLanguage?: boolean
}

function fieldClass(invalid = false) {
  return `w-full bg-card border rounded-xl px-3 py-2.5 text-sm text-foreground font-sans placeholder:text-muted-foreground outline-none transition-colors focus:ring-2 ${
    invalid
      ? "border-red-400 focus:ring-red-200/70 focus:border-red-500"
      : "border-border focus:ring-[#2BB673]/30 focus:border-[#2BB673]"
  }`
}

function Label({ children }: { children: React.ReactNode }) {
  return (
    <label className="text-xs font-bold text-foreground font-sans uppercase tracking-wider">
      {children}
    </label>
  )
}

export function ReviewsSection({
  value,
  onChange,
  showValidation = false,
  defaultSharedData,
  isDefaultLanguage = false,
}: Props) {
  const { registerStaged, clearStaged } = useCmsPagePending()

  function set<K extends keyof ReviewsSectionData>(key: K, val: ReviewsSectionData[K]) {
    onChange({ ...value, [key]: val })
  }

  function addReview() {
    set("reviews", [...value.reviews, {  review: "", fullname: "", location: "", avatar: "" }])
  }

  function removeReview(i: number) {
    set("reviews", value.reviews.filter((_, idx) => idx !== i))
  }

  function updateReview(i: number, field: keyof Review, val: string) {
    set("reviews", value.reviews.map((r, idx) => (idx === i ? { ...r, [field]: val } : r)))
  }

  return (
    <div className="flex flex-col gap-5">
      <div className="grid grid-cols-2 gap-4">
        <div className="flex flex-col gap-1.5">
          <Label>Title</Label>
          <input type="text" value={value.title} onChange={(e) => set("title", e.target.value)} placeholder="e.g. What Our Patients Say" className={fieldClass(showValidation && !value.title.trim())} />
        </div>
        <div className="flex flex-col gap-1.5">
          <Label>Subtitle</Label>
          <input type="text" value={value.subtitle} onChange={(e) => set("subtitle", e.target.value)} placeholder="e.g. Thousands of satisfied patients" className={fieldClass(showValidation && !value.subtitle.trim())} />
        </div>
      </div>

      <div className={`flex flex-col gap-3 rounded-xl ${showValidation && value.reviews.length === 0 ? "border border-red-300 p-3 bg-red-50/40" : ""}`}>
        <div className="flex items-center justify-between">
          <Label>Reviews</Label>
          <button
            type="button"
            onClick={addReview}
            className="flex cursor-pointer items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-semibold font-sans transition-all hover:brightness-105 active:scale-[0.98]"
            style={{ background: "rgba(43,182,115,0.10)", color: "var(--brand-green)" }}
          >
            <Plus className="w-3.5 h-3.5" aria-hidden="true" />
            Add Review
          </button>
        </div>

        {value.reviews.length === 0 ? (
          <div className="flex flex-col items-center justify-center gap-2 py-8 rounded-xl border border-dashed border-border">
            <p className="text-xs text-muted-foreground font-sans">No reviews yet.</p>
            <button type="button" onClick={addReview} className="text-xs cursor-pointer font-semibold font-sans" style={{ color: "var(--brand-green)" }}>
              Add your first review
            </button>
          </div>
        ) : (
          <div className="flex flex-col gap-3">
            {value.reviews.map((r, i) => (
              <div key={i} className="flex flex-col gap-3 p-4 rounded-xl border border-border bg-muted/40">
                <div className="flex items-center justify-between">
                  <span className="text-xs font-bold font-sans px-2 py-0.5 rounded-md" style={{ background: "rgba(29,45,104,0.08)", color: "var(--brand-navy)" }}>
                    Review {i + 1}
                  </span>
                  <button type="button" onClick={() => removeReview(i)} className="p-1.5 cursor-pointer rounded-lg text-muted-foreground hover:text-red-500 hover:bg-red-50 transition-colors" aria-label={`Remove review ${i + 1}`}>
                    <Trash2 className="w-3.5 h-3.5" aria-hidden="true" />
                  </button>
                </div>
                
                <div className="flex flex-col gap-1.5">
                  <label className="text-xs font-semibold text-muted-foreground font-sans">Review Text</label>
                  <textarea value={r.review} onChange={(e) => updateReview(i, "review", e.target.value)} placeholder="Review content..." rows={3} className={`${fieldClass(showValidation && !r.review.trim())} resize-none leading-relaxed`} />
                </div>
                <div className="grid grid-cols-2 gap-3">
                  <div className="flex flex-col gap-1.5">
                    <label className="text-xs font-semibold text-muted-foreground font-sans">Full Name</label>
                    <input type="text" value={r.fullname} onChange={(e) => updateReview(i, "fullname", e.target.value)} placeholder="John Doe" className={fieldClass(showValidation && !r.fullname.trim())} />
                  </div>
                  <div className="flex flex-col gap-1.5">
                    <label className="text-xs font-semibold text-muted-foreground font-sans">Location</label>
                    <input type="text" value={r.location} onChange={(e) => updateReview(i, "location", e.target.value)} placeholder="e.g. London, UK" className={fieldClass(showValidation && !r.location.trim())} />
                  </div>
                </div>
                <div className={showValidation && !r.avatar.trim() ? "rounded-xl border border-red-400 p-2 bg-red-50/40" : ""}>
                  <InlineImageUploader
                    label="Avatar"
                    value={r.avatar}
                    fallbackValue={
                      isDefaultLanguage
                        ? undefined
                        : defaultSharedData?.reviews?.[i]?.avatar
                    }
                    onChange={(url) => updateReview(i, "avatar", url)}
                    fileBaseName="Reviews"
                    fileIndex={i}
                    onStageImage={(staged) =>
                      registerStaged(
                        "reviews",
                        staged,
                        {
                          uploadEndpoint: "/api/admin/home-page/upload-image?section=reviews",
                          fileIndex: i,
                        },
                        i
                      )
                    }
                    onClearStagedImage={() => clearStaged("reviews", i)}
                    height="h-28"
                  />
                </div>
              </div>
            ))}
          </div>
        )}
      </div>
    </div>
  )
}