"use client";

import { Plus, Trash2 } from "lucide-react";
import { Button } from "@/components/ui/button";
import { Checkbox } from "@/components/ui/checkbox";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Textarea } from "@/components/ui/textarea";
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select";

const CIVILIAN_PRESENCE = ["None", "Low", "Medium", "High"] as const;

const INFIL_EXFIL_METHODS = [
  { value: "helicopter", label: "Helicopter" },
  { value: "aircraft", label: "Aircraft" },
  { value: "paradrop", label: "HALO / Paradrop" },
  { value: "boat", label: "Boat" },
  { value: "car", label: "Car" },
  { value: "onFoot", label: "On Foot" },
] as const;

export interface SideOpNarrative {
  briefing: { sectionName: string; details: string }[];
  missionObjectives: {
    title: string;
    description: string;
    missionCritical: boolean;
    successOrFailConditions: string;
    redacted: boolean;
  }[];
  civilianPresence: string;
  radioPlan: string;
  insertion: string[];
  extraction: string[];
  assetsAvailable: {
    assetType: string;
    assetCount: string;
    doesRespawn: boolean;
    assetCallsign: string;
  }[];
}

interface SideOpNarrativeFieldsProps {
  value: SideOpNarrative;
  onChange: (next: SideOpNarrative) => void;
}

function toggleValue(list: string[], value: string): string[] {
  return list.includes(value) ? list.filter((v) => v !== value) : [...list, value];
}

export function SideOpNarrativeFields({ value, onChange }: SideOpNarrativeFieldsProps) {
  const setBriefing = (briefing: SideOpNarrative["briefing"]) => onChange({ ...value, briefing });
  const setObjectives = (missionObjectives: SideOpNarrative["missionObjectives"]) =>
    onChange({ ...value, missionObjectives });
  const setAssets = (assetsAvailable: SideOpNarrative["assetsAvailable"]) =>
    onChange({ ...value, assetsAvailable });

  return (
    <div className="grid gap-5">
      <p className="text-xs text-muted-foreground">
        Plain text only — each line becomes a paragraph. Rich formatting written in the admin panel
        is flattened if you save here.
      </p>

      <div className="grid gap-2">
        <Label>Briefing entries</Label>
        {value.briefing.map((entry, i) => (
          <div key={i} className="grid gap-1.5 rounded-md border p-2.5">
            <div className="flex items-center gap-2">
              <Input
                value={entry.sectionName}
                onChange={(e) => {
                  const next = [...value.briefing];
                  next[i] = { ...entry, sectionName: e.target.value };
                  setBriefing(next);
                }}
                placeholder="Section name (e.g. Situation)"
              />
              <Button
                type="button"
                variant="ghost"
                size="icon"
                aria-label="Remove briefing entry"
                onClick={() => setBriefing(value.briefing.filter((_, j) => j !== i))}
              >
                <Trash2 className="size-4" />
              </Button>
            </div>
            <Textarea
              value={entry.details}
              onChange={(e) => {
                const next = [...value.briefing];
                next[i] = { ...entry, details: e.target.value };
                setBriefing(next);
              }}
              placeholder="Briefing text for this section"
              rows={3}
            />
          </div>
        ))}
        {value.briefing.length < 8 && (
          <Button
            type="button"
            variant="outline"
            size="sm"
            className="w-fit"
            onClick={() =>
              setBriefing([...value.briefing, { sectionName: "", details: "" }])
            }
          >
            <Plus className="size-4" /> Add briefing entry
          </Button>
        )}
      </div>

      <div className="grid gap-2">
        <Label>Mission objectives</Label>
        {value.missionObjectives.map((obj, i) => (
          <div key={i} className="grid gap-1.5 rounded-md border p-2.5">
            <div className="flex items-center gap-2">
              <Input
                value={obj.title}
                onChange={(e) => {
                  const next = [...value.missionObjectives];
                  next[i] = { ...obj, title: e.target.value };
                  setObjectives(next);
                }}
                placeholder="Objective title"
              />
              <Button
                type="button"
                variant="ghost"
                size="icon"
                aria-label="Remove objective"
                onClick={() => setObjectives(value.missionObjectives.filter((_, j) => j !== i))}
              >
                <Trash2 className="size-4" />
              </Button>
            </div>
            <Textarea
              value={obj.description}
              onChange={(e) => {
                const next = [...value.missionObjectives];
                next[i] = { ...obj, description: e.target.value };
                setObjectives(next);
              }}
              placeholder="Description"
              rows={2}
            />
            <Input
              value={obj.successOrFailConditions}
              onChange={(e) => {
                const next = [...value.missionObjectives];
                next[i] = { ...obj, successOrFailConditions: e.target.value };
                setObjectives(next);
              }}
              placeholder="Success / fail conditions"
            />
            <div className="flex flex-wrap gap-4">
              <label className="flex items-center gap-2 text-sm">
                <Checkbox
                  checked={obj.missionCritical}
                  onCheckedChange={(checked) => {
                    const next = [...value.missionObjectives];
                    next[i] = { ...obj, missionCritical: checked === true };
                    setObjectives(next);
                  }}
                />
                Mission critical
              </label>
              <label className="flex items-center gap-2 text-sm">
                <Checkbox
                  checked={obj.redacted}
                  onCheckedChange={(checked) => {
                    const next = [...value.missionObjectives];
                    next[i] = { ...obj, redacted: checked === true };
                    setObjectives(next);
                  }}
                />
                Redacted
              </label>
            </div>
          </div>
        ))}
        <Button
          type="button"
          variant="outline"
          size="sm"
          className="w-fit"
          onClick={() =>
            setObjectives([
              ...value.missionObjectives,
              {
                title: "",
                description: "",
                missionCritical: true,
                successOrFailConditions: "",
                redacted: false,
              },
            ])
          }
        >
          <Plus className="size-4" /> Add objective
        </Button>
      </div>

      <div className="grid gap-2">
        <Label>Civilian presence</Label>
        <Select
          value={value.civilianPresence}
          onValueChange={(civilianPresence) => onChange({ ...value, civilianPresence })}
        >
          <SelectTrigger className="w-full">
            <SelectValue />
          </SelectTrigger>
          <SelectContent>
            {CIVILIAN_PRESENCE.map((c) => (
              <SelectItem key={c} value={c}>
                {c}
              </SelectItem>
            ))}
          </SelectContent>
        </Select>
      </div>

      <div className="grid gap-2">
        <Label>Radio SOP</Label>
        <Textarea
          value={value.radioPlan}
          onChange={(e) => onChange({ ...value, radioPlan: e.target.value })}
          placeholder="How radios will be used: nets, contingency plans, radio silence, etc."
          rows={3}
        />
      </div>

      <div className="grid grid-cols-2 gap-3">
        <div className="grid gap-2">
          <Label>Infiltration methods</Label>
          <div className="grid gap-1.5">
            {INFIL_EXFIL_METHODS.map((m) => (
              <label key={m.value} className="flex items-center gap-2 text-sm">
                <Checkbox
                  checked={value.insertion.includes(m.value)}
                  onCheckedChange={() =>
                    onChange({ ...value, insertion: toggleValue(value.insertion, m.value) })
                  }
                />
                {m.label}
              </label>
            ))}
          </div>
        </div>
        <div className="grid gap-2">
          <Label>Exfiltration methods</Label>
          <div className="grid gap-1.5">
            {INFIL_EXFIL_METHODS.map((m) => (
              <label key={m.value} className="flex items-center gap-2 text-sm">
                <Checkbox
                  checked={value.extraction.includes(m.value)}
                  onCheckedChange={() =>
                    onChange({ ...value, extraction: toggleValue(value.extraction, m.value) })
                  }
                />
                {m.label}
              </label>
            ))}
          </div>
        </div>
      </div>

      <div className="grid gap-2">
        <Label>Logistics &amp; support assets</Label>
        {value.assetsAvailable.map((asset, i) => (
          <div key={i} className="grid gap-1.5 rounded-md border p-2.5">
            <div className="flex items-center gap-2">
              <Input
                value={asset.assetType}
                onChange={(e) => {
                  const next = [...value.assetsAvailable];
                  next[i] = { ...asset, assetType: e.target.value };
                  setAssets(next);
                }}
                placeholder="Asset type (e.g. Artillery, Fuel Truck, CAS)"
              />
              <Button
                type="button"
                variant="ghost"
                size="icon"
                aria-label="Remove asset"
                onClick={() => setAssets(value.assetsAvailable.filter((_, j) => j !== i))}
              >
                <Trash2 className="size-4" />
              </Button>
            </div>
            <div className="grid grid-cols-2 gap-2">
              <Input
                value={asset.assetCount}
                onChange={(e) => {
                  const next = [...value.assetsAvailable];
                  next[i] = { ...asset, assetCount: e.target.value };
                  setAssets(next);
                }}
                placeholder="Count"
              />
              <Input
                value={asset.assetCallsign}
                onChange={(e) => {
                  const next = [...value.assetsAvailable];
                  next[i] = { ...asset, assetCallsign: e.target.value };
                  setAssets(next);
                }}
                placeholder="Callsign"
              />
            </div>
            <label className="flex items-center gap-2 text-sm">
              <Checkbox
                checked={asset.doesRespawn}
                onCheckedChange={(checked) => {
                  const next = [...value.assetsAvailable];
                  next[i] = { ...asset, doesRespawn: checked === true };
                  setAssets(next);
                }}
              />
              Respawnable
            </label>
          </div>
        ))}
        <Button
          type="button"
          variant="outline"
          size="sm"
          className="w-fit"
          onClick={() =>
            setAssets([
              ...value.assetsAvailable,
              { assetType: "", assetCount: "", doesRespawn: false, assetCallsign: "" },
            ])
          }
        >
          <Plus className="size-4" /> Add asset
        </Button>
      </div>
    </div>
  );
}