@php
    $isEdit = $summary !== null;
    $action = $action ?? ($isEdit ? route('discharge-summaries.update', $summary) : route('discharge-summaries.store'));
    $method = $method ?? ($isEdit ? 'PUT' : 'POST');
    $backRoute = $backRoute ?? ($isEdit ? route('discharge-summaries.show', $summary) : route('admissions.show', $admission));

    $deathLocked = (bool) ($summary?->is_death_summary ?? false);
    $deathOpen = (bool) old('is_death_summary', $deathLocked);
    $canDeath = auth()->user()->can('discharge-summaries.death');

    $typeOptions = \App\Support\Lookup::options('discharge_type');
    $conditionOptions = \App\Support\Lookup::options('condition_at_discharge');
    $icdOptions = $icdCodes->mapWithKeys(fn ($c) => [$c->id => $c->code.' — '.$c->description])->all();

    $medDefaults = [
        'drug_name' => '', 'dose' => '', 'route' => 'oral',
        'frequency' => '', 'duration' => '', 'instructions' => '',
    ];

    $seedMeds = is_array(old('medications'))
        ? array_values(old('medications'))
        : ($summary?->medications->map(fn ($m) => [
            'drug_name' => $m->drug_name, 'dose' => $m->dose ?? '', 'route' => $m->route ?? 'oral',
            'frequency' => $m->frequency ?? '', 'duration' => $m->duration ?? '',
            'instructions' => $m->instructions ?? '',
        ])->all() ?? []);

    $seedMeds = collect($seedMeds)
        ->map(fn ($row) => array_merge($medDefaults, is_array($row) ? $row : []))
        ->values()
        ->all();
@endphp

<div class="grid gap-6 xl:grid-cols-[1fr_20rem]">
    <form method="POST" action="{{ $action }}" class="space-y-6"
          x-data="{ death: @js($deathOpen), meds: @js($seedMeds) }">
        @csrf
        @if ($method !== 'POST')
            @method($method)
        @endif

        @if (! $isEdit)
            <input type="hidden" name="admission_id" value="{{ $admission->id }}">
        @endif

        @if ($deathLocked)
            <input type="hidden" name="is_death_summary" value="1">
        @endif

        @if (isset($errors) && $errors->any())
            <div class="rounded-lg border border-red-200 bg-red-50 px-4 py-3 text-sm text-red-800">
                <p class="font-medium">The summary was not saved.</p>
                <ul class="mt-1 list-inside list-disc space-y-0.5 text-xs">
                    @foreach ($errors->all() as $message)
                        <li>{{ $message }}</li>
                    @endforeach
                </ul>
            </div>
        @endif

        <x-card title="Disposition" icon="exit">
            <div class="grid gap-4 sm:grid-cols-2">
                <x-form.select name="discharge_type" label="Discharge type" :options="$typeOptions"
                               :value="old('discharge_type', $summary?->discharge_type ?? ($deathLocked ? 'deceased' : 'normal'))"
                               :placeholder="false" required />
                <x-form.select name="condition_at_discharge" label="Condition at discharge" :options="$conditionOptions"
                               :value="old('condition_at_discharge', $summary?->condition_at_discharge ?? ($deathLocked ? 'deceased' : 'improved'))"
                               :placeholder="false" required />
            </div>

            <p class="mt-3 text-xs text-slate-500">
                Routine and on-medical-advice discharges close a completed course of care; on-request and
                against-advice (DAMA/LAMA) record that the patient chose to leave; transfer and referral name
                the receiving facility below; extended/home care hands over to a continuing provider.
            </p>

            @if ($canDeath && ! $deathLocked)
                <div class="mt-4 border-t border-slate-100 pt-4">
                    <x-form.checkbox name="is_death_summary" label="This is a death summary"
                                     :checked="$deathOpen"
                                     hint="A death in the ward closes with this document instead — cause of death, notification of next of kin. Discharge type and condition record as Death." />
                </div>
            @endif

            <div x-show="death" x-cloak class="mt-4 space-y-4 rounded-lg bg-slate-50 p-4">
                <div class="grid gap-4 sm:grid-cols-2">
                    <x-form.input type="datetime-local" name="death_datetime" label="Date and time of death"
                                  :value="old('death_datetime', $summary?->death_datetime?->format('Y-m-d\TH:i'))" required />
                    <div class="flex flex-wrap items-end gap-x-5 gap-y-2 pb-2">
                        <x-form.checkbox name="autopsy_requested" label="Autopsy requested"
                                         :checked="(bool) old('autopsy_requested', $summary?->autopsy_requested)" />
                        <x-form.checkbox name="notified_next_of_kin" label="Next of kin notified"
                                         :checked="(bool) old('notified_next_of_kin', $summary?->notified_next_of_kin)" />
                    </div>
                </div>

                <x-form.textarea name="cause_of_death" label="Cause of death" rows="2" required
                                 :value="old('cause_of_death', $summary?->cause_of_death)"
                                 placeholder="The disease or injury directly leading to death" />

                <div class="grid gap-4 sm:grid-cols-3">
                    <x-form.input name="immediate_cause" label="Immediate cause"
                                  :value="old('immediate_cause', $summary?->immediate_cause)"
                                  placeholder="e.g. Acute myocardial infarction" />
                    <x-form.input name="antecedent_cause" label="Antecedent cause"
                                  :value="old('antecedent_cause', $summary?->antecedent_cause)"
                                  placeholder="e.g. Ischaemic heart disease" />
                    <x-form.input name="underlying_cause" label="Underlying cause"
                                  :value="old('underlying_cause', $summary?->underlying_cause)"
                                  placeholder="e.g. Type 2 diabetes mellitus" />
                </div>
            </div>
        </x-card>

        <x-card title="Diagnoses" icon="stethoscope">
            <div class="space-y-4">
                @if (! $isEdit)
                    <div class="rounded-lg border border-slate-200 bg-slate-50 px-4 py-3 text-xs text-slate-600">
                        <span class="font-medium text-slate-700">On admission:</span>
                        {{ $admission->admission_diagnosis ?? $admission->provisional_diagnosis ?? 'Not recorded on the admission.' }}
                        <span class="mt-1 block">The snapshot is copied onto the summary so the paper still reads true after the bed has turned over.</span>
                    </div>
                @endif

                <x-form.textarea name="final_diagnosis" label="Final diagnosis" rows="2" required
                                 :value="old('final_diagnosis', $summary?->final_diagnosis)"
                                 placeholder="The diagnosis the patient leaves with" />

                <div class="grid gap-4 sm:grid-cols-2">
                    <x-form.select name="icd10_code_id" label="ICD-10 code" :options="$icdOptions"
                                   :value="old('icd10_code_id', $summary?->icd10_code_id)"
                                   placeholder="No code assigned" />
                </div>

                <x-form.textarea name="presenting_complaints" label="Presenting complaints" rows="2"
                                 :value="old('presenting_complaints', $summary?->presenting_complaints ?? $admission->presenting_complaints)" />
            </div>
        </x-card>

        <x-card title="Course in hospital" icon="clipboard-list">
            <div class="space-y-4">
                <x-form.textarea name="significant_findings" label="Significant findings" rows="2"
                                 :value="old('significant_findings', $summary?->significant_findings)" />
                <x-form.textarea name="investigations_summary" label="Investigations summary" rows="2"
                                 :value="old('investigations_summary', $summary?->investigations_summary)"
                                 placeholder="The labs and imaging that mattered, and what they showed" />
                <x-form.textarea name="procedures_performed" label="Procedures performed" rows="2"
                                 :value="old('procedures_performed', $summary?->procedures_performed)" />
                <x-form.textarea name="course_in_hospital" label="Course in hospital" rows="3"
                                 :value="old('course_in_hospital', $summary?->course_in_hospital)"
                                 placeholder="How the stay unfolded — response to treatment, complications, turning points" />
                <x-form.textarea name="treatment_given" label="Treatment given" rows="2"
                                 :value="old('treatment_given', $summary?->treatment_given)" />
            </div>
        </x-card>

        <x-card title="Drugs to take home" icon="pill">
            <x-slot:header>
                The DTT list — what the patient carries out, how it is taken, and for how long. It prints
                on the back of the summary.
            </x-slot:header>

            <x-form.textarea name="discharge_medications_note" label="Note on the medicines" rows="2"
                             :value="old('discharge_medications_note', $summary?->discharge_medications_note)"
                             placeholder="Counselling points that apply to the whole list" />

            <div class="mt-4 border-t border-slate-100 pt-4">
                <div class="mb-3 flex items-center justify-between">
                    <h3 class="text-sm font-semibold text-slate-800">Medicines</h3>
                    <span class="text-xs text-slate-500"><span class="font-medium text-slate-700" x-text="meds.length"></span> item(s)</span>
                </div>

                <div x-show="! meds.length" x-cloak
                     class="rounded-lg border border-dashed border-slate-300 px-4 py-6 text-center">
                    <p class="text-sm font-medium text-slate-600">No medicines listed</p>
                    <p class="text-xs text-slate-500">Add what the patient takes home — leave blank only if nothing goes home.</p>
                </div>

                <div class="space-y-3">
                    <template x-for="(med, index) in meds" :key="index">
                        <div class="rounded-lg border border-slate-200 bg-white p-3">
                            <div class="grid gap-3 sm:grid-cols-2 lg:grid-cols-6">
                                <div class="lg:col-span-2">
                                    <label class="hms-label">Medicine <span class="text-red-500">*</span></label>
                                    <input type="text" :name="`medications[${index}][drug_name]`" x-model="med.drug_name"
                                           class="hms-input" list="dtt-drug-list" placeholder="Name, strength">
                                </div>
                                <div>
                                    <label class="hms-label">Dose</label>
                                    <input type="text" :name="`medications[${index}][dose]`" x-model="med.dose"
                                           class="hms-input" placeholder="e.g. 500 mg">
                                </div>
                                <div>
                                    <label class="hms-label">Frequency</label>
                                    <input type="text" :name="`medications[${index}][frequency]`" x-model="med.frequency"
                                           class="hms-input" placeholder="e.g. 1×3 for 5 days">
                                </div>
                                <div>
                                    <label class="hms-label">Route</label>
                                    <input type="text" :name="`medications[${index}][route]`" x-model="med.route"
                                           class="hms-input">
                                </div>
                                <div>
                                    <label class="hms-label">Duration</label>
                                    <input type="text" :name="`medications[${index}][duration]`" x-model="med.duration"
                                           class="hms-input" placeholder="e.g. 5 days">
                                </div>
                            </div>
                            <div class="mt-3 flex items-end gap-3">
                                <div class="flex-1">
                                    <label class="hms-label">Instructions</label>
                                    <input type="text" :name="`medications[${index}][instructions]`" x-model="med.instructions"
                                           class="hms-input" placeholder="e.g. Take with food, mornings only">
                                </div>
                                <button type="button" class="hms-btn-ghost hms-btn-sm shrink-0 text-red-600 hover:bg-red-50"
                                        x-on:click="meds.splice(index, 1)">
                                    <x-icon name="trash" size="xs" />
                                    Remove
                                </button>
                            </div>
                        </div>
                    </template>
                </div>

                <button type="button" class="hms-btn-secondary hms-btn-sm mt-3"
                        x-on:click="meds.push({ drug_name: '', dose: '', route: 'oral', frequency: '', duration: '', instructions: '' })">
                    <x-icon name="plus" size="xs" />
                    Add a medicine
                </button>

                <datalist id="dtt-drug-list">
                    @foreach ($drugs as $drug)
                        <option value="{{ $drug->name }}{{ $drug->strength ? ' '.$drug->strength : '' }}">
                    @endforeach
                </datalist>
            </div>
        </x-card>

        <x-card title="Follow-up and advice" icon="calendar">
            <div class="space-y-4">
                <div class="grid gap-4 sm:grid-cols-2">
                    <x-form.input type="date" name="follow_up_date" label="Follow-up clinic date"
                                  :min="now()->toDateString()"
                                  :value="old('follow_up_date', $summary?->follow_up_date?->toDateString())"
                                  hint="Issuing the summary books this as a follow-up appointment." />
                </div>

                <x-form.textarea name="follow_up_instructions" label="Follow-up instructions" rows="2"
                                 :value="old('follow_up_instructions', $summary?->follow_up_instructions)"
                                 placeholder="Where to report, what to bring, which results to collect" />

                <div class="grid gap-4 sm:grid-cols-2">
                    <x-form.textarea name="diet_advice" label="Diet advice" rows="2"
                                     :value="old('diet_advice', $summary?->diet_advice)" />
                    <x-form.textarea name="activity_advice" label="Activity advice" rows="2"
                                     :value="old('activity_advice', $summary?->activity_advice)" />
                </div>

                <div class="grid gap-4 sm:grid-cols-2">
                    <x-form.textarea name="wound_care" label="Wound care" rows="2"
                                     :value="old('wound_care', $summary?->wound_care)" />
                    <x-form.textarea name="danger_signs" label="Danger signs — return immediately if" rows="2"
                                     :value="old('danger_signs', $summary?->danger_signs)" />
                </div>
            </div>
        </x-card>

        <x-card title="Transfer and referral" icon="arrow-right">
            <div class="grid gap-4 sm:grid-cols-2">
                <x-form.input name="referred_to" label="Receiving facility"
                              :value="old('referred_to', $summary?->referred_to)"
                              placeholder="e.g. Kenyatta National Hospital" />
                <x-form.input name="referral_reason" label="Reason for referral"
                              :value="old('referral_reason', $summary?->referral_reason)"
                              placeholder="e.g. Cardiac catheterisation" />
            </div>
            <p class="mt-3 text-xs text-slate-500">Required when the discharge type is a transfer or a referral.</p>
        </x-card>

        <x-card title="Notes" icon="note">
            <x-form.textarea name="notes" label="Internal notes" rows="2"
                             :value="old('notes', $summary?->notes)" />
        </x-card>

        <div class="flex items-center justify-end gap-3">
            <a href="{{ $backRoute }}" class="hms-btn-ghost">Cancel</a>
            <button type="submit" class="hms-btn-primary">
                <x-icon name="check" size="sm" />
                {{ $isEdit ? 'Save the summary' : 'Create the summary' }}
            </button>
        </div>
    </form>

    <div class="space-y-6">
        <x-card title="Admission snapshot" icon="bed">
            <p class="text-lg font-semibold text-slate-900">{{ $admission->patient->full_name }}</p>
            <p class="mt-0.5 font-mono text-xs text-slate-500">{{ $admission->patient->medical_record_number }}</p>
            <dl class="hms-dl mt-3">
                <dt>Admission</dt>
                <dd class="font-mono">{{ $admission->admission_no }}</dd>
                <dt>Date</dt>
                <dd>{{ $admission->admission_date->format('d M Y') }}</dd>
                <dt>Ward</dt>
                <dd>{{ $admission->ward?->name ?? 'Not yet bedded' }}</dd>
                <dt>Bed</dt>
                <dd>{{ $admission->bed?->bed_number ?? '—' }}</dd>
                <dt>Admitting</dt>
                <dd>{{ $admission->admittingDoctor?->name ?? '—' }}</dd>
            </dl>
        </x-card>

        <x-card title="How the paper moves" icon="info">
            <ol class="space-y-2 text-xs leading-relaxed text-slate-600">
                <li><span class="font-medium text-slate-800">1 · Draft.</span> Written here; editable until prepared.</li>
                <li><span class="font-medium text-slate-800">2 · Prepared.</span> Submitted for approval.</li>
                <li><span class="font-medium text-slate-800">3 · Approved.</span> By a second clinician — never the author.</li>
                <li><span class="font-medium text-slate-800">4 · Issued.</span> After billing clearance; books the follow-up visit.</li>
            </ol>
            <p class="mt-3 border-t border-slate-100 pt-3 text-xs text-slate-500">
                An issued summary is a legal record — corrections go through amendment, not editing.
            </p>
        </x-card>
    </div>
</div>