{% load i18n %}
<section id="pdfSummaryContent" class="bg-white rounded-2xl p-4 shadow-sm border border-slate-100">
    <div class="flex items-center justify-between mb-4">
        <h3 class="text-lg font-bold text-navy flex items-center gap-2">
            <i data-lucide="file-text" class="w-6 h-6"></i> {% trans "PDF Report" %}
        </h3>
    </div>

    <p class="text-slate text-sm mb-4">
        {% trans "Generate a complaint report PDF with the actual complaint and department response." %}
    </p>

    <!-- State: checking -->
    <div id="pdfSummaryChecking" class="text-center py-10">
        <div class="inline-block w-8 h-8 border-[3px] border-navy/20 border-t-navy rounded-full animate-spin"></div>
        <p class="text-slate text-sm mt-4">{% trans "Checking..." %}</p>
    </div>

    <!-- State: empty -->
    <div id="pdfSummaryEmpty" class="hidden">
        <button onclick="generateSummaries()" id="generateSummariesBtn"
            class="inline-flex items-center gap-2.5 px-4 py-2 text-xs bg-gradient-to-r from-navy to-blue text-white rounded-lg font-bold hover:from-blue hover:to-navy transition shadow-lg w-full justify-center">
            <i data-lucide="file-text" class="w-4 h-4"></i>
            {% trans "Generate Report" %}
        </button>
    </div>

    <!-- State: loading_ai -->
    <div id="pdfSummaryLoadingAi" class="text-center py-10 hidden">
        <div class="inline-block w-8 h-8 border-[3px] border-navy/20 border-t-navy rounded-full animate-spin"></div>
        <p class="text-slate text-sm mt-4">{% trans "Preparing report..." %}</p>
        <p class="text-slate text-xs mt-1">{% trans "Compiling complaint data" %}</p>
    </div>

    <!-- State: edit (read-only display) -->
    <div id="pdfSummaryEdit" class="hidden">
        <div class="mb-5">
            <h4 class="text-sm font-bold text-navy mb-3 pb-2 border-b border-slate-200">{% trans "Complaint Info" %}</h4>
            <div class="grid grid-cols-2 gap-3 mb-4">
                <div>
                    <p class="text-xs font-semibold text-slate mb-1">{% trans "Name" %}</p>
                    <p id="fld_complainant_name" class="text-sm text-slate bg-slate-50 rounded-lg p-2.5">—</p>
                </div>
                <div>
                    <p class="text-xs font-semibold text-slate mb-1">{% trans "Source" %}</p>
                    <p id="fld_source_name" class="text-sm text-slate bg-slate-50 rounded-lg p-2.5">—</p>
                </div>
                <div>
                    <p class="text-xs font-semibold text-slate mb-1">{% trans "Submission Date" %}</p>
                    <p id="fld_submission_date" class="text-sm text-slate bg-slate-50 rounded-lg p-2.5">—</p>
                </div>
                <div>
                    <p class="text-xs font-semibold text-slate mb-1">{% trans "Incident Date" %}</p>
                    <p id="fld_incident_date" class="text-sm text-slate bg-slate-50 rounded-lg p-2.5">—</p>
                </div>
                <div class="col-span-2">
                    <p class="text-xs font-semibold text-slate mb-1">{% trans "Department" %}</p>
                    <p id="fld_department_name" class="text-sm text-slate bg-slate-50 rounded-lg p-2.5">—</p>
                </div>
            </div>

            <h4 class="text-sm font-bold text-navy mb-3 pb-2 border-b border-slate-200">{% trans "Staff Details" %}</h4>
            <div class="grid grid-cols-2 gap-3 mb-4">
                <div>
                    <p class="text-xs font-semibold text-slate mb-1">{% trans "Staff Name" %}</p>
                    <p id="fld_accused_staff_name" class="text-sm text-slate bg-slate-50 rounded-lg p-2.5">—</p>
                </div>
                <div>
                    <p class="text-xs font-semibold text-slate mb-1">{% trans "Job Title" %}</p>
                    <p id="fld_accused_staff_title" class="text-sm text-slate bg-slate-50 rounded-lg p-2.5">—</p>
                </div>
                <div>
                    <p class="text-xs font-semibold text-slate mb-1">{% trans "Sent to Dept" %}</p>
                    <p id="fld_sent_to_dept_date" class="text-sm text-slate bg-slate-50 rounded-lg p-2.5">—</p>
                </div>
                <div>
                    <p class="text-xs font-semibold text-slate mb-1">{% trans "Response Date" %}</p>
                    <p id="fld_response_date" class="text-sm text-slate bg-slate-50 rounded-lg p-2.5">—</p>
                </div>
            </div>

            <h4 class="text-sm font-bold text-navy mb-3 pb-2 border-b border-slate-200">{% trans "Content" %}</h4>
            <div class="mb-3">
                <p class="text-xs font-semibold text-slate mb-1">{% trans "Complaint" %}</p>
                <p id="fld_content_summary" class="text-sm text-slate bg-slate-50 rounded-xl p-3 leading-relaxed">—</p>
            </div>
            <div class="mb-5">
                <p class="text-xs font-semibold text-slate mb-1">{% trans "Department Response" %}</p>
                <p id="fld_dept_response_summary" class="text-sm text-slate bg-slate-50 rounded-xl p-3 leading-relaxed">—</p>
            </div>

            <button onclick="generatePdf()" id="generatePdfBtn"
                class="inline-flex items-center gap-2 px-4 py-2 text-xs bg-gradient-to-r from-navy to-blue text-white rounded-lg font-bold hover:from-blue hover:to-navy transition shadow-lg w-full justify-center">
                <i data-lucide="file-text" class="w-4 h-4"></i>
                {% trans "Generate PDF" %}
            </button>
        </div>
    </div>

    <!-- State: loading_pdf -->
    <div id="pdfSummaryLoadingPdf" class="text-center py-10 hidden">
        <div class="inline-block w-8 h-8 border-[3px] border-navy/20 border-t-navy rounded-full animate-spin"></div>
        <p class="text-slate text-sm mt-4">{% trans "Generating your PDF..." %}</p>
        <p class="text-slate text-xs mt-1">{% trans "This may take a moment" %}</p>
    </div>

    <!-- State: ready -->
    <div id="pdfSummaryReady" class="hidden">
        <div class="bg-green-50 border border-green-200 rounded-xl p-4 flex items-start gap-3 mb-4">
            <i data-lucide="check-circle" class="w-5 h-5 text-green-500 flex-shrink-0 mt-0.5"></i>
            <div class="flex-1 min-w-0">
                <p class="text-green-700 text-sm font-semibold">{% trans "PDF report ready" %}</p>
                <p class="text-green-600 text-xs mt-0.5">{% trans "You can download or regenerate the report" %}</p>
            </div>
        </div>

        <div class="border border-slate-200 rounded-xl overflow-hidden mb-4 bg-slate-50">
            <iframe id="pdfSummaryIframe" class="w-full border-0" style="height:550px;"></iframe>
        </div>

        <div class="flex items-center gap-3">
            <a id="pdfSummaryDownloadLink" href="#" download
                class="inline-flex items-center gap-2 px-4 py-2 text-xs bg-gradient-to-r from-navy to-blue text-white rounded-lg font-bold hover:from-blue hover:to-navy transition shadow-lg flex-1 justify-center">
                <i data-lucide="download" class="w-4 h-4"></i>
                {% trans "Download PDF" %}
            </a>
            <button onclick="generateSummaries()"
                class="inline-flex items-center gap-2 px-3 py-2 bg-slate-100 rounded-lg text-xs text-slate hover:bg-slate-200 transition font-semibold whitespace-nowrap">
                <i data-lucide="refresh-cw" class="w-3.5 h-3.5"></i>
                {% trans "Refresh Data" %}
            </button>
        </div>
    </div>

    <!-- State: error -->
    <div id="pdfSummaryError" class="hidden">
        <div class="bg-red-50 border border-red-200 rounded-xl p-4 flex items-start gap-3">
            <i data-lucide="alert-circle" class="w-5 h-5 text-red-500 flex-shrink-0 mt-0.5"></i>
            <div>
                <p class="text-red-700 text-sm font-semibold">{% trans "Generation Failed" %}</p>
                <p id="pdfSummaryErrorMsg" class="text-red-600 text-xs mt-1"></p>
            </div>
        </div>
        <div class="text-center mt-4">
            <button onclick="clearError()"
                class="inline-flex items-center gap-2 px-4 py-2 bg-slate-100 rounded-lg text-sm text-slate hover:bg-slate-200 transition">
                <i data-lucide="arrow-left" class="w-3.5 h-3.5"></i>
                {% trans "Back" %}
            </button>
        </div>
    </div>
</section>

<script>
(function() {
    let _pdfBlobUrl = null;
    let _fileUrl = null;

    const FIELD_IDS = [
        'complainant_name', 'source_name', 'submission_date', 'incident_date',
        'department_name', 'accused_staff_name', 'accused_staff_title',
        'sent_to_dept_date', 'response_date', 'content_summary', 'dept_response_summary'
    ];

    function populateFields(data, prefix) {
        for (const id of FIELD_IDS) {
            const el = document.getElementById(prefix + id);
            if (el && data[id] !== undefined) el.textContent = data[id] || '—';
        }
    }

    function collectFields(prefix) {
        const data = {};
        for (const id of FIELD_IDS) {
            const el = document.getElementById(prefix + id);
            if (el) data[id] = el.textContent;
        }
        return data;
    }

    function showState(state) {
        document.getElementById('pdfSummaryChecking').classList.toggle('hidden', state !== 'checking');
        document.getElementById('pdfSummaryEmpty').classList.toggle('hidden', state !== 'empty');
        document.getElementById('pdfSummaryLoadingAi').classList.toggle('hidden', state !== 'loading_ai');
        document.getElementById('pdfSummaryEdit').classList.toggle('hidden', state !== 'edit');
        document.getElementById('pdfSummaryLoadingPdf').classList.toggle('hidden', state !== 'loading_pdf');
        document.getElementById('pdfSummaryReady').classList.toggle('hidden', state !== 'ready');
        document.getElementById('pdfSummaryError').classList.toggle('hidden', state !== 'error');
        try { lucide.createIcons(); } catch(e) {}
    }

    function setError(msg) {
        document.getElementById('pdfSummaryErrorMsg').textContent = msg;
        showState('error');
    }

    window.clearError = function() {
        document.getElementById('pdfSummaryEmpty').classList.remove('hidden');
        document.getElementById('pdfSummaryError').classList.add('hidden');
    };

    window.toggleEditForm = function() {
        const form = document.getElementById('pdfSummaryReadyEdit');
        const isHidden = form.classList.contains('hidden');
        form.classList.toggle('hidden');
        document.getElementById('toggleEditBtn').innerHTML = isHidden
            ? '<i data-lucide="x" class="w-3.5 h-3.5"></i> إغلاق'
            : '<i data-lucide="edit" class="w-3.5 h-3.5"></i> تعديل النص';
        try { lucide.createIcons(); } catch(e) {}
    };

    // Check existing summary on load
    fetch('/complaints/api/complaints/{{ complaint.id }}/summary_preview/', {
        method: 'GET',
        headers: { 'X-CSRFToken': getCSRFToken() },
        credentials: 'same-origin',
    })
    .then(r => r.json())
    .then(data => {
        if (data.exists) {
            populateFields(data, 'fld_');
            populateFields(data, 'fld2_');
            if (data.has_file) {
                _fileUrl = data.file_url;
                document.getElementById('pdfSummaryDownloadLink').href = data.file_url;
                fetch(data.file_url)
                    .then(r => r.blob())
                    .then(blob => {
                        var blobUrl = URL.createObjectURL(blob);
                        document.getElementById('pdfSummaryIframe').src = blobUrl;
                    });
                showState('ready');
            } else {
                showState('edit');
            }
        } else {
            // Populate with computed DB values even without saved summary
            populateFields(data, 'fld_');
            populateFields(data, 'fld2_');
            showState('empty');
        }
    })
    .catch(() => {
        showState('empty');
    });

    // Generate AI summaries (POST summary_preview)
    window.generateSummaries = function() {
        showState('loading_ai');

        fetch('/complaints/api/complaints/{{ complaint.id }}/summary_preview/', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'X-CSRFToken': getCSRFToken(),
            },
            credentials: 'same-origin',
            body: JSON.stringify({ lang: 'ar' })
        })
        .then(r => {
            if (!r.ok) return r.json().then(d => { throw new Error(d.error || 'Request failed'); });
            return r.json();
        })
        .then(data => {
            populateFields(data, 'fld_');
            populateFields(data, 'fld2_');
            showState('edit');
        })
        .catch(err => {
            setError(err.message || '{% trans "An unexpected error occurred" %}');
        });
    };

    // Generate PDF (POST generate_summary_pdf)
    function doGeneratePdf(prefix) {
        showState('loading_pdf');

        if (_pdfBlobUrl) {
            window.URL.revokeObjectURL(_pdfBlobUrl);
            _pdfBlobUrl = null;
        }

        const body = {
            lang: 'ar',
            ...collectFields(prefix),
        };

        fetch('/complaints/api/complaints/{{ complaint.id }}/generate_summary_pdf/', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'X-CSRFToken': getCSRFToken(),
            },
            credentials: 'same-origin',
            body: JSON.stringify(body)
        })
        .then(response => {
            if (!response.ok) {
                return response.json().then(data => {
                    throw new Error(data.error || 'Request failed');
                }).catch(e => {
                    if (e instanceof SyntaxError) {
                        throw new Error('Server returned an error (' + response.status + ')');
                    }
                    throw e;
                });
            }

            const disposition = response.headers.get('Content-Disposition');
            let filename = 'complaint_report.pdf';
            if (disposition && disposition.indexOf('filename=') !== -1) {
                const matches = disposition.match(/filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/);
                if (matches && matches[1]) {
                    filename = matches[1].replace(/['"]/g, '');
                }
            }

            return response.blob().then(blob => ({ blob, filename }));
        })
        .then(({ blob, filename }) => {
            _pdfBlobUrl = window.URL.createObjectURL(blob);

            document.getElementById('pdfSummaryIframe').src = _pdfBlobUrl;
            document.getElementById('pdfSummaryDownloadLink').href = _pdfBlobUrl;
            document.getElementById('pdfSummaryDownloadLink').download = filename;

            const a = document.createElement('a');
            a.href = _pdfBlobUrl;
            a.download = filename;
            document.body.appendChild(a);
            a.click();
            document.body.removeChild(a);

            // Sync the other form set
            if (prefix === 'fld_') {
                populateFields(collectFields('fld_'), 'fld2_');
            } else {
                populateFields(collectFields('fld2_'), 'fld_');
            }

            showState('ready');
        })
        .catch(err => {
            setError(err.message || '{% trans "An unexpected error occurred" %}');
        });
    }

    window.generatePdf = function() {
        doGeneratePdf('fld_');
    };

    window.generatePdfFromReady = function() {
        doGeneratePdf('fld2_');
    };
})();
</script>