{% extends 'base.html' %}
{% block title %}{{ evidence.evidence_number }} - DEICMS{% endblock %}
{% block content %}
<div class="topbar">
  <span class="page-title">
    <i class="bi bi-file-earmark-lock2 me-2"></i>{{ evidence.evidence_number }}: {{ evidence.title }}
  </span>
  <div class="d-flex gap-2 flex-wrap">
    {% if current_user.can_manage() %}
    <a href="{{ url_for('evidence.edit_evidence', case_id=case.id, evidence_id=evidence.id) }}"
       class="btn btn-outline-primary btn-sm"><i class="bi bi-pencil me-1"></i>Edit</a>
    <a href="{{ url_for('custody.transfer_evidence', evidence_id=evidence.id) }}"
       class="btn btn-primary btn-sm">Transfer</a>
    <a href="{{ url_for('custody.change_state', evidence_id=evidence.id) }}"
       class="btn btn-outline-secondary btn-sm">Change State</a>
    {% endif %}
    <a href="{{ url_for('custody.verify_integrity', evidence_id=evidence.id) }}"
       class="btn btn-outline-success btn-sm"><i class="bi bi-shield-check me-1"></i>Verify Integrity</a>
    <a href="{{ url_for('custody.reconstruct_chain', evidence_id=evidence.id) }}"
       class="btn btn-outline-info btn-sm"><i class="bi bi-diagram-3 me-1"></i>Reconstruct Chain</a>
    <a href="{{ url_for('audit.evidence_audit', evidence_id=evidence.id) }}"
       class="btn btn-outline-dark btn-sm"><i class="bi bi-journal-text me-1"></i>Audit Trail</a>
    <a href="{{ url_for('risk.evidence_risk', evidence_id=evidence.id) }}"
       class="btn btn-warning">Risk Score</a>
  </div>
</div>

<div class="row g-3">
  <!-- Evidence Details -->
  <div class="col-md-6">
    <div class="card h-100">
      <div class="card-header py-3">
        <i class="bi bi-info-circle me-2"></i>Evidence Details
      </div>
      <div class="card-body">
        {% set rows = [
          ('Case', case.case_number),
          ('Category', evidence.category),
          ('File Name', evidence.file_name),
          ('File Size', (evidence.file_size // 1024)|string + ' KB' if evidence.file_size else '-'),
          ('MIME Type', evidence.file_mime_type or '-'),
          ('Uploaded By', evidence.uploader.full_name),
          ('Current Holder', evidence.current_holder.full_name if evidence.current_holder else '-'),
        ] %}
        {% for label, value in rows %}
        <div class="row mb-2">
          <div class="col-5 text-muted small fw-semibold">{{ label }}</div>
          <div class="col-7 small">{{ value }}</div>
        </div>
        {% endfor %}
        <div class="row mb-2">
          <div class="col-5 text-muted small fw-semibold">State</div>
          <div class="col-7">
            {% set sc = {'Collected':'info','Submitted':'primary','Under Analysis':'warning',
                         'Transferred':'secondary','Archived':'dark','Flagged':'danger'} %}
            <span class="badge bg-{{ sc.get(evidence.lifecycle_state,'secondary') }}">
              {{ evidence.lifecycle_state }}
            </span>
          </div>
        </div>
        <div class="row mb-2">
          <div class="col-5 text-muted small fw-semibold">Risk Level</div>
          <div class="col-7">
            {% if evidence.risk_level == 'High' %}<span class="badge bg-danger">High</span>
            {% elif evidence.risk_level == 'Medium' %}<span class="badge bg-warning text-dark">Medium</span>
            {% else %}<span class="badge bg-success">Low</span>{% endif %}
          </div>
        </div>
      </div>
    </div>
  </div>

  <!-- Integrity Hashes -->
  <div class="col-md-6">
    <div class="card h-100">
      <div class="card-header py-3">
        <i class="bi bi-shield-check me-2"></i>Integrity Hashes
      </div>
      <div class="card-body">
        <div class="mb-3">
          <div class="text-muted small fw-semibold mb-1">Original Hash (SHA-256)</div>
          <div class="hash-text bg-light rounded p-2">{{ evidence.original_hash }}</div>
        </div>
        <div class="mb-3">
          <div class="text-muted small fw-semibold mb-1">Current Hash (SHA-256)</div>
          <div class="hash-text bg-light rounded p-2">{{ evidence.current_hash }}</div>
        </div>
        {% if evidence.original_hash == evidence.current_hash %}
        <div class="alert alert-success py-2 small mb-0">
          <i class="bi bi-check-circle me-1"></i>Hashes match - file integrity confirmed.
        </div>
        {% else %}
        <div class="alert alert-danger py-2 small mb-0">
          <i class="bi bi-x-circle me-1"></i>Hash mismatch detected! Evidence may have been tampered with.
        </div>
        {% endif %}
      </div>
    </div>
  </div>

  <!-- Custody Log -->
  <div class="col-12">
    <div class="card">
      <div class="card-header py-3">
        <i class="bi bi-diagram-3 me-2"></i>Custody Log
      </div>
      <div class="card-body p-0">
        <div class="table-responsive">
          <table class="table table-hover mb-0">
              <tr>
                <th>#</th><th>Event</th><th>From</th><th>To</th>
                <th>Location</th><th>Reason</th><th>Time</th><th>Signature (Truncated)</th>
              </tr>
            </thead>
            <tbody>
              {% for log in custody_logs %}
              <tr>
                <td class="text-muted small">{{ loop.index }}</td>
                <td><span class="badge bg-secondary">{{ log.event_type }}</span></td>
                <td class="small">{{ log.from_investigator.full_name if log.from_investigator else '-' }}</td>
                <td class="small">{{ log.to_investigator.full_name if log.to_investigator else '-' }}</td>
                <td class="small text-muted">{{ log.location or '-' }}</td>
                <td class="small">{{ log.reason or '-' }}</td>
                <td class="small text-muted">{{ log.timestamp.strftime('%d %b %Y %H:%M') }}</td>
                <td class="small text-muted font-monospace" title="{{ log.digital_signature }}">
                    {{ log.digital_signature[:16] + '...' if log.digital_signature else '-' }}
                </td>
              </tr>
              {% else %}
              <tr><td colspan="8" class="text-center text-muted py-3">No custody events recorded.</td></tr>
              {% endfor %}
            </tbody>
          </table>
        </div>
      </div>
    </div>
  </div>
</div>
{% endblock %}