Added Discovery UI

src/repo_registry/web_ui/views.py

@@ -3,8 +3,8 @@ from __future__ import annotations
 from dataclasses import asdict
 from html import escape
 
-from fastapi import APIRouter, Depends, Form, HTTPException
-from fastapi.responses import HTMLResponse, RedirectResponse
+from fastapi import APIRouter, Depends, Form, HTTPException, Query
+from fastapi.responses import HTMLResponse, PlainTextResponse, RedirectResponse
 
 from repo_registry.core.service import RegistryService
 from repo_registry.storage.sqlite import NotFoundError
@@ -127,6 +127,7 @@ def page(title: str, body: str) -> HTMLResponse:
               <a href="/ui"><strong>Repository Ability Registry</strong></a>
               <nav class="actions">
                 <a href="/ui/search">Search</a>
+                <a href="/ui/discovery">Discovery</a>
                 <a href="/docs">API Docs</a>
               </nav>
             </header>
@@ -163,7 +164,10 @@ def repository_index(service: RegistryService = Depends(get_service)) -> HTMLRes
         </form>
       </section>
       <section class="panel">
-        <h2>Registry</h2>
+        <div class="actions">
+          <h2 style="margin-right:auto">Registry</h2>
+          <a class="button secondary" href="/ui/discovery">Discovery</a>
+        </div>
         <table>
           <thead><tr><th>Name</th><th>Status</th><th>Branch</th><th>Source</th></tr></thead>
           <tbody>{rows or '<tr><td colspan="4" class="muted">No repositories yet.</td></tr>'}</tbody>
@@ -174,6 +178,110 @@ def repository_index(service: RegistryService = Depends(get_service)) -> HTMLRes
     return page("Repositories", body)
 
 
+@router.get("/ui/discovery")
+def discovery_page(service: RegistryService = Depends(get_service)) -> HTMLResponse:
+    repositories = service.list_repositories()
+    return page(
+        "Discovery",
+        f"""
+        <div class="actions">
+          <h1 style="margin-right:auto">Discovery</h1>
+          <a class="button secondary" href="/ui">Repositories</a>
+        </div>
+        <div class="grid">
+          <section class="panel">
+            <h2>Compare Repositories</h2>
+            <form class="stack" method="get" action="/ui/discovery/compare">
+              {render_repository_checkbox_list(service, repositories)}
+              <button type="submit">Compare</button>
+            </form>
+          </section>
+          <section class="panel">
+            <h2>Capability Gap Report</h2>
+            <form class="stack" method="post" action="/ui/discovery/gaps">
+              <label>Desired ability <input name="desired_ability" required></label>
+              <label>Desired capabilities <textarea name="desired_capabilities" rows="7" placeholder="One capability per line or comma-separated" required></textarea></label>
+              {render_repository_checkbox_list(service, repositories)}
+              <button type="submit">Run Gap Report</button>
+            </form>
+          </section>
+        </div>
+        """,
+    )
+
+
+@router.get("/ui/discovery/compare")
+def discovery_compare_page(
+    repository_ids: list[int] = Query(default=[]),
+    service: RegistryService = Depends(get_service),
+) -> HTMLResponse:
+    if len(repository_ids) < 2:
+        return page(
+            "Repository Comparison",
+            """
+            <div class="actions">
+              <h1 style="margin-right:auto">Repository Comparison</h1>
+              <a class="button secondary" href="/ui/discovery">Discovery</a>
+            </div>
+            <section class="panel">
+              <p class="muted">Select at least two repositories with approved profiles.</p>
+            </section>
+            """,
+        )
+    try:
+        comparison = service.compare_repositories(repository_ids)
+    except NotFoundError as exc:
+        raise HTTPException(status_code=404, detail=str(exc)) from exc
+    body = f"""
+    <div class="actions">
+      <h1 style="margin-right:auto">Repository Comparison</h1>
+      <a class="button secondary" href="/ui/discovery">Discovery</a>
+    </div>
+    <section class="panel">
+      <h2>Compared Repositories</h2>
+      {render_compared_repositories(comparison["repositories"])}
+    </section>
+    <section class="panel" style="margin-top:18px">
+      <h2>Shared Abilities</h2>
+      {render_compared_abilities(comparison["abilities"])}
+    </section>
+    <section class="panel" style="margin-top:18px">
+      <h2>Unique Capabilities</h2>
+      {render_unique_capabilities(comparison["unique_capabilities"])}
+    </section>
+    """
+    return page("Repository Comparison", body)
+
+
+@router.post("/ui/discovery/gaps")
+def discovery_gap_report_page(
+    desired_ability: str = Form(...),
+    desired_capabilities: str = Form(...),
+    repository_ids: list[int] = Form(default=[]),
+    service: RegistryService = Depends(get_service),
+) -> HTMLResponse:
+    capabilities = split_capability_lines(desired_capabilities)
+    try:
+        report = service.detect_capability_gaps(
+            desired_ability=desired_ability,
+            desired_capabilities=capabilities,
+            repository_ids=repository_ids or None,
+        )
+    except NotFoundError as exc:
+        raise HTTPException(status_code=404, detail=str(exc)) from exc
+    body = f"""
+    <div class="actions">
+      <h1 style="margin-right:auto">Capability Gap Report</h1>
+      <a class="button secondary" href="/ui/discovery">Discovery</a>
+    </div>
+    <section class="panel">
+      <h2>{escape(report["desired_ability"])}</h2>
+      {render_gap_report(report)}
+    </section>
+    """
+    return page("Capability Gap Report", body)
+
+
 @router.get("/ui/search")
 def search_page(
     q: str = "",
@@ -290,6 +398,7 @@ def repository_detail(
     body = f"""
     <div class="actions">
       <h1 style="margin-right:auto">{escape(repository.name)}</h1>
+      <a class="button secondary" href="/ui/repos/{repository_id}/export">Export</a>
       <a class="button secondary" href="/ui">Back</a>
     </div>
     <p class="muted">{escape(repository.description or '')}</p>
@@ -374,6 +483,18 @@ def repository_detail(
     return page(repository.name, body)
 
 
+@router.get("/ui/repos/{repository_id}/export")
+def export_repository_from_ui(
+    repository_id: int,
+    service: RegistryService = Depends(get_service),
+) -> PlainTextResponse:
+    try:
+        content = service.export_registry_entry(repository_id)
+    except NotFoundError as exc:
+        raise HTTPException(status_code=404, detail=str(exc)) from exc
+    return PlainTextResponse(content, media_type="application/x-yaml")
+
+
 @router.post("/ui/repos/{repository_id}/edit")
 def edit_repository_from_form(
     repository_id: int,
@@ -1156,6 +1277,200 @@ def render_diff_payload(payload: dict | None) -> str:
     return "".join(parts) or '<span class="muted">No display fields.</span>'
 
 
+def render_repository_checkbox_list(
+    service: RegistryService,
+    repositories: list,
+) -> str:
+    if not repositories:
+        return '<p class="muted">No repositories registered.</p>'
+    rows = []
+    for repository in repositories:
+        ability_map = service.ability_map(repository.id)
+        approved_count = len(ability_map.abilities)
+        disabled = " disabled" if approved_count == 0 else ""
+        status = (
+            f"{approved_count} approved "
+            f"{'ability' if approved_count == 1 else 'abilities'}"
+            if approved_count
+            else "No approved profile"
+        )
+        rows.append(
+            f"""
+            <label>
+              <span>
+                <input style="width:auto" type="checkbox" name="repository_ids" value="{repository.id}"{disabled}>
+                {escape(repository.name)}
+              </span>
+              <span class="muted">{escape(status)}</span>
+            </label>
+            """
+        )
+    return f'<div class="stack">{"".join(rows)}</div>'
+
+
+def render_compared_repositories(repositories: list[dict]) -> str:
+    if not repositories:
+        return '<p class="muted">No repositories selected.</p>'
+    rows = "\n".join(
+        f"""
+        <tr>
+          <td><a href="/ui/repos/{repository['id']}">{escape(repository['name'])}</a></td>
+          <td><span class="pill">{escape(repository['status'])}</span></td>
+          <td class="source">{escape(repository['branch'])}</td>
+        </tr>
+        """
+        for repository in repositories
+    )
+    return f"""
+    <table>
+      <thead><tr><th>Name</th><th>Status</th><th>Branch</th></tr></thead>
+      <tbody>{rows}</tbody>
+    </table>
+    """
+
+
+def render_compared_abilities(abilities: list[dict]) -> str:
+    if not abilities:
+        return '<p class="muted">No shared approved abilities.</p>'
+    rows = []
+    for ability in abilities:
+        repositories = "".join(
+            f"""
+            <li>
+              <strong>{escape(repository['repository_name'])}</strong>
+              <span class="pill">{repository['confidence']:.2f} {escape(repository['confidence_label'])}</span>
+              {render_compared_capability_pills(repository['capabilities'])}
+            </li>
+            """
+            for repository in ability["repositories"]
+        )
+        rows.append(
+            f"""
+            <li>
+              <strong>{escape(ability['name'])}</strong>
+              <ul>{repositories}</ul>
+            </li>
+            """
+        )
+    return f'<div class="tree"><ul>{"".join(rows)}</ul></div>'
+
+
+def render_compared_capability_pills(capabilities: list[dict]) -> str:
+    if not capabilities:
+        return ""
+    return " ".join(
+        f'<span class="pill">{escape(capability["name"])} · {capability["evidence_count"]} evidence</span>'
+        for capability in capabilities
+    )
+
+
+def render_unique_capabilities(capabilities: list[dict]) -> str:
+    if not capabilities:
+        return '<p class="muted">No unique approved capabilities.</p>'
+    rows = "\n".join(
+        f"""
+        <tr>
+          <td><a href="/ui/repos/{capability['repository_id']}">{escape(capability['repository_name'])}</a></td>
+          <td>{escape(capability['ability_name'])}</td>
+          <td><strong>{escape(capability['capability_name'])}</strong></td>
+        </tr>
+        """
+        for capability in capabilities
+    )
+    return f"""
+    <table>
+      <thead><tr><th>Repository</th><th>Ability</th><th>Capability</th></tr></thead>
+      <tbody>{rows}</tbody>
+    </table>
+    """
+
+
+def render_gap_report(report: dict) -> str:
+    return f"""
+    <div class="grid">
+      <section>
+        <h3>Matched</h3>
+        {render_gap_matches(report["matched_capabilities"])}
+      </section>
+      <section>
+        <h3>Missing</h3>
+        {render_gap_list(report["missing_capabilities"], "No missing capabilities.")}
+      </section>
+      <section>
+        <h3>Weak Evidence</h3>
+        {render_weak_evidence(report["weakly_evidenced_capabilities"])}
+      </section>
+      <section>
+        <h3>Duplicates</h3>
+        {render_duplicate_capabilities(report["duplicate_capabilities"])}
+      </section>
+    </div>
+    """
+
+
+def render_gap_matches(matches: list[dict]) -> str:
+    if not matches:
+        return '<p class="muted">No desired capabilities matched.</p>'
+    rows = "\n".join(
+        f"""
+        <tr>
+          <td><strong>{escape(match['capability'])}</strong></td>
+          <td>{escape(', '.join(match['repositories']))}</td>
+        </tr>
+        """
+        for match in matches
+    )
+    return f"<table><tbody>{rows}</tbody></table>"
+
+
+def render_gap_list(values: list[str], empty: str) -> str:
+    if not values:
+        return f'<p class="muted">{escape(empty)}</p>'
+    return "<ul>" + "".join(f"<li>{escape(value)}</li>" for value in values) + "</ul>"
+
+
+def render_weak_evidence(items: list[dict]) -> str:
+    if not items:
+        return '<p class="muted">No weak evidence flags.</p>'
+    rows = "\n".join(
+        f"""
+        <tr>
+          <td>{escape(item['capability'])}</td>
+          <td>{escape(item['repository_name'])}</td>
+          <td>{escape(str(item['strongest_evidence'] or 'none'))}</td>
+          <td>{item['confidence']:.2f} <span class="pill">{escape(item['confidence_label'])}</span></td>
+        </tr>
+        """
+        for item in items
+    )
+    return f"""
+    <table>
+      <thead><tr><th>Capability</th><th>Repository</th><th>Evidence</th><th>Confidence</th></tr></thead>
+      <tbody>{rows}</tbody>
+    </table>
+    """
+
+
+def render_duplicate_capabilities(items: list[dict]) -> str:
+    if not items:
+        return '<p class="muted">No duplicate capabilities.</p>'
+    rows = "\n".join(
+        f"""
+        <tr>
+          <td>{escape(item['capability'])}</td>
+          <td>{escape(', '.join(item['repositories']))}</td>
+        </tr>
+        """
+        for item in items
+    )
+    return f"<table><tbody>{rows}</tbody></table>"
+
+
+def split_capability_lines(value: str) -> list[str]:
+    normalized = value.replace(",", "\n")
+    return [line.strip() for line in normalized.splitlines() if line.strip()]
+
+
 def render_candidate_graph(graph: dict, repository_id: int, analysis_run_id: int) -> str:
     abilities = graph.get("abilities", [])
     if not abilities: