From c0e90480755bc92b471e01d0a63cdfd658a028f5 Mon Sep 17 00:00:00 2001
From: albertouh <albertouh@unlimiteck.com>
Date: Thu, 18 Jan 2024 12:07:32 +0100
Subject: [PATCH 1/2] execution urls for binder, colab and mineo

---
 nbviewer/app.py                          |  14 +++++++
 nbviewer/providers/base.py               |  18 +++++++++
 nbviewer/providers/github/handlers.py    |  49 ++++++++++++++++++-----
 nbviewer/static/img/icon-colab-color.png | Bin 0 -> 4339 bytes
 nbviewer/static/img/icon-colab.png       | Bin 0 -> 3247 bytes
 nbviewer/static/img/icon-mineo-color.png | Bin 0 -> 14558 bytes
 nbviewer/static/img/icon-mineo.png       | Bin 0 -> 11002 bytes
 nbviewer/static/less/layout.less         |  30 ++++++++++++++
 nbviewer/templates/faq.md                |  11 ++++-
 nbviewer/templates/notebook.html         |  10 ++++-
 nbviewer/tests/test_app.py               |   2 +
 11 files changed, 121 insertions(+), 13 deletions(-)
 create mode 100644 nbviewer/static/img/icon-colab-color.png
 create mode 100644 nbviewer/static/img/icon-colab.png
 create mode 100644 nbviewer/static/img/icon-mineo-color.png
 create mode 100644 nbviewer/static/img/icon-mineo.png

diff --git a/nbviewer/app.py b/nbviewer/app.py
index 5e8b05a4..f5214fe2 100644
--- a/nbviewer/app.py
+++ b/nbviewer/app.py
@@ -89,6 +89,8 @@ class NBViewer(Application):
         {
             "base-url": "NBViewer.base_url",
             "binder-base-url": "NBViewer.binder_base_url",
+            "colab-base-url": "NBViewer.colab_base_url",
+            "mineo-base-url": "NBViewer.mineo_base_url",
             "cache-expiry-max": "NBViewer.cache_expiry_max",
             "cache-expiry-min": "NBViewer.cache_expiry_min",
             "config-file": "NBViewer.config_file",
@@ -221,6 +223,16 @@ class NBViewer(Application):
         help="URL base for binder notebook execution service.",
     ).tag(config=True)
 
+    colab_base_url = Unicode(
+        default_value="https://colab.research.google.com",
+        help="URL base for colab notebook execution service.",
+    ).tag(config=True)
+
+    mineo_base_url = Unicode(
+        default_value="https://b.mineo.app",
+        help="URL base for mineo notebook execution service.",
+    ).tag(config=True)
+
     cache_expiry_max = Int(
         default_value=2 * 60 * 60, help="Maximum cache expiry (seconds)."
     ).tag(config=True)
@@ -662,6 +674,8 @@ def init_tornado_application(self):
             allow_remote_access=True,
             base_url=self._base_url,
             binder_base_url=self.binder_base_url,
+            colab_base_url=self.colab_base_url,
+            mineo_base_url=self.mineo_base_url,
             cache=self.cache,
             cache_expiry_max=self.cache_expiry_max,
             cache_expiry_min=self.cache_expiry_min,
diff --git a/nbviewer/providers/base.py b/nbviewer/providers/base.py
index 032fb456..326e9bf4 100644
--- a/nbviewer/providers/base.py
+++ b/nbviewer/providers/base.py
@@ -139,6 +139,14 @@ def base_url(self):
     def binder_base_url(self):
         return self.settings["binder_base_url"]
 
+    @property
+    def colab_base_url(self):
+        return self.settings["colab_base_url"]
+
+    @property
+    def mineo_base_url(self):
+        return self.settings["mineo_base_url"]
+
     @property
     def cache(self):
         return self.settings["cache"]
@@ -664,11 +672,21 @@ def deliver_notebook(self, **kwargs):
     def render_notebook_template(
         self, body, nb, download_url, json_notebook, **namespace
     ):
+        executor_mineo_url = (
+                "{mineo_base_url}/import/{notebook_url}".format(
+                mineo_base_url=self.mineo_base_url,
+                notebook_url=download_url
+            )
+            if self.mineo_base_url
+            else None
+        )
+
         return self.render_template(
             "formats/%s.html" % self.format,
             body=body,
             nb=nb,
             download_url=download_url,
+            executor_mineo_url=executor_mineo_url,
             format=self.format,
             default_format=self.default_format,
             format_prefix=format_prefix,
diff --git a/nbviewer/providers/github/handlers.py b/nbviewer/providers/github/handlers.py
index cf34ebf3..70057227 100644
--- a/nbviewer/providers/github/handlers.py
+++ b/nbviewer/providers/github/handlers.py
@@ -41,13 +41,18 @@ class GithubClientMixin:
     PROVIDER_CTX = {
         "provider_label": "GitHub",
         "provider_icon": "github",
-        "executor_label": "Binder",
-        "executor_icon": "icon-binder",
+        "executor_label_binder": "Binder",
+        "executor_icon_binder": "icon-binder",
+        "executor_label_colab": "Colab",
+        "executor_icon_colab": "icon-colab",
     }
 
     BINDER_TMPL = "{binder_base_url}/gh/{org}/{repo}/{ref}"
     BINDER_PATH_TMPL = BINDER_TMPL + "?filepath={path}"
 
+    COLAB_TMPL = "{colab_base_url}/github/{org}/{repo}/blob/{ref}"
+    COLAB_PATH_TMPL = COLAB_TMPL + "/{path}"
+
     @property
     def github_url(self):
         if getattr(self, "_github_url", None) is None:
@@ -169,7 +174,8 @@ def render_treelist_template(
         path,
         branches,
         tags,
-        executor_url,
+        executor_url_binder,
+        executor_url_colab,
         **namespace,
     ):
         """
@@ -177,8 +183,10 @@ def render_treelist_template(
             Breadcrumb 'name' and 'url' to render as links at the top of the notebook page
         provider_url: str
             URL to the notebook document upstream at the provider (e.g., GitHub)
-        executor_url: str, optional
-            URL to execute the notebook document (e.g., Binder)
+        executor_url_binder: str, optional
+            URL to execute the notebook document with Binder
+        executor_url_colab: str, optional
+            URL to execute the notebook document withe Colab
         """
         return self.render_template(
             "treelist.html",
@@ -193,7 +201,8 @@ def render_treelist_template(
             tags=tags,
             tree_type="github",
             tree_label="repositories",
-            executor_url=executor_url,
+            executor_url_binder=executor_url_binder,
+            executor_url_colab=executor_url_colab,
             **self.PROVIDER_CTX,
             **namespace,
         )
@@ -308,13 +317,20 @@ async def get(self, user: str, repo: str, ref: str, path: str):
         entries.extend(others)
 
         # Enable a binder navbar icon if a binder base URL is configured
-        executor_url = (
+        executor_url_binder = (
             self.BINDER_TMPL.format(
                 binder_base_url=self.binder_base_url, org=user, repo=repo, ref=ref
             )
             if self.binder_base_url
             else None
         )
+        executor_url_colab = (
+            self.COLAB_PATH_TMPL.format(
+                colab_base_url=self.colab_base_url, org=user, repo=repo, ref=ref
+            )
+            if self.colab_base_url
+            else None
+        )
 
         html = self.render_treelist_template(
             entries=entries,
@@ -326,7 +342,8 @@ async def get(self, user: str, repo: str, ref: str, path: str):
             path=path,
             branches=branches,
             tags=tags,
-            executor_url=executor_url,
+            executor_url_binder=executor_url_binder,
+            executor_url_colab=executor_url_colab,
         )
         await self.cache_and_finish(html)
 
@@ -414,7 +431,7 @@ async def deliver_notebook(
             breadcrumbs.extend(self.breadcrumbs(dir_path, base_url))
 
             # Enable a binder navbar icon if a binder base URL is configured
-            executor_url = (
+            executor_url_binder = (
                 self.BINDER_PATH_TMPL.format(
                     binder_base_url=self.binder_base_url,
                     org=user,
@@ -425,6 +442,17 @@ async def deliver_notebook(
                 if self.binder_base_url
                 else None
             )
+            executor_url_colab = (
+                self.COLAB_PATH_TMPL.format(
+                    colab_base_url=self.colab_base_url,
+                    org=user,
+                    repo=repo,
+                    ref=ref,
+                    path=quote(path),
+                )
+                if self.binder_base_url
+                else None
+            )
 
             try:
                 # filedata may be bytes, but we need text
@@ -447,7 +475,8 @@ async def deliver_notebook(
                 nbjson,
                 raw_url,
                 provider_url=blob_url,
-                executor_url=executor_url,
+                executor_url_binder=executor_url_binder,
+                executor_url_colab=executor_url_colab,
                 breadcrumbs=breadcrumbs,
                 msg="file from GitHub: %s" % raw_url,
                 public=True,
diff --git a/nbviewer/static/img/icon-colab-color.png b/nbviewer/static/img/icon-colab-color.png
new file mode 100644
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diff --git a/nbviewer/static/img/icon-colab.png b/nbviewer/static/img/icon-colab.png
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literal 0
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diff --git a/nbviewer/static/less/layout.less b/nbviewer/static/less/layout.less
index e07cb084..8885a9f7 100644
--- a/nbviewer/static/less/layout.less
+++ b/nbviewer/static/less/layout.less
@@ -81,3 +81,33 @@ td.page_links {
     background-image: url(../img/icon-binder-color.png);
   }
 }
+
+// colab icon
+.fa-icon-colab {
+  width: 24px;
+  height: 24px;
+  margin-top: -8px;
+  background-image: url(../img/icon-colab.png);
+  background-repeat: no-repeat;
+  background-position: center right;
+  background-size: 24px;
+  &:hover, &.active {
+    &:extend(.fa-icon-colab);
+    background-image: url(../img/icon-colab-color.png);
+  }
+}
+
+// mineo icon
+.fa-icon-mineo {
+  width: 24px;
+  height: 24px;
+  margin-top: -8px;
+  background-image: url(../img/icon-mineo.png);
+  background-repeat: no-repeat;
+  background-position: center right;
+  background-size: 24px;
+  &:hover, &.active {
+    &:extend(.fa-icon-mineo);
+    background-image: url(../img/icon-mineo-color.png);
+  }
+}
diff --git a/nbviewer/templates/faq.md b/nbviewer/templates/faq.md
index 5d9891f7..ed20b025 100644
--- a/nbviewer/templates/faq.md
+++ b/nbviewer/templates/faq.md
@@ -53,7 +53,16 @@ saved in a notebook document as a web page.
 [mybinder.org](https://mybinder.org/) is a separate web service that lets you
 open notebooks in an executable environment, making your code
 immediately reproducible by anyone, anywhere. nbviewer shows an *Execute on
-Binder* icon in its navbar which
+Binder* icon in its navbar
+
+[Google Colab](https://colab.research.google.com/) offers a cloud environment
+for editing, running, and sharing notebooks. nbviewer includes an
+*Execute on Colab* icon in its navbar.
+
+[mneo.app](https://mineo.app/) is another cloud platform for running and sharing
+notebooks with Code, No-code & AI capabilities.
+nbviewer features an *Execute on Mineo* icon in its navbar.
+
 
 ## Why does the Execute on Binder button not appear for a notebook?
 
diff --git a/nbviewer/templates/notebook.html b/nbviewer/templates/notebook.html
index f7c03663..d6ff5cd2 100644
--- a/nbviewer/templates/notebook.html
+++ b/nbviewer/templates/notebook.html
@@ -22,10 +22,16 @@
     {{ layout.head_icon(provider_url, "View on " + provider_label, provider_icon) }}
   {% endif %}
 
-  {% if executor_url %}
-    {{ layout.head_icon(executor_url, "Execute on " + executor_label, executor_icon) }}
+  {% if executor_url_binder %}
+    {{ layout.head_icon(executor_url_binder, "Execute on " + executor_label_binder, executor_icon_binder) }}
   {% endif %}
 
+  {% if executor_url_colab %}
+    {{ layout.head_icon(executor_url_colab, "Execute on " + executor_label_colab, executor_icon_colab) }}
+  {% endif %}
+
+  {{ head_icon(executor_mineo_url, "Execute on MINEO", "icon-mineo") }}
+
   {{ layout.head_icon(download_url, "Download Notebook", "download", True) }}
 {% endblock %}
 
diff --git a/nbviewer/tests/test_app.py b/nbviewer/tests/test_app.py
index 92ba8195..6fd1eab6 100644
--- a/nbviewer/tests/test_app.py
+++ b/nbviewer/tests/test_app.py
@@ -51,6 +51,8 @@ def test_generate_config():
     assert "NBViewer.base_url" in cfg_text
     assert "NBViewer._base_url" not in cfg_text  # This shouldn't be configurable
     assert "NBViewer.binder_base_url" in cfg_text
+    assert "NBViewer.colab_base_url" in cfg_text
+    assert "NBViewer.mineo_base_url" in cfg_text
     assert "NBViewer.cache_expiry_max" in cfg_text
     assert "NBViewer.cache_expiry_min" in cfg_text
     assert "NBViewer.client" in cfg_text

From 07aa8bbf8521f2caf5838969719d1751fde0cf66 Mon Sep 17 00:00:00 2001
From: albertouh <albertouh@unlimiteck.com>
Date: Thu, 18 Jan 2024 16:09:46 +0100
Subject: [PATCH 2/2] code format

---
 nbviewer/providers/base.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/nbviewer/providers/base.py b/nbviewer/providers/base.py
index 326e9bf4..9f047af3 100644
--- a/nbviewer/providers/base.py
+++ b/nbviewer/providers/base.py
@@ -673,9 +673,8 @@ def render_notebook_template(
         self, body, nb, download_url, json_notebook, **namespace
     ):
         executor_mineo_url = (
-                "{mineo_base_url}/import/{notebook_url}".format(
-                mineo_base_url=self.mineo_base_url,
-                notebook_url=download_url
+            "{mineo_base_url}/import/{notebook_url}".format(
+                mineo_base_url=self.mineo_base_url, notebook_url=download_url
             )
             if self.mineo_base_url
             else None