Doc updates

README.md

@@ -14,6 +14,8 @@
 [license]: https://github.com/{{cookiecutter.github_user}}/{{cookiecutter.project_name}}/blob/main/LICENSE
 [coveralls]: https://coveralls.io/github/coordt/cookie-composer?branch=master
 
+https://coordt.github.io/cookie-composer/
+
 <!-- end-badges -->
 
 Cookie composer builds on the [cookie cutter](https://github.com/cookiecutter/cookiecutter) project to generate projects based on one or more cookiecutter templates.
@@ -24,6 +26,52 @@ Cookie composer builds on the [cookie cutter](https://github.com/cookiecutter/co
 - Add new capabilities to an existing repository by applying a template
 - Apply template updates to the generated project
 
+## Introduction
+
+Cookie Cutter treats templates like sandwiches. There are templates for hamburgers, clubs, and any other kind of sandwich you can dream up. You might have options and defaults on a template, like `Hold the mustard?[False]:` or `Mustard type [dijon]:`, but those are decided by the template author. 
+
+
+<img src="https://raw.githubusercontent.com/coordt/cookie-composer/master/docsrc/_static/img/sandwiches.png" alt="Templates are treated like finished sandwiches" style="zoom:50%;" />
+
+If you look closely at the sandwiches (templates), there is usually many things in common. What if we treated the templates as compositions of other templates:
+
+<img src="https://raw.githubusercontent.com/coordt/cookie-composer/master/docsrc/_static/img/compositions.png" alt="Sandwiches as a composition of layers" style="zoom:50%;" />
+
+You now can manage several smaller and specialized templates that provide functionality. Each template's options will be specific to what that template needs.
+
+<img src="https://raw.githubusercontent.com/coordt/cookie-composer/master/docsrc/_static/img/layers.png" alt="Templates broken out as layers on a sandwich" style="zoom:50%;" />
+
+Cookie Composer uses a composition file to describe the layers required, and even override a template's default answers.
+
+```yaml
+template: bottom-bun
+context:
+  toasting_level: light
+  buttered: False
+---
+template: burger
+---
+template: cheese
+context:
+  kind: swiss
+---
+template: bacon
+context:
+  cooking_level: crispy
+---
+template: ketchup
+---
+template: mustard
+context:
+  type: yellow
+---
+template: top-bun
+context:
+  toasting_level: light
+  buttered: False
+```
+
+We have created [a repo of highly composable templates](https://github.com/coordt/cookiecomposer-templates) as examples or reference. However, Cookie Composer is designed to handle any Cookie Cutter template.
 
 ## Purpose
 

cookie_composer/cc_overrides.py

@@ -146,6 +146,6 @@ def prompt_for_config(prompts: dict, existing_config: Context, no_input=False) -
                 context[key] = val
         except UndefinedError as err:
             msg = f"Unable to render variable '{key}'"
-            raise UndefinedVariableInTemplate(msg, err, context)
+            raise UndefinedVariableInTemplate(msg, err, context) from err
 
     return context

cookie_composer/cli.py

@@ -23,26 +23,120 @@ def cli():
 
 @cli.command()
 @click_log.simple_verbosity_option(logger)
+@click.option(
+    "--no-input",
+    is_flag=True,
+    help="Do not prompt for parameters and only use cookiecutter.json file content. "
+    "Defaults to deleting any cached resources and redownloading them.",
+)
+@click.option(
+    "-c",
+    "--checkout",
+    help="branch, tag or commit to checkout after git clone",
+)
+@click.option(
+    "--directory",
+    help="Directory within repo that holds cookiecutter.json file "
+    "for advanced repositories with multi templates in it",
+)
+@click.option(
+    "-f",
+    "--overwrite-if-exists",
+    is_flag=True,
+    help="Overwrite the contents of the output directory if it already exists",
+)
+@click.option(
+    "-s",
+    "--skip-if-file-exists",
+    is_flag=True,
+    help="Skip the files in the corresponding directories if they already exist",
+    default=False,
+)
+@click.option(
+    "--default-config",
+    is_flag=True,
+    help="Do not load a config file. Use the defaults instead",
+)
 @click.argument("path_or_url", type=str, required=True)
 @click.argument(
     "output_dir",
     required=False,
     default=lambda: Path.cwd(),
     type=click.Path(exists=True, dir_okay=True, file_okay=False, resolve_path=True),
 )
-def create(path_or_url: str, output_dir: Optional[Path]):
+def create(
+    no_input: bool,
+    checkout: str,
+    directory: str,
+    overwrite_if_exists: bool,
+    skip_if_file_exists: bool,
+    default_config: bool,
+    path_or_url: str,
+    output_dir: Optional[Path],
+):
     """Create a project from a template or configuration."""
-    create_cmd(path_or_url, output_dir)
+    create_cmd(
+        path_or_url,
+        output_dir,
+        no_input,
+        checkout,
+        directory,
+        overwrite_if_exists,
+        skip_if_file_exists,
+        default_config,
+    )
 
 
 @cli.command()
 @click_log.simple_verbosity_option(logger)
-@click.option("--no-input", is_flag=True)
-@click.argument("path_or_url", type=str, required=True)
+@click.option(
+    "--no-input",
+    is_flag=True,
+    help="Do not prompt for parameters and only use cookiecutter.json file content. "
+    "Defaults to deleting any cached resources and redownloading them.",
+)
+@click.option(
+    "-c",
+    "--checkout",
+    help="branch, tag or commit to checkout after git clone",
+)
+@click.option(
+    "--directory",
+    help="Directory within repo that holds cookiecutter.json file "
+    "for advanced repositories with multi templates in it",
+)
+@click.option(
+    "-f",
+    "--overwrite-if-exists",
+    is_flag=True,
+    help="Overwrite the contents of the output directory if it already exists",
+)
+@click.option(
+    "-s",
+    "--skip-if-file-exists",
+    is_flag=True,
+    help="Skip the files in the corresponding directories if they already exist",
+    default=False,
+)
+@click.option(
+    "--default-config",
+    is_flag=True,
+    help="Do not load a config file. Use the defaults instead",
+)
+@click.argument("path_or_url", type=str, required=True, help="The template or composition path or URL")
 @click.argument(
     "destination", required=False, type=click.Path(exists=True, file_okay=False, writable=True, path_type=Path)
 )
-def add(no_input: bool, path_or_url: str, destination: Optional[Path]):
+def add(
+    no_input: bool,
+    checkout: str,
+    directory: str,
+    overwrite_if_exists: bool,
+    skip_if_file_exists: bool,
+    default_config: bool,
+    path_or_url: str,
+    destination: Optional[Path],
+):
     """Add a template or configuration to an existing project."""
     destination = destination or Path(".")
     try:

cookie_composer/commands/add.py

@@ -29,6 +29,11 @@ def add_cmd(
     path_or_url: str,
     destination_dir: Optional[Path] = None,
     no_input: bool = False,
+    checkout: Optional[str] = None,
+    directory: Optional[str] = None,
+    overwrite_if_exists: bool = False,
+    skip_if_file_exists: bool = False,
+    default_config: bool = False,
 ):
     """
     Add a template or configuration to an existing project.
@@ -37,6 +42,11 @@ def add_cmd(
         path_or_url: A URL or string to add the template or configuration
         destination_dir: The project directory to add the layer to
         no_input: If ``True`` force each layer's ``no_input`` attribute to ``True``
+        checkout: The branch, tag or commit to check out after git clone
+        directory: Directory within repo that holds cookiecutter.json file
+        overwrite_if_exists: Overwrite the contents of the output directory if it already exists
+        skip_if_file_exists: Skip the files in the corresponding directories if they already exist
+        default_config: Do not load a config file. Use the defaults instead
 
     Raises:
         GitError: If the destination_dir is not a git repository
@@ -57,7 +67,15 @@ def add_cmd(
         addl_composition = read_composition(path_or_url)
         logger.info(f"Adding composition {path_or_url} to {output_dir}.")
     else:
-        tmpl = LayerConfig(template=path_or_url)
+        overwrite_rules = ["*"] if overwrite_if_exists else []
+        tmpl = LayerConfig(
+            template=path_or_url,
+            directory=directory,
+            checkout=checkout,
+            no_input=no_input or default_config,
+            skip_if_file_exists=skip_if_file_exists,
+            overwrite=overwrite_rules,
+        )
         addl_composition = Composition(layers=[tmpl])
         logger.info(f"Adding template {path_or_url} to {output_dir}.")
 

cookie_composer/commands/create.py

@@ -22,6 +22,11 @@ def create_cmd(
     path_or_url: str,
     output_dir: Optional[Path] = None,
     no_input: bool = False,
+    checkout: Optional[str] = None,
+    directory: Optional[str] = None,
+    overwrite_if_exists: bool = False,
+    skip_if_file_exists: bool = False,
+    default_config: bool = False,
 ) -> Path:
     """
     Generate a new project from a composition file, local template or remote template.
@@ -30,6 +35,11 @@ def create_cmd(
         path_or_url: The path or url to the composition file or template
         output_dir: Where to generate the project
         no_input: If ``True`` force each layer's ``no_input`` attribute to ``True``
+        checkout: The branch, tag or commit to check out after git clone
+        directory: Directory within repo that holds cookiecutter.json file
+        overwrite_if_exists: Overwrite the contents of the output directory if it already exists
+        skip_if_file_exists: Skip the files in the corresponding directories if they already exist
+        default_config: Do not load a config file. Use the defaults instead
 
     Returns:
         The path to the generated project.
@@ -39,8 +49,16 @@ def create_cmd(
         composition = read_composition(path_or_url)
         logger.info(f"Rendering composition {path_or_url} to {output_dir}.")
     else:
-        tmpl = LayerConfig(template=path_or_url)
-        composition = Composition(layers=[tmpl], destination=output_dir)
+        overwrite_rules = ["*"] if overwrite_if_exists else []
+        tmpl = LayerConfig(
+            template=path_or_url,
+            directory=directory,
+            checkout=checkout,
+            no_input=no_input or default_config,
+            skip_if_file_exists=skip_if_file_exists,
+            overwrite=overwrite_rules,
+        )
+        composition = Composition(layers=[tmpl])
         logger.info(f"Rendering template {path_or_url} to {output_dir}.")
     rendered_layers = render_layers(composition.layers, output_dir, no_input=no_input)
     rendered_composition = RenderedComposition(

cookie_composer/composition.py

@@ -249,7 +249,7 @@ def write_composition(layers: List[LayerConfig], destination: Union[str, Path]):
 
 def write_rendered_composition(composition: RenderedComposition):
     """
-    Write the composition file using the rendered layers to the appropriate.
+    Write the composition file using the rendered layers to the appropriate place.
 
     Args:
         composition: The rendered composition object to export

docsrc/_static/css/custom.css

@@ -1,4 +1,4 @@
-.sig-prename.descclassname {
+dt.sig.py > .sig-prename.descclassname {
   display: none;
 }
 .subheading {

docsrc/cli.rst

@@ -2,5 +2,5 @@ Command-line Interface
 ======================
 
 .. click:: cookie_composer.cli:cli
-   :prog: cookie_composer
+   :prog: cookie-composer
    :nested: full

docsrc/conf.py

@@ -65,8 +65,31 @@
 
 # -- Options for HTML output -------------------------------------------
 
+html_title = "Cookie Composer"
+html_logo = "_static/img/composer-logo.svg"
 html_theme = "furo"
 html_static_path = ["_static"]
 html_css_files = [
     "css/custom.css",
 ]
+html_theme_options = {
+    "top_of_page_button": "edit",
+    "navigation_with_keys": True,
+    "footer_icons": [
+        {
+            "name": "GitHub",
+            "url": "https://github.com/coordt/cookie-composer",
+            "html": '<svg stroke="currentColor" fill="currentColor" stroke-width="0" viewBox="0 0 16 16">'
+            '<path fill-rule="evenodd" d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 '
+            "7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-"
+            ".23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 "
+            "1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 "
+            "0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 "
+            "2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 "
+            "1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 "
+            '2.2 0 .21.15.46.55.38A8.013 8.013 0 0 0 16 8c0-4.42-3.58-8-8-8z"></path>'
+            "</svg>",
+            "class": "",
+        },
+    ],
+}