commit c16a1e6d7e0a5d0dd2f1d92926154ab9faa092a6
Author: Aaron Axvig <aaron@axvigs.com>
Date:   Fri Jan 23 21:52:25 2026 -0600

    Initial commit of archive_tree module

diff --git a/archive_tree.info.yml b/archive_tree.info.yml
new file mode 100644
index 0000000..338564a
--- /dev/null
+++ b/archive_tree.info.yml
@@ -0,0 +1,6 @@
+name: Archive tree
+machine_name: archive_tree
+type: module
+description: 'Provides an Archive tree block.'
+core_version_requirement: ^10 || ^11
+package: Custom
diff --git a/archive_tree.libraries.yml b/archive_tree.libraries.yml
new file mode 100644
index 0000000..b6823db
--- /dev/null
+++ b/archive_tree.libraries.yml
@@ -0,0 +1,5 @@
+archive_tree_styles:
+  version: 1.x
+  css:
+    theme:
+      css/archive_tree.css: {}
diff --git a/archive_tree.module b/archive_tree.module
new file mode 100644
index 0000000..b592714
--- /dev/null
+++ b/archive_tree.module
@@ -0,0 +1,2 @@
+<?php
+// Archive tree module file. Required for Drupal module recognition.
diff --git a/config/install/views.view.archive_by_month.yml b/config/install/views.view.archive_by_month.yml
new file mode 100644
index 0000000..dd48141
--- /dev/null
+++ b/config/install/views.view.archive_by_month.yml
@@ -0,0 +1,239 @@
+langcode: en
+status: true
+dependencies:
+  module:
+    - node
+id: archive_by_month
+label: 'Archive by month'
+module: views
+description: 'Lists all content for a given year and month.'
+tag: ''
+base_table: node_field_data
+base_field: nid
+display:
+  default:
+    id: default
+    display_title: Default
+    display_plugin: default
+    position: 0
+    display_options:
+      title: 'Archive by month'
+      fields:
+        title:
+          id: title
+          table: node_field_data
+          field: title
+          relationship: none
+          group_type: group
+          entity_type: node
+          entity_field: title
+          plugin_id: field
+          label: ''
+          exclude: false
+          alter:
+            alter_text: false
+            make_link: true
+            absolute: false
+            word_boundary: false
+            ellipsis: false
+            strip_tags: false
+            trim: false
+            html: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: false
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_empty: false
+          empty_zero: false
+          hide_alter_empty: true
+          click_sort_column: value
+          type: string
+          settings:
+            link_to_entity: true
+          group_column: value
+          group_columns: {  }
+          group_rows: true
+          delta_limit: 0
+          delta_offset: 0
+          delta_reversed: false
+          delta_first_last: false
+          multi_type: separator
+          separator: ', '
+          field_api_classes: false
+      pager:
+        type: mini
+        options:
+          offset: 0
+          pagination_heading_level: h4
+          items_per_page: 10
+          total_pages: null
+          id: 0
+          tags:
+            next: '››'
+            previous: '‹‹'
+          expose:
+            items_per_page: false
+            items_per_page_label: 'Items per page'
+            items_per_page_options: '5, 10, 25, 50'
+            items_per_page_options_all: false
+            items_per_page_options_all_label: '- All -'
+            offset: false
+            offset_label: Offset
+      exposed_form:
+        type: basic
+        options:
+          submit_button: Apply
+          reset_button: false
+          reset_button_label: Reset
+          exposed_sorts_label: 'Sort by'
+          expose_sort_order: true
+          sort_asc_label: Asc
+          sort_desc_label: Desc
+      access:
+        type: perm
+        options:
+          perm: 'access content'
+      cache:
+        type: tag
+        options: {  }
+      empty: {  }
+      sorts:
+        created:
+          id: created
+          table: node_field_data
+          field: created
+          relationship: none
+          group_type: group
+          entity_type: node
+          entity_field: created
+          plugin_id: date
+          order: DESC
+          granularity: second
+      arguments:
+        created_year:
+          id: created_year
+          table: node_field_data
+          field: created_year
+          relationship: none
+          group_type: group
+          entity_type: node
+          plugin_id: date_year
+          default_action: ignore
+          exception:
+            value: all
+            title_enable: false
+            title: All
+          title_enable: false
+          title: ''
+          default_argument_type: fixed
+          default_argument_options:
+            argument: ''
+          summary_options:
+            base_path: ''
+            count: true
+            override: false
+            items_per_page: 25
+          summary:
+            sort_order: asc
+            number_of_records: 0
+            format: default_summary
+          specify_validation: false
+          validate:
+            type: none
+            fail: 'not found'
+          validate_options: {  }
+        created_month:
+          id: created_month
+          table: node_field_data
+          field: created_month
+          relationship: none
+          group_type: group
+          entity_type: node
+          plugin_id: date_month
+          default_action: ignore
+          exception:
+            value: all
+            title_enable: false
+            title: All
+          title_enable: false
+          title: ''
+          default_argument_type: fixed
+          default_argument_options:
+            argument: ''
+          summary_options:
+            base_path: ''
+            count: true
+            override: false
+            items_per_page: 25
+          summary:
+            sort_order: asc
+            number_of_records: 0
+            format: default_summary
+          specify_validation: false
+          validate:
+            type: none
+            fail: 'not found'
+          validate_options: {  }
+      filters:
+        status:
+          id: status
+          table: node_field_data
+          field: status
+          entity_type: node
+          entity_field: status
+          plugin_id: boolean
+          value: '1'
+          group: 1
+          expose:
+            operator: ''
+      style:
+        type: default
+      row:
+        type: 'entity:node'
+        options:
+          view_mode: teaser
+      query:
+        type: views_query
+        options:
+          query_comment: ''
+          disable_sql_rewrite: false
+          distinct: false
+          replica: false
+          query_tags: {  }
+      relationships: {  }
+      header: {  }
+      footer: {  }
+      display_extenders: {  }
+    cache_metadata:
+      max-age: -1
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - url
+        - url.query_args
+        - 'user.node_grants:view'
+        - user.permissions
+      tags: {  }
+  page_1:
+    id: page_1
+    display_title: Page
+    display_plugin: page
+    position: 1
+    display_options:
+      display_extenders: {  }
+      path: archive-tree/%/%
+    cache_metadata:
+      max-age: -1
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - url
+        - url.query_args
+        - 'user.node_grants:view'
+        - user.permissions
+      tags: {  }
diff --git a/config/install/views.view.archive_by_year-ai.yml b/config/install/views.view.archive_by_year-ai.yml
new file mode 100644
index 0000000..f9788cc
--- /dev/null
+++ b/config/install/views.view.archive_by_year-ai.yml
@@ -0,0 +1,67 @@
+langcode: en
+status: true
+dependencies:
+  module:
+    - node
+id: archive_by_year
+label: 'Archive by year'
+description: 'Lists all content for a given year.'
+module: views
+display:
+  page_1:
+    display_plugin: page
+    id: page_1
+    display_title: 'Archive by year'
+    position: 0
+    display_options:
+      path: 'archive-tree/%'
+      arguments:
+        created_year:
+          id: created_year
+          table: node_field_data
+          field: created
+          default_action: empty
+          exception: ''
+          title_enable: true
+          title: 'Archive for year %1'
+          default_argument_type: fixed
+          default_argument_options:
+            argument: ''
+          summary:
+            sort_order: asc
+            number_of_records: 0
+            format: default_summary
+            base_path: ''
+            count: true
+          limit: 0
+          plugin_id: date
+          date_format: 'Y'
+          granularity: year
+      filters:
+        status:
+          id: status
+          table: node_field_data
+          field: status
+          value: '1'
+          provider: node
+      fields:
+        title:
+          id: title
+          table: node_field_data
+          field: title
+          label: 'Title'
+          alter:
+            make_link: true
+            path: 'node/[nid]'
+      sort:
+        created:
+          id: created
+          table: node_field_data
+          field: created
+          order: DESC
+      pager:
+        type: some
+        options:
+          items_per_page: 20
+      style:
+        type: default
diff --git a/config/install/views.view.archive_by_year.yml b/config/install/views.view.archive_by_year.yml
new file mode 100644
index 0000000..bf03a59
--- /dev/null
+++ b/config/install/views.view.archive_by_year.yml
@@ -0,0 +1,210 @@
+langcode: en
+status: true
+dependencies:
+  config:
+    - core.entity_view_mode.node.teaser
+  module:
+    - node
+    - user
+id: archive_by_year
+label: 'Archive by year'
+module: views
+description: 'Lists all content for a given year.'
+tag: ''
+base_table: node_field_data
+base_field: nid
+display:
+  default:
+    id: default
+    display_title: Default
+    display_plugin: default
+    position: 0
+    display_options:
+      title: 'Archive by year'
+      fields:
+        title:
+          id: title
+          table: node_field_data
+          field: title
+          relationship: none
+          group_type: group
+          entity_type: node
+          entity_field: title
+          plugin_id: field
+          label: ''
+          exclude: false
+          alter:
+            alter_text: false
+            make_link: true
+            absolute: false
+            word_boundary: false
+            ellipsis: false
+            strip_tags: false
+            trim: false
+            html: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: false
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_empty: false
+          empty_zero: false
+          hide_alter_empty: true
+          click_sort_column: value
+          type: string
+          settings:
+            link_to_entity: true
+          group_column: value
+          group_columns: {  }
+          group_rows: true
+          delta_limit: 0
+          delta_offset: 0
+          delta_reversed: false
+          delta_first_last: false
+          multi_type: separator
+          separator: ', '
+          field_api_classes: false
+      pager:
+        type: mini
+        options:
+          offset: 0
+          pagination_heading_level: h4
+          items_per_page: 10
+          total_pages: null
+          id: 0
+          tags:
+            next: '››'
+            previous: '‹‹'
+          expose:
+            items_per_page: false
+            items_per_page_label: 'Items per page'
+            items_per_page_options: '5, 10, 25, 50'
+            items_per_page_options_all: false
+            items_per_page_options_all_label: '- All -'
+            offset: false
+            offset_label: Offset
+      exposed_form:
+        type: basic
+        options:
+          submit_button: Apply
+          reset_button: false
+          reset_button_label: Reset
+          exposed_sorts_label: 'Sort by'
+          expose_sort_order: true
+          sort_asc_label: Asc
+          sort_desc_label: Desc
+      access:
+        type: perm
+        options:
+          perm: 'access content'
+      cache:
+        type: tag
+        options: {  }
+      empty: {  }
+      sorts:
+        created:
+          id: created
+          table: node_field_data
+          field: created
+          relationship: none
+          group_type: group
+          entity_type: node
+          entity_field: created
+          plugin_id: date
+          order: DESC
+          granularity: second
+      arguments:
+        created_year:
+          id: created_year
+          table: node_field_data
+          field: created_year
+          relationship: none
+          group_type: group
+          entity_type: node
+          plugin_id: date_year
+          default_action: ignore
+          exception:
+            value: all
+            title_enable: false
+            title: All
+          title_enable: false
+          title: ''
+          default_argument_type: fixed
+          default_argument_options:
+            argument: ''
+          summary_options:
+            base_path: ''
+            count: true
+            override: false
+            items_per_page: 25
+          summary:
+            sort_order: asc
+            number_of_records: 0
+            format: default_summary
+          specify_validation: false
+          validate:
+            type: none
+            fail: 'not found'
+          validate_options: {  }
+      filters:
+        status:
+          id: status
+          table: node_field_data
+          field: status
+          entity_type: node
+          entity_field: status
+          plugin_id: boolean
+          value: '1'
+          group: 1
+          expose:
+            operator: ''
+      style:
+        type: default
+      row:
+        type: 'entity:node'
+        options:
+          view_mode: teaser
+      query:
+        type: views_query
+        options:
+          query_comment: ''
+          disable_sql_rewrite: false
+          distinct: false
+          replica: false
+          query_tags: {  }
+      relationships: {  }
+      header: {  }
+      footer: {  }
+      display_extenders: {  }
+    cache_metadata:
+      max-age: -1
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - url
+        - url.query_args
+        - 'user.node_grants:view'
+        - user.permissions
+      tags: {  }
+  page_1:
+    id: page_1
+    display_title: Page
+    display_plugin: page
+    position: 1
+    display_options:
+      display_extenders: {  }
+      path: archive-tree/%
+    cache_metadata:
+      max-age: -1
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - url
+        - url.query_args
+        - 'user.node_grants:view'
+        - user.permissions
+      tags: {  }
diff --git a/css/archive_tree.css b/css/archive_tree.css
new file mode 100644
index 0000000..8ba2413
--- /dev/null
+++ b/css/archive_tree.css
@@ -0,0 +1,9 @@
+.archive-tree-year {
+  font-weight: bold;
+}
+.archive-tree-month {
+  margin-left: 2em;
+  padding-left: 0.5em;
+  border-left: 2px solid #ccc;
+  display: block;
+}
diff --git a/src/Plugin/Block/ArchiveTreeBlock.php b/src/Plugin/Block/ArchiveTreeBlock.php
new file mode 100644
index 0000000..f57c250
--- /dev/null
+++ b/src/Plugin/Block/ArchiveTreeBlock.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace Drupal\archive_tree\Plugin\Block;
+
+use Drupal\Core\Block\BlockBase;
+
+/**
+ * Provides an 'Archive tree' block.
+ *
+ * @Block(
+ *   id = "archive_tree_block",
+ *   admin_label = @Translation("Archive tree"),
+ * )
+ */
+class ArchiveTreeBlock extends BlockBase {
+  /**
+   * {@inheritdoc}
+   */
+  public function build() {
+    $storage = \Drupal::entityTypeManager()->getStorage('node');
+    $query = $storage->getQuery()
+      ->condition('type', 'article')
+      ->condition('status', 1)
+      ->sort('created', 'DESC')
+      ->accessCheck(TRUE)
+      ->addTag('DANGEROUS_ACCESS_CHECK_OPT_OUT');
+    $nids = $query->execute();
+    $nodes = $storage->loadMultiple($nids);
+
+    $tree = [];
+    foreach ($nodes as $node) {
+      $created = $node->getCreatedTime();
+      $year = date('Y', $created);
+      $month = date('m', $created);
+      if (!isset($tree[$year])) {
+        $tree[$year] = ['count' => 0, 'months' => []];
+      }
+      if (!isset($tree[$year]['months'][$month])) {
+        $tree[$year]['months'][$month] = 0;
+      }
+      $tree[$year]['count']++;
+      $tree[$year]['months'][$month]++;
+    }
+
+    krsort($tree); // Descending years
+    foreach ($tree as &$data) {
+      krsort($data['months']); // Descending months
+    }
+
+    $output = '';
+    foreach ($tree as $year => $data) {
+      $year_url = '/archive-tree/' . $year;
+      $output .= '<details><summary class="archive-tree-year">';
+      $output .= '<a href="' . $year_url . '">' . $year . '</a> (' . $data['count'] . ')';
+      $output .= '</summary>';
+      foreach ($data['months'] as $month => $count) {
+        $month_url = '/archive-tree/' . $year . '/' . $month;
+        $output .= '<div class="archive-tree-month">';
+        $output .= '<a href="' . $month_url . '">' . $month . '</a> (' . $count . ')';
+        $output .= '</div>';
+      }
+      $output .= '</details>';
+    }
+
+    return [
+      '#markup' => $output,
+      '#allowed_tags' => ['details', 'summary', 'a', 'div'],
+      '#attached' => [
+        'library' => [
+          'archive_tree/archive_tree_styles',
+        ],
+      ],
+    ];
+  }
+}