add slides for reading-9787562498056

.gitignore

@@ -2,4 +2,5 @@
 public/
 resources/_gen/
 isableFastRander/
-.hugo_build.lock
+.hugo_build.lock
+*Zone.Identifier

.gitmodules

@@ -5,3 +5,6 @@
 [submodule "themes/component-projects"]
 	path = themes/component-projects
 	url = https://github.com/hugo-fixit/component-projects.git
+[submodule "themes/hugo-embed-pdf-shortcode"]
+	path = themes/hugo-embed-pdf-shortcode
+	url = https://github.com/anvithks/hugo-embed-pdf-shortcode.git

README.md

@@ -7,15 +7,15 @@ This is a git repository for the FlareBlog. The Blog is based on [Hugo](https://
 Clone the repository:
 
 ```bash
-git clone https://github.com/JamesFlare1212/FlareBlog.git
+git clone --recurse-submodules https://github.com/JamesFlare1212/FlareBlog.git
 ```
 
 Then, install Hugo.
 
 For Linux:
 ```bash
-wget https://github.com/gohugoio/hugo/releases/download/v0.136.5/hugo_extended_0.136.5_linux-amd64.deb
-dpkg -i hugo_extended_0.136.5_linux-amd64.deb
+wget https://github.com/gohugoio/hugo/releases/download/v0.146.0/hugo_extended_0.146.0_linux-amd64.deb
+sudo dpkg -i hugo_extended_0.146.0_linux-amd64.deb
 ```
 
 For MacOS:

archetypes/default.md

@@ -2,6 +2,7 @@
 title: {{ replace .TranslationBaseName "-" " " | title }}
 subtitle:
 date: {{ .Date }}
+lastmod: {{ .Date }}
 slug: {{ substr .File.UniqueID 0 7 }}
 description:
 keywords:

archetypes/posts.md

@@ -2,13 +2,14 @@
 title: {{ replace .TranslationBaseName "-" " " | title }}
 subtitle:
 date: {{ .Date }}
+lastmod: {{ .Date }}
 slug: {{ substr .File.UniqueID 0 7 }}
 draft: true
 author:
-  name:
-  link:
+  name: James
+  link: https://www.jamesflare.com
   email:
-  avatar:
+  avatar: /site-logo.avif
 description:
 keywords:
 license:

assets/css/_custom.scss

@@ -46,4 +46,8 @@ details summary strong {
       margin-top: 0;
       margin-bottom: 0;
     }
-  }
+}
+
+.katex-display {
+    overflow-y: clip;
+}

config/_default/hugo.toml

@@ -9,13 +9,14 @@
 # Hugo Configuration
 # See: https://gohugo.io/getting-started/configuration/
 # -------------------------------------------------------------------------------------
-
+#ignoreLogs = ['error-get-gh-repo', 'error-get-remote-json']
 # website title
 title = "FlareBlog"
 # Hostname (and path) to the root
 baseURL = "https://www.jamesflare.com/"
 # theme list
-theme = ["FixIt", "component-projects"]
+theme = ["FixIt", "component-projects", "hugo-embed-pdf-shortcode"]
+enableInlineShortcodes = true
 defaultContentLanguage = "en"
 # language code ["en", "zh-CN", "fr", "pl", ...]
 languageCode = "en"
@@ -24,7 +25,8 @@ languageName = "English"
 # whether to include Chinese/Japanese/Korean
 hasCJKLanguage = true
 # default amount of posts in each pages
-paginate = 12
+[pagination]
+  pagerSize = 12
 # copyright description used only for seo schema
 copyright = ""
 # whether to use robots.txt
@@ -112,6 +114,11 @@ enableEmoji = true
       table = true
       taskList = true
       typographer = true
+      [markup.goldmark.extensions.passthrough]
+        enable = true
+        [markup.goldmark.extensions.passthrough.delimiters]
+          block = [['\[', '\]'], ['$$', '$$']]
+          inline = [['\(', '\)'], ['$', '$']]
       # https://gohugo.io/getting-started/configuration-markup/#extras
       [markup.goldmark.extensions.extras]
         [markup.goldmark.extensions.extras.delete]
@@ -166,7 +173,7 @@ enableEmoji = true
 # -------------------------------------------------------------------------------------
 
 [privacy]
-  [privacy.twitter]
+  [privacy.x]
     enableDNT = true
   [privacy.youtube]
     privacyEnhanced = true
@@ -284,6 +291,8 @@ enableEmoji = true
   enablePWA = false
   # FixIt 0.2.14 | NEW whether to add external Icon for external links automatically
   externalIcon = false
+  # FixIt 0.3.13 | NEW whether to capitalize titles
+  capitalizeTitles = true
   # FixIt 0.3.0 | NEW whether to add site title to the title of every page
   # remember to set up your site title in `hugo.toml` (e.g. title = "title")
   withSiteTitle = true
@@ -292,6 +301,8 @@ enableEmoji = true
   # FixIt 0.3.0 | NEW whether to add site subtitle to the title of index page
   # remember to set up your site subtitle by `params.header.subtitle.name`
   indexWithSubtitle = false
+  # FixIt 0.3.13 | NEW whether to show summary in plain text
+  summaryPlainify = false
   # FixIt 0.2.14 | NEW FixIt will, by default, inject a theme meta tag in the HTML head on the home page only.
   # You can turn it off, but we would really appreciate if you don’t, as this is a good way to watch FixIt's popularity on the rise.
   disableThemeInject = false
@@ -394,6 +405,9 @@ enableEmoji = true
     enable = false
     sticky = false
     showHome = false
+    # FixIt 0.3.13 | NEW
+    separator = "/"
+    capitalize = true
 
   # FixIt 0.3.10 | NEW Post navigation config
   [params.navigation]
@@ -477,6 +491,14 @@ enableEmoji = true
       # whether to show the full text content in feed.
       fullText = false
 
+  # FixIt 0.3.13 | NEW recently updated pages config for archives, section and term list
+  [params.recentlyUpdated]
+    archives = true
+    section = true
+    list = true
+    days = 30
+    maxCount = 10
+
   # FixIt 0.2.17 | NEW TagCloud config for tags page
   [params.tagcloud]
     enable = false
@@ -519,7 +541,7 @@ enableEmoji = true
     Twitter = ""
     Instagram = ""
     Facebook = ""
-    Telegram = "ossOpration"
+    Telegram = ""
     Medium = ""
     Gitlab = ""
     Youtubelegacy = ""
@@ -838,8 +860,8 @@ enableEmoji = true
         appKey = ""
         placeholder = ""
         avatar = "mp"
-        meta = ""
-        requiredFields = ""
+        meta = ['nick','mail','link']
+        requiredFields = []
         pageSize = 10
         lang = ""
         visitor = true
@@ -969,6 +991,25 @@ enableEmoji = true
     # For values, see https://mermaid.js.org/config/theming.html#available-themes
     themes = ["default", "dark"]
 
+  # FixIt 0.3.13 | NEW Admonitions custom config
+  # See https://fixit.lruihao.cn/documentation/content-management/shortcodes/extended/admonition/#custom-admonitions
+  # syntax: <type> = <icon>
+  [params.admonition]
+    # ban = "fa-solid fa-ban"
+  
+  # FixIt 0.3.14 | NEW Task lists custom config
+  # See https://fixit.lruihao.cn/documentation/content-management/advanced/#custom-task-lists
+  # syntax: <sign> = <icon>
+  [params.taskList]
+    # tip = "fa-regular fa-lightbulb"
+
+  # FixIt 0.3.15 | NEW version shortcode config
+  [params.repoVersion]
+    # url prefix for the release tag
+    url = "https://github.com/hugo-fixit/FixIt/releases/tag/v"
+    # project name
+    name = "FixIt"
+
   # FixIt 0.2.12 | NEW PanguJS config
   [params.pangu]
     # For Chinese writing
@@ -1028,7 +1069,7 @@ enableEmoji = true
 
   # Analytics config
   [params.analytics]
-    enable = false
+    enable = true
     # Google Analytics
     [params.analytics.google]
       id = ""
@@ -1039,6 +1080,31 @@ enableEmoji = true
       id = ""
       # server url for your tracker if you're self hosting
       server = ""
+    # FixIt 0.3.16 | NEW Baidu Analytics
+    [params.analytics.baidu]
+      id = ""
+    # FixIt 0.3.16 | NEW Umami Analytics
+    [params.analytics.umami]
+      data_website_id = "c687e659-a8de-4d17-a794-0fb82dd085f5"
+      src = "https://track.jamesflare.com/script.js"
+      data_host_url = "https://track.jamesflare.com"
+      data_domains = ""
+    # FixIt 0.3.16 | NEW Plausible Analytics
+    [params.analytics.plausible]
+      data_domain = ""
+      src = ""
+    # FixIt 0.3.16 | NEW Cloudflare Analytics
+    [params.analytics.cloudflare]
+      token = ""
+    # FixIt 0.3.16 | NEW Splitbee Analytics
+    [params.analytics.splitbee]
+      enable = false
+      # no cookie mode
+      no_cookie = true
+      # respect the do not track setting of the browser
+      do_not_track = true
+      # token(optional), more info on https://splitbee.io/docs/embed-the-script
+      data_token = ""
 
   # Cookie consent config
   [params.cookieconsent]
@@ -1115,6 +1181,22 @@ enableEmoji = true
     # whether to show the full text content in feed.
     fullText = true
 
+  # FixIt 0.3.12 | NEW Custom partials config
+  # Custom partials must be stored in the /layouts/partials/ directory.
+  # Depends on open custom blocks https://fixit.lruihao.cn/references/blocks/
+  [params.customPartials]
+    head = []
+    menuDesktop = []
+    menuMobile = []
+    profile = []
+    aside = []
+    comment = []
+    footer = []
+    widgets = []
+    assets = []
+    postFooterBefore = []
+    postFooterAfter = []
+
   # FixIt 0.2.15 | NEW Developer options
   # Select the scope named `public_repo` to generate personal access token,
   # Configure with environment variable `HUGO_PARAMS_GHTOKEN=xxx`, see https://gohugo.io/functions/os/getenv/#examples

content/en/posts/csci-1100/crib-sheets/index.md

@@ -0,0 +1,84 @@
+---
+title: CSCI 1100 - Test Crib Sheets
+subtitle:
+date: 2024-12-08T22:17:36-05:00
+lastmod: 2024-12-08T22:17:36-05:00
+slug: csci-1100-crib-sheets
+draft: false
+author:
+  name: James
+  link: https://www.jamesflare.com
+  email:
+  avatar: /site-logo.avif
+description: This post shares the crib sheets I have been used in Test 2, Test 3 and Final of CSCI 1100.
+keywords:
+license:
+comment: true
+weight: 0
+tags:
+  - CSCI 1100
+  - Exam
+  - RPI
+  - Python
+  - Programming
+categories:
+  - Programming
+collections:
+  - CSCI 1100
+hiddenFromHomePage: false
+hiddenFromSearch: false
+hiddenFromRss: false
+hiddenFromRelated: false
+summary: This post shares the crib sheets I have been used in Test 2, Test 3 and Final of CSCI 1100.
+resources:
+  - name: featured-image
+    src: featured-image.jpg
+  - name: featured-image-preview
+    src: featured-image-preview.jpg
+toc: true
+math: false
+lightgallery: false
+password:
+message:
+repost:
+  enable: false
+  url:
+
+# See details front matter: https://fixit.lruihao.cn/documentation/content-management/introduction/#front-matter
+---
+
+<!--more-->
+
+> [!TIP]
+> You can edit this PDF with Adobe Photoshop. Yes, you are correct! I made this PDF by Photoshop. The font have been used in these crib sheets is [Intel One Mono](https://github.com/intel/intel-one-mono).
+
+## Test 1 Crib Sheet
+
+> [!NOTE]
+> I didn't use a crib sheet in test 1. So, not crib sheets here.
+
+## Test 2 Crib Sheet
+
+<div style="width: 100%; max-width: 600px; margin: 0 auto; display: block;">
+  <embed src="Test 2 Crib Sheet A.pdf" type="application/pdf" width="100%" height="500px">
+</div>
+
+<div style="width: 100%; max-width: 600px; margin: 0 auto; display: block;">
+  <embed src="Test 2 Crib Sheet B.pdf" type="application/pdf" width="100%" height="500px">
+</div>
+
+## Test 3 Crib Sheet
+
+<div style="width: 100%; max-width: 600px; margin: 0 auto; display: block;">
+  <embed src="Test 3 Crib Sheet A.pdf" type="application/pdf" width="100%" height="500px">
+</div>
+
+<div style="width: 100%; max-width: 600px; margin: 0 auto; display: block;">
+  <embed src="Test 3 Crib Sheet B.pdf" type="application/pdf" width="100%" height="500px">
+</div>
+
+## Final Crib Sheet
+
+<div style="width: 100%; max-width: 600px; margin: 0 auto; display: block;">
+  <embed src="Final Crib Sheet A.pdf" type="application/pdf" width="100%" height="500px">
+</div>

content/en/posts/csci-1100/hw-1/index.md

@@ -10,7 +10,7 @@ author:
   email:
   avatar: /site-logo.avif
 description: This blog post provides a detailed overview of a Python programming homework assignment, which includes creating a Mad Libs game, calculating speed and pace, and generating a framed box with user-specified dimensions.
-keywords: ["Python", "programming", "homework", "Mad Libs", "speed calculation", "framed box"]
+keywords: ["Python", "Programming", "Homework", "Mad Libs", "Speed calculation", "Framed box"]
 license:
 comment: true
 weight: 0
@@ -120,8 +120,6 @@ We will test your code for the values used in our examples as well as a range of
 
 {{< link href="HW1.zip" content="HW1.zip" title="Download HW1.zip" download="HW1.zip" card=true >}}
 
-***
-
 ## Solution
 
 ### hw1_part1.py

content/en/posts/csci-1100/hw-2/index.md

@@ -182,8 +182,6 @@ Test your code well and when you are sure that it works, please submit it as a f
 
 {{< link href="HW2.zip" content="HW2.zip" title="Download HW2.zip" download="HW2.zip" card=true >}}
 
-***
-
 ## Solution
 
 ### hw2_part1.py

content/en/posts/csci-1200/hw-1/index.md

@@ -0,0 +1,504 @@
+---
+title: CSCI 1200 - Homework 1 - Spotify Playlists
+subtitle:
+date: 2025-02-15T13:38:46-05:00
+lastmod: 2025-02-15T13:38:46-05:00
+slug: csci-1200-hw-1
+draft: false
+author:
+  name: James
+  link: https://www.jamesflare.com
+  email:
+  avatar: /site-logo.avif
+description: This blog post provides a detailed guide on developing a music playlist management program similar to Spotify using C++. It covers command-line parameter handling, file I/O operations, and the use of STL string and vector classes.
+keywords: ["C++", "Programming", "Homework", "STL Vector","Playlist Management"]
+license:
+comment: true
+weight: 0
+tags:
+  - CSCI 1200
+  - Homework
+  - RPI
+  - C++
+  - Programming
+categories:
+  - Programming
+collections:
+  - CSCI 1200
+hiddenFromHomePage: false
+hiddenFromSearch: false
+hiddenFromRss: false
+hiddenFromRelated: false
+summary: This blog post provides a detailed guide on developing a music playlist management program similar to Spotify using C++. It covers command-line parameter handling, file I/O operations, and the use of STL string and vector classes.
+resources:
+  - name: featured-image
+    src: featured-image.jpg
+  - name: featured-image-preview
+    src: featured-image-preview.jpg
+toc: true
+math: false
+lightgallery: false
+password:
+message:
+repost:
+  enable: false
+  url:
+
+# See details front matter: https://fixit.lruihao.cn/documentation/content-management/introduction/#front-matter
+---
+
+<!--more-->
+
+## Assignment Requirements
+
+{{< details >}}
+Before starting this homework, make sure you have read and understood the Academic Integrity Policy.
+
+In this assignment you will develop a program to manage music playlists like Spotify does, let's call this program New York Playlists. Please read the entire handout before starting to code the assignment. 
+
+## Learning Objectives
+
+- Practice handling command line arguments.
+- Practice handling file input and output.
+- Practice the C++ Standard Template Library string and vector classes. 
+
+## Command Line Arguments
+
+Your program will be run like this:
+
+```console
+./nyplaylists.exe playlist.txt actions.txt output.txt
+```
+
+Here:
+
+- nyplaylists.exe is the executable file name.
+- playlist.txt is the name of an input file which contains a playlist - in this README, we will refer to this file as the **playlist file**.
+- actions.txt is an input file which defines a sequence of actions - in this README, we will refer to this file as the **actions file**.
+- output.txt where to print your output to.
+
+## Playlist File Format and Output File Format
+
+The playlist file and the output file have the same format. Take the playlist_tiny1.txt as an example, this file has the following 4 lines:
+
+```console
+"Perfect Duet" Ed Sheeran, Beyonce
+"Always Remember Us This Way" Lady Gaga current
+"Million Reasons" Lady Gaga
+"I Will Never Love Again - Film Version" Lady Gaga, Bradley Cooper
+```
+
+Except the second line, each line has two fields, the music title, and the artist(s). There is one single space separating these two fields. 
+
+The second line is special, it ends with the word **current**, meaning that the song "Always Remember Us This Way" is the currently playing song. This word **current** appears in the **playlist file** once and should also appear in the output file once.
+
+## Actions File Format
+
+The actions file defines actions. Take actions1.txt as an example, this file has the following lines:
+
+```console
+add "Umbrella" Rihanna
+add "We Are Young" Fun
+add "You Are Still the One" Shania Twain
+remove "Million Reasons" Lady Gaga
+add "Viva La Vida" Coldplay
+move "I Will Never Love Again - Film Version" Lady Gaga, Bradley Cooper 1
+next
+next
+next
+previous
+move "You Are Still the One" Shania Twain 4
+```
+
+The **actions file** may include 5 different types of actions:
+
+- add, which adds a song to the end of the playlist.
+- remove, which removes a song from the playlist.
+- move, which moves a song to a new position - the new position is always included at the end of the line. The line *move "I Will Never Love Again - Film Version" Lady Gaga, Bradley Cooper 1*, moves the song "I Will Never Love Again - Film Version" to position 1, and the line *move "You Are Still the One" Shania Twain 4*, moves the song "You Are Still the One" to position 4. Note that, unliked array indexing in C/C++, positioning in Spotify starts at 1, as opposed to 0. This can be seen in the above Spotify screenshot: the first position is position 1.
+- next, which skips the currently playing song and starts playing the song that is listed directly after it. Note that if the currently playing song is already at the bottom of the playlist, the action *next* will make the first song (i.e., the song at the very top of the playlist) as the currently playing song.
+- previous, which skips the currently playing song and goes to the song listed directly before the currently playing song. Note that if the currently playing song is already at the top of the playlist, the action *previous* will make the last song (i.e., the song at the bottom of the playlist) as the currently playing song.
+
+According to this sample **actions file**, 4 songs will be added to the playlist, 1 song will be removed, 2 songs will be moved. And the currently playing song will be a different song, instead of the song "Always Remember Us This Way".
+
+When playlist_tiny1.txt and actions1.txt are supplied to your program as the two input files, your program should produce the following output file:
+
+```console
+"I Will Never Love Again - Film Version" Lady Gaga, Bradley Cooper
+"Perfect Duet" Ed Sheeran, Beyonce
+"Always Remember Us This Way" Lady Gaga
+"You Are Still the One" Shania Twain
+"Umbrella" Rihanna
+"We Are Young" Fun current
+"Viva La Vida" Coldplay
+```
+
+## Non-existent Songs
+
+If a move action or a remove action as defined in the **actions file** attempts to move or remove a song which does not exist in the playlist, your program should ignore such an action.
+
+## Duplicated Songs
+
+In cases where the same song appears more than once on the playlist, choose the first song (to move or remove) - i.e., search the playlist, starting from the top to the bottom, identify the first occurrence of this song, and use it (to move or remove).
+
+## Instructor's Code
+
+You can test (but not view) the instructor's code here: [instructor code](http://ds.cs.rpi.edu/hws/playlists/). Note that this site is hosted on RPI's network and you can visit this site only if you are on RPI's network: either on campus or using a VPN service. Also note that, it is not your job in this assignment to play musics, the instructor's C++ code here is just used as the backend to manage the playlist.
+
+## Program Requirements & Submission Details
+
+In this assignment, you are required to use both std::string and std::vector. You are NOT allowed to use any data structures we have not learned so far.
+
+Use good coding style when you design and implement your program. Organize your program into functions: don’t put all the code in main! Be sure to read the [Homework Policies](https://www.cs.rpi.edu/academics/courses/spring25/csci1200/homework_policies.php) as you put the finishing touches on your solution. Be sure to make up new test cases to fully debug your program and don’t forget to comment your code! Complete the provided template [README.txt](./README.txt). You must do this assignment on your own, as described in the [Collaboration Policy & Academic Integrity](https://www.cs.rpi.edu/academics/courses/spring25/csci1200/academic_integrity.php) page. If you did discuss the problem or error messages, etc. with anyone, please list their names in your README.txt file. Prepare and submit your assignment as instructed on the course webpage. Please ask a TA if you need help preparing your assignment for submission.
+
+**Due Date**: 01/16/2025, 10pm.
+
+## Rubric
+
+13 pts
+- README.txt Completed (3 pts)
+  - One of name, collaborators, or hours not filled in. (-1)
+  - Two or more of name, collaborators, or hours not filled in. (-2)
+  - No reflection. (-1)
+- STL Vector & String (3 pts)
+  - Uses data structures which have not been covered in this class. (-3)
+  - Did not use STL vector (-2)
+  - Did not use STL string (-2)
+- Program Structure (7 pts)
+  - No credit (significantly incomplete implementation) (-7)
+  - Putting almost everything in the main function. It's better to create separate functions for different tasks. (-2)
+  - Improper uses or omissions of const and reference. (-1)
+  - Almost total lack of helpful comments. (-4)
+  - Too few comments. (-2)
+  - Contains useless comments like commented-out code, terminal commands, or silly notes. (-1)
+  - Overly cramped, excessive whitespace, or poor indentation. (-1)
+  - Lacks error checking (num of args, invalid file names, invalid command, etc.) (-1)
+  - Poor choice of variable names: non-descriptive names (e.g. 'vec', 'str', 'var'), single-letter variable names (except single loop counter), etc. (-2)
+  - Uses global variables. (-1)
+  - Overly long lines, in excess of 100 or so characters. It's recommended to keep all lines short and put comments on their own lines. (-1)
+{{< /details >}}
+
+## Supporting Files
+
+{{< link href="spotify_playlists.7z" content="spotify_playlists.7z" title="Download spotify_playlists.7z" download="spotify_playlists.7z" card=true >}}
+
+## Program Design
+
+Before start, we need to find out what need to do. Let's draw a flowchart to exam what are the steps.
+
+```mermaid
+flowchart TB
+    A(("Start")) --> D["Read 'playlist file', 'actions file'"]
+    
+    subgraph "Initialize"
+    D --> E["Find the index of current song (if any)"]
+    end
+    
+    E --> F{"For each action in 'actions file'"}
+    
+    subgraph "Process Actions"
+    F -- next --> G["Find the index of current song (if any)"]
+    G --> H["Remove 'current' from current song"]
+    H --> I{"Is it the last song?"}
+    I -- Yes --> J["Set index to 0"]
+    I -- No --> K["Set index to index+1"]
+    J --> L["Mark new current song"]
+    K --> L["Mark new current song"]
+    
+    F -- previous --> M["Find the index of current song (if any)"]
+    M --> N["Remove 'current' from current song"]
+    N --> O{"Is it the first song?"}
+    O -- Yes --> P["Set index to last song"]
+    O -- No --> Q["Set index to index-1"]
+    P --> R["Mark new current song"]
+    Q --> R["Mark new current song"]
+    
+    F -- add --> S["'Build' the new song string"]
+    S --> T["Append to playlist"]
+
+    F -- remove --> U["'Build' the song string to remove"]
+    U --> V["Find the first occurrence (if any)"]
+    V --> W["Remove from playlist (ignore if not found)"]
+    
+    F -- move --> X["'Build' the song string to move"]
+    X --> Y["Check 'move' destination"]
+    Y --> Z["Find the first occurrence (if any)"]
+    Z --> ZA["Remove from playlist (ignore if not found)"]
+    ZA --> ZB["Insert at new position"]
+    end
+```
+
+Then, we can plan what function to use in this program.
+
+```mermaid
+flowchart TB
+    subgraph "Main"
+    main["main()"]
+    end
+
+    subgraph "File IO"
+    load_list("load_list()")
+    get_text("get_text()")
+    write_list("write_list()")
+    end
+
+    subgraph "Helpers"
+    is_all_digits("is_all_digits()")
+    tokenizer("tokenizer()")
+    check_in_list("check_in_list()")
+    remove_in_list("remove_in_list()")
+    get_current("get_current()")
+    build_song("build_song()")
+    end
+
+    %% Connections
+    main --> load_list
+    load_list --> get_text
+    main --> write_list
+
+    main --> is_all_digits
+    main --> tokenizer
+    main --> check_in_list
+    main --> remove_in_list
+    main --> get_current
+    main --> build_song
+
+    remove_in_list --> check_in_list
+```
+
+## Pitfalls
+
+1. It's hard to load each argument correctly. For example, song can include spaces, the singer can also have space or something else in their names. But luckily, we don't need care too much about the middle part. I mean the first argument is always the command. The rest of it is the song information we need to add / delete. I split the arguments / songs into parts by space. `<action> <song> <location>` and take the each part as needed.
+2. When I am moving / adding the song. It's possible that the song has a `current` string at the end of line (in the playlist file already). If we only check the song's name, it will not pass some test cases. For example, this is how I handle this case for `move` command.
+
+    ```diff
+    if (tokens[0] == "move") {
+        if (is_all_digits(tokens.back())){
+            //set target position
+            int dest = std::stoi(tokens.back());
+            //build song from tokens
+            std::string song;
+            song = build_song(tokens, 1, tokens.size() - 1);
+    +       //fix song name if it has current tag
+    +       if (!check_in_list(song, playlist) &&
+    +           !check_in_list(song + " current", playlist)) {continue;}
+    +       else if (check_in_list(song + " current", playlist)) {
+    +           song += " current";
+    +       }
+            remove_in_list(song, playlist);
+            playlist.insert(playlist.begin() + dest - 1, song);
+        } else {
+            std::cout << "ERROR: Missing move destination" << std::endl;
+            continue;
+        }
+    }
+    ```
+
+    I added another check with the song + `current` in the playlist before I actually add it into the playlist.
+
+## Solution
+
+### nyplaylists.cpp
+
+```cpp
+//An implement of CSCI-1200 HW1 Spotify Playlists
+//Date: 2025/1/16
+//Author: JamesFlare
+#include <vector>
+#include <string>
+#include <iostream>
+#include <fstream>
+
+std::string get_text(const std::string &fname) {
+    //load a text file into a string
+    std::ifstream inFile(fname);
+    //check if file exists
+    if (!inFile) {
+        std::cout << "Error: File not found" << std::endl;
+        return "";
+    }
+    std::string text;
+    std::string line;
+    while (std::getline(inFile, line)) {
+        text += line;
+        text += "\n";
+    }
+    inFile.close();
+
+    return text;
+}
+
+std::vector<std::string> load_list(const std::string &fname) {
+    //load a text file into a vector of strings
+    std::string text = get_text(fname);
+
+    std::vector<std::string> lines;
+    std::size_t start = 0;
+    std::size_t end   = 0;
+    while ((end = text.find('\n', start)) != std::string::npos) {
+        lines.push_back(text.substr(start, end - start));
+        start = end + 1;    
+    }
+    if (start < text.size()) {
+        lines.push_back(text.substr(start));
+    }
+
+    return lines;
+}
+
+bool is_all_digits(const std::string& s) {
+    //check if string is int
+    for (char c : s) {
+        if (!std::isdigit(static_cast<unsigned char>(c))) {
+            return false;
+        }
+    }
+    return !s.empty();
+}
+
+std::vector<std::string> tokenizer(const std::string &s) {
+    //split string into tokens
+    std::vector<std::string> tokens;
+    std::string token;
+    for (char c : s) {
+        if (c == ' ') {
+            tokens.push_back(token);
+            token = "";
+        } else {
+            token += c;
+        }
+    }
+    tokens.push_back(token);
+    return tokens;
+}
+
+bool check_in_list (const std::string &s, const std::vector<std::string> &list) {
+    //check if string is in list
+    for (std::string item : list) {
+        if (s == item) {
+            return true;
+        }
+    }
+    return false;
+}
+
+void remove_in_list (const std::string &s, std::vector<std::string> &list) {
+    //remove string from list
+    if (!check_in_list(s, list)) {return;}
+    for (int i = 0; i < list.size(); i++) {
+        if (list[i] == s) {
+            list.erase(list.begin() + i);
+            return;
+        }
+    }
+}
+
+int get_current (std::vector<std::string> &playlist) {
+    //return the index of the string has word current at the end
+    for (int i = 0; i < playlist.size(); i++) {
+        if (playlist[i].find("current") != std::string::npos) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+std::string build_song (const std::vector<std::string> &tokens, const int &start, const int &end) {
+    //build string from tokens w/ start and end positions
+    std::string song;
+    for (int i = start; i < end; i++) {
+        song += tokens[i];
+        if (i != end - 1) {
+            song += " ";
+        }
+    }
+    return song;
+}
+
+void write_list(const std::string &fname, const std::vector<std::string> &list) {
+    //write list to file
+    std::ofstream outFile(fname);
+    for (std::string line : list) {
+        outFile << line << std::endl;
+    }
+    outFile.close();
+}
+
+int main(int argc, char *argv[]) {
+    //take 3 arguments
+    if (argc < 3) {
+        std::cout << "Error: Not enough arguments" << std::endl;
+        return 1;
+    }
+    //load arguments
+    std::string playlist_fname = argv[1];
+    std::string action_list_fname = argv[2];
+    std::string output_fname = argv[3];
+    //load working files
+    std::vector<std::string> playlist = load_list(playlist_fname);
+    std::vector<std::string> action_list = load_list(action_list_fname);
+    //get current playing song id
+    int current_song_id = get_current(playlist);
+    //execute actions
+    for (std::string command : action_list) {
+        //split command into tokens
+        std::vector<std::string> tokens = tokenizer(command);
+        if (tokens[0] == "next") {
+            current_song_id = get_current(playlist);
+            //remove "current" tag
+            playlist[current_song_id].erase(playlist[current_song_id].length() - 8);
+            if (current_song_id == playlist.size() - 1) {
+                current_song_id = 0;
+            } else {
+                current_song_id++;
+            }
+            //update current song
+            playlist[current_song_id] += " current";
+        }
+        if (tokens[0] == "previous") {
+            current_song_id = get_current(playlist);
+            //remove "current" tag
+            playlist[current_song_id].erase(playlist[current_song_id].length() - 8);
+            if (current_song_id == 0) {
+                current_song_id = playlist.size() - 1;
+            } else {
+                current_song_id--;
+            }
+            //update current song
+            playlist[current_song_id] += " current";
+        }
+        if (tokens[0] == "add") {
+            std::string song;
+            song = build_song(tokens, 1, tokens.size());
+            playlist.push_back(song);
+        }
+        if (tokens[0] == "remove") {
+            std::string song;
+            song = build_song(tokens, 1, tokens.size());
+            remove_in_list(song, playlist);
+        }
+        if (tokens[0] == "move") {
+            if (is_all_digits(tokens.back())){
+                //set target position
+                int dest = std::stoi(tokens.back());
+                //build song from tokens
+                std::string song;
+                song = build_song(tokens, 1, tokens.size() - 1);
+                //fix song name if it has current tag
+                if (!check_in_list(song, playlist) &&
+                    !check_in_list(song + " current", playlist)) {continue;}
+                else if (check_in_list(song + " current", playlist)) {
+                    song += " current";
+                }
+                remove_in_list(song, playlist);
+                playlist.insert(playlist.begin() + dest - 1, song);
+            } else {
+                std::cout << "ERROR: Missing move destination" << std::endl;
+                continue;
+            }
+        }
+    }
+    //write back file
+    write_list(output_fname, playlist);
+    return 0;
+}
+```

content/en/posts/docker-compose/lobechat-db/index.md

@@ -111,7 +111,10 @@ After modifying, write the `docker-compose.yaml` file. Then start the container:
 docker compose up -d  
 ```
 
-Remember to correctly configure a reverse proxy; this proxy must support HTTPS because all of Logto's APIs must be run in a secure environment, otherwise errors will occur[^2]. Additionally, just having HTTPS isn't enough; you also need to set the `X-Forwarded-Proto` header value to `https` to inform Logto that users are accessing it via HTTPS. I use Nginx as my reverse proxy service and provide a reference configuration below (modify according to your situation).
+> [!WARNING]
+> Don't forget to set `X-Forwarded-Proto` header in Nginx!
+
+this proxy must support HTTPS because all of Logto's APIs must be run in a secure environment, otherwise errors will occur[^2]. Additionally, just having HTTPS isn't enough; you also need to set the `X-Forwarded-Proto` header value to `https` to inform Logto that users are accessing it via HTTPS. I use Nginx as my reverse proxy service and provide a reference configuration below (modify according to your situation).
 
 [^2]: Discussion on errors https://github.com/logto-io/logto/issues/4279