🧠 Go Backend Practice – Day 1

Goal: Build a minimal REST API with chi to lock in routing, JSON decoding, and error handling — all from memory.

To install, use:

curl -fsSL https://github.com/egeuysall/notes-api/master/install.sh | sh

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✅ Mini Project: Notes API (In-Memory)

Method	Route	Description
GET	/ping	Returns { "message": "pong" }
POST	/note	Accepts { "text": "..." }, returns ID
GET	/note/{id}	Returns note by ID or 404

• Use: chi, json.NewDecoder, json.NewEncoder, http.Error, chi.URLParam
• Store data in: map[string]string
• Generate random ID (e.g. 6-char string)

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⏱️ Schedule (3 Hours)

🕒 Hour 1: Recall Drill – No Copying

• Write main.go with chi.NewRouter
• Create GET /ping route
• Respond with JSON manually: json.NewEncoder(w).Encode(...)
• Set correct headers/status codes

🕒 Hour 2: Build Note API

• Add POST /note
  • Decode JSON body into struct
  • Generate random ID
  • Store in map
  • Respond with ID in JSON
• Add GET /note/{id}
  • Get param with chi.URLParam
  • Lookup in map, return value or 404
• Add DELETE /note/{id}
  • Get param with chi.URLParam
  • Check if note exists
  • Delete from map
  • Return 204 No Content

🕒 Hour 3: Review & Refactor

• Build the Notes CLI
  • Flags package
  • error handling
• Publish via Goreleaser
  • Configure Goreleaser

🕒 Hour 3: Review & Refactor

• Clean up code structure (handlers, error messages)
• Write a reflection note in Obsidian:
  • What did I remember easily?
  • What did I forget?
  • Any confusing areas?
• Save code to ~/go-snippets/notes-api