itx-plan-create

Implementation Planning (Create Phase)

Create a high-level implementation plan for a GitHub issue with product output and technical details.

Instructions

1. Fetch Issue: Get full issue details

   gh issue view <number> --json number,title,body,labels,comments
   

2. Explore Codebase: Understand the scope

   • Identify affected files and modules
   • Review related code patterns
   • Check for existing tests
   • Note any dependencies

3. Create Plan: Structure the implementation approach

   • Break down into logical steps
   • Identify files to modify/create
   • Define test strategy
   • Note potential risks

4. Save Plan to File:

   mkdir -p .itx/<number>
   # Write plan to .itx/<number>/00_PLAN.md
   

5. Decide on Subtasks:

   • Simple issue (< 3 files, single concern): No subtasks needed
   • Complex issue (multiple files, multiple concerns): Create subtasks

6. If Subtasks Needed: Detect repository info and create subtask issues with sub-issue links

   # Extract repository info
   REMOTE_URL=$(git config --get remote.origin.url)
   OWNER_REPO=$(echo "$REMOTE_URL" | sed -E 's/.*[:/]([^/]+\/[^/]+)(\.git)?$/\1/')
   OWNER=$(echo "$OWNER_REPO" | cut -d'/' -f1)
   REPO=$(echo "$OWNER_REPO" | cut -d'/' -f2)
   
   # Create subtask
   CHILD_URL=$(gh issue create \
     --title "[Parent #<parent>] <subtask description>" \
     --label "ready" \
     --body "<subtask details>")
   CHILD_NUM=$(basename $CHILD_URL)
   
   # Link as sub-issue using GraphQL with dynamic repo
   gh api graphql -f query='
     mutation($parentId: ID!, $childId: ID!) {
       addSubIssue(input: {issueId: $parentId, subIssueId: $childId}) {
         issue { number }
         subIssue { number }
       }
     }' \
     -f parentId=$(gh api graphql -f query='query($owner: String!, $repo: String!, $issue: Int!) { repository(owner: $owner, name: $repo) { issue(number: $issue) { id } } }' -f owner="$OWNER" -f repo="$REPO" -F issue=$PARENT_NUM | jq -r '.data.repository.issue.id') \
     -f childId=$(gh api graphql -f query='query($owner: String!, $repo: String!, $issue: Int!) { repository(owner: $owner, name: $repo) { issue(number: $issue) { id } } }' -f owner="$OWNER" -f repo="$REPO" -F issue=$CHILD_NUM | jq -r '.data.repository.issue.id')