let s = import "../schema.ncl" in

# Mode: create-pr
# Creates a GitHub/Gitea PR from the current branch.
# Body is generated from CHANGELOG.md [Unreleased] section — ontoref register
# must have been run before this mode to populate that section.
#
# Required params:
#   {title}   — PR title (defaults to branch name if not provided)
#   {base}    — base branch (default: main)
{
  id      = "create-pr",
  trigger = "Open a pull request from current branch using CHANGELOG [Unreleased] as body",

  preconditions = [
    "gh is available in PATH and authenticated (gh auth status)",
    "git working tree is clean (all changes committed)",
    "CHANGELOG.md exists with a populated [Unreleased] section",
    "ontoref register was run for all changes in this branch",
    "Current branch is not main/master",
  ],

  steps = [
    {
      id     = "check-auth",
      action = "Verify gh CLI is authenticated",
      actor  = 'Both,
      cmd    = "gh auth status",
      verify = "gh auth status 2>&1 | grep -q 'Logged in'",
      depends_on = [],
      on_error   = { strategy = 'Stop },
    },
    {
      id     = "check-unreleased",
      action = "Verify CHANGELOG has content in [Unreleased] section",
      actor  = 'Agent,
      cmd    = "awk '/## \\[Unreleased\\]/,/## \\[/' CHANGELOG.md | grep -E '^- |^### '",
      verify = "awk '/## \\[Unreleased\\]/,/## \\[/' CHANGELOG.md | grep -qE '^- |^### '",
      depends_on = [],
      on_error   = { strategy = 'Stop },
    },
    {
      id     = "check-adr-validate",
      action = "Run ADR constraint validation before PR",
      actor  = 'Both,
      cmd    = "source scripts/reflection.sh && nu \"${DISPATCHER}\" adr validate",
      verify = "source scripts/reflection.sh && nu \"${DISPATCHER}\" adr validate 2>&1 | grep -qv 'FAIL'",
      depends_on = [],
      on_error   = { strategy = 'Continue },
      note   = "Constraint failures are logged but do not block PR creation",
    },
    {
      id     = "extract-branch",
      action = "Get current branch name for PR title fallback",
      actor  = 'Agent,
      cmd    = "git rev-parse --abbrev-ref HEAD",
      verify = "git rev-parse --abbrev-ref HEAD | grep -qv 'main\\|master'",
      depends_on = [{ step = "check-auth", kind = 'OnSuccess }],
      on_error   = { strategy = 'Stop },
    },
    {
      id     = "build-body",
      action = "Extract [Unreleased] section from CHANGELOG as PR body",
      actor  = 'Agent,
      cmd    = "awk '/## \\[Unreleased\\]/{found=1; next} found && /^## \\[/{exit} found{print}' CHANGELOG.md | sed '/^$/N;/^\\n$/d'",
      verify = "awk '/## \\[Unreleased\\]/{found=1; next} found && /^## \\[/{exit} found{print}' CHANGELOG.md | grep -qE '\\S'",
      depends_on = [{ step = "check-unreleased", kind = 'OnSuccess }],
      on_error   = { strategy = 'Stop },
    },
    {
      id     = "create-pr",
      action = "Open pull request via gh CLI",
      actor  = 'Both,
      cmd    = "gh pr create --base {base} --title \"{title}\" --body \"$(awk '/## \\[Unreleased\\]/{found=1; next} found && /^## \\[/{exit} found{print}' CHANGELOG.md)\"",
      verify = "gh pr view --json number 2>/dev/null | jq '.number > 0'",
      depends_on = [
        { step = "build-body",      kind = 'OnSuccess },
        { step = "extract-branch",  kind = 'OnSuccess },
        { step = "check-adr-validate", kind = 'Always },
      ],
      on_error = { strategy = 'Stop },
    },
    {
      id     = "show-pr",
      action = "Display PR URL",
      actor  = 'Both,
      cmd    = "gh pr view --json url | jq -r '.url'",
      verify = "gh pr view --json url 2>/dev/null | jq -r '.url' | grep -qE '^http'",
      depends_on = [{ step = "create-pr", kind = 'OnSuccess }],
      on_error   = { strategy = 'Continue },
    },
  ],

  postconditions = [
    "PR is open and visible at the URL shown",
    "PR body matches CHANGELOG [Unreleased] content",
    "ADR constraints were validated before submission",
  ],
} | s.Mode std.string.NonEmpty