#!/usr/bin/env bash
# enable-auto-deploy.sh — re-enable Forgejo Actions deploy workflow.
#
# Two scenarios :
#   A. .forgejo/workflows.disabled/  exists  (current state on this branch)
#      → rename back to .forgejo/workflows/, then ensure deploy.yml's
#        push: trigger is uncommented.
#   B. .forgejo/workflows/deploy.yml exists with push: commented out
#      → just uncomment.
#
# Run AFTER one successful workflow_dispatch run has proven the chain
# end-to-end.

set -Eeuo pipefail
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
. "$SCRIPT_DIR/lib.sh"
trap_errors

REPO_ROOT=$(git -C "$SCRIPT_DIR" rev-parse --show-toplevel) || die "not in a git repo"

WF_DIR="$REPO_ROOT/.forgejo/workflows"
WF_DISABLED="$REPO_ROOT/.forgejo/workflows.disabled"

# --- Step 1 : if workflows are renamed-disabled, restore the directory. -------
if [[ -d "$WF_DISABLED" ]]; then
    if [[ -d "$WF_DIR" ]]; then
        die "BOTH $WF_DIR and $WF_DISABLED exist — manual cleanup needed"
    fi
    info "rename $WF_DISABLED → $WF_DIR"
    git -C "$REPO_ROOT" mv .forgejo/workflows.disabled .forgejo/workflows
    ok "directory restored"
fi

DEPLOY_YML="$WF_DIR/deploy.yml"
require_file "$DEPLOY_YML"

# --- Step 2 : if push: trigger is commented, uncomment it. --------------------
if grep -qE '^[[:space:]]+push:$' "$DEPLOY_YML"; then
    ok "auto-deploy trigger already active in deploy.yml"
else
    if ! grep -qE '^[[:space:]]+# push:' "$DEPLOY_YML"; then
        die "deploy.yml has neither active push: nor commented '# push:' — manual edit required"
    fi
    info "uncommenting push: + branches: + tags: in $DEPLOY_YML"
    sed -i \
        -e 's|^    # push:                          # GATED — uncomment after first|    push:|' \
        -e 's|^    #     branches: \[main\]           # successful workflow_dispatch run|        branches: [main]|' \
        -e "s|^    #     tags: \\['v\\*'\\]               # see RUNBOOK_DEPLOY_BOOTSTRAP.md|        tags: ['v*']|" \
        "$DEPLOY_YML"

    if ! grep -qE '^[[:space:]]+push:$' "$DEPLOY_YML"; then
        die "sed didn't apply — open $DEPLOY_YML and uncomment by hand"
    fi
    ok "trigger uncommented"
fi

# --- Step 3 : prompt to commit + push. ----------------------------------------
info "diff:"
git -C "$REPO_ROOT" --no-pager diff -- "$WF_DIR" >&2 || true

cat >&2 <<EOF

  Next step :
    cd $REPO_ROOT
    git add .forgejo/
    git commit --no-verify -m "feat(forgejo): re-enable auto-deploy"
    git push origin main

  The push itself triggers the first auto-deploy. Watch :
    ${FORGEJO_API_URL:-https://10.0.20.105:3000}/${FORGEJO_OWNER:-senke}/${FORGEJO_REPO:-veza}/actions
EOF