#!/bin/sh
set -eu

Instance=https://mstdn.isometry.group

if ! test -f access_token; then
	echo 'No access_token!' >&2
	exit 1
fi

access_token=$(cat access_token)

account_id=$(
	curl -Ss \
		-H "Authorization: Bearer ${access_token}" \
		${Instance}/api/v1/accounts/verify_credentials |
	jq -r .id
)

# XXX: no pagination because I don't expect this to ever have over 80 followers
followers=$(
	curl -Ss \
		-H "Authorization: Bearer ${access_token}" \
		"${Instance}/api/v1/accounts/${account_id}/followers?limit=80" |
	jq -r 'map(select(.acct | contains("@") | not)) | .[].id'
)

for follower_id in $followers; do
	account=$(
		curl -Ss \
			-H "Authorization: Bearer ${access_token}" \
			${Instance}/api/v1/accounts/${follower_id}
	)
	username=$(printf '%s' "${account}" | jq -r .username)
	pronouns=$(
		printf '%s' "${account}" |
		jq -r '
			.fields |
			map(select(.name | test("^pronouns?[?]?$"; "i"))) |
			.[].value
		'
	)
	if ! test -f $follower_id; then
		printf '%s' "${pronouns}" >$follower_id
		continue
	fi
	old_pronouns=$(cat $follower_id)
	if [ "${pronouns}" != "${old_pronouns}" ]; then
		curl -Ss -X POST \
			-H "Authorization: Bearer ${access_token}" \
			-F visibility=unlisted \
			--form-string \
			"status=@${username} has changed pronouns to: ${pronouns}" \
			${Instance}/api/v1/statuses >/dev/null
		printf '%s' "${pronouns}" >$follower_id
	fi
done