#!/bin/bash

# This is to serve as a Plugin for Drone to enable uploading of generic packages to Gitea e.g Ansible Roles

set -eo pipefail
shopt -s nullglob

# check to see if this file is being run or sourced from another script
_is_sourced() {
        # https://unix.stackexchange.com/a/215279
        [ "${#FUNCNAME[@]}" -ge 2 ] &&
                [ "${FUNCNAME[0]}" = '_is_sourced' ] &&
                [ "${FUNCNAME[1]}" = 'source' ]
}

# logging functions
action_log() {
        local type="$1"
        shift
        # accept argument string or stdin
        local text="$*"
        if [ "$#" -eq 0 ]; then text="$(cat)"; fi
        local dt
        dt="$(date -D 'YYYY-MM-DD hh:mm[:ss]')"
        printf '%s [%s] [gitea-composer-uploader]: %s\n' "$dt" "$type" "$text"
}
action_note() {
        action_log INF "$@"
}
action_warn() {
        action_log WRN "$@" >&2
}
action_error() {
        action_log ERR "$@" >&2
}

# Verify that the minimally required password settings are set for operation.
function verify_minimum_env {
        if [ -z "$username" ]; then
                action_warn "username is required for action operation"
        fi
        if [ -z "$baseurl" ]; then
                action_warn "baseurl setting is required for action operation"
        fi
        if [ -z "$owner" ]; then
                action_warn "owner setting is required for action operation"
        fi
        if [ -z "$access_token" ]; then
                action_warn "access_token setting is required for action operation"
        fi
        if [ -z "$version" ]; then
                action_warn "version setting is required for action operation"
        fi
        if [ -z "$username" ] ||
                [ -z "$baseurl" ] ||
                [ -z "$version" ] ||
                [ -z "$access_token" ]; then
                action_error <<-'EOF'
		You need to specify one/all of the following settings:
		  - username
                  - access_token
		  - baseurl
		EOF
                exit 1
        fi
        action_note "Sufficient configuration"

}

function delete_file {
        no_prefix_version="${version##v}"
        username_or_owner=${owner:-$username}
        no_owner_repo_name="${GITHUB_REPOSITORY##"$username_or_owner"/}"
        # shellcheck disable=SC2154
        for file in ${upload_file}; do
                action_note "curl -s -o /dev/null -w '%{http_code}' --user \"${username}:${access_token}\" -X DELETE ${baseurl}/api/v1/packages/${owner:-$username}/composer/${owner:-$username}%2F${no_owner_repo_name}/${no_prefix_version}"
                response=$(curl -s -o /dev/null -w "%{http_code}" --user "${username}:${access_token}" -X DELETE "${baseurl}/api/v1/packages/${owner:-$username}/composer/${owner:-$username}%2F${no_owner_repo_name}/${no_prefix_version}")
                if [ "${response}" == 204 ] || [ "${response}" == 200 ]; then
                        action_note "Deleted package version ${version} for ${owner:-$username}/${repo_name}"
                elif [ "${response}" == 404 ]; then
                        action_error "Not Found: Odd I cannot locate your package! [bug]"
                else
                        action_error "Response code was ${response}"
                fi
        done
}

function process_upload_file {
        for file in ${upload_file}; do
                #action_note "curl -s -o /dev/null -w '%{http_code}' --user \"${username}:${access_token}\" --upload-file ${file} \"${baseurl}/api/packages/${owner:-$username}/composer?version=${version}\""
                response=$(curl -s -o /dev/null -w "%{http_code}" --user "${username}:${access_token}" --upload-file "${file}" "${baseurl}/api/packages/${owner:-$username}/composer?version=${version}")
                if [ "${response}" == 409 ]; then
                        action_error "Conflict: File already exists"
                        if [ "${FILE_OVERWRITE:=$overwrite_files}" == 'true' ]; then
                                # Delete file as already exists
                                delete_file
                                response=$(curl -s -o /dev/null -w "%{http_code}" --user "${username}:${access_token}" --upload-file "${file}" "${baseurl}/api/packages/${owner:-$username}/composer?version=${version}")
                                if [ "${response}" == 409 ]; then
                                        action_error "Conflict: File already exists"
                                elif [ "${response}" == 201 ]; then
                                        action_note "File uploaded successfully"
                                elif [ "${response}" == 400 ]; then
                                        action_error "Bad Request: Version likely already exists"
                                fi
                        else
                                action_error 'Unable to upload file.  Maybe toggle overwrite_files setting to true :)'
                                exit 1
                        fi
                elif [ "${response}" == 201 ]; then
                        action_note "File uploaded successfully"
                elif [ "${response}" == 400 ]; then
                        action_warn "Bad Request: Version likely already exists"
                        if [ "${FILE_OVERWRITE:=$overwrite_files}" == 'true' ]; then
                                # Delete file as already exists
                                delete_file
                                response=$(curl -s -o /dev/null -w "%{http_code}" --user "${username}:${access_token}" --upload-file "${file}" "${baseurl}/api/packages/${owner:-$username}/composer?version=${version}")
                                if [ "${response}" == 409 ]; then
                                        action_error "Conflict: File already exists"
                                elif [ "${response}" == 201 ]; then
                                        action_note "File uploaded successfully"
                                elif [ "${response}" == 400 ]; then
                                        action_error "Bad Request: Version likely already exists"
                                        exit 1
                                fi
                        else
                                action_error 'Unable to upload file.  Maybe toggle overwrite_files setting to true :)'
                                exit 1
                        fi
                fi
        done

}

_main() {
        action_note "Starting"
        verify_minimum_env "$@"
        process_upload_file "$@"
}

# If we are sourced from elsewhere, don't perform any further actions
if ! _is_sourced; then
        _main "$@"
fi