version: '3'

tasks:
  main:
    desc: Library Carpentry Lesson covering DOAJ
    vars:
      DIR: '{{splitList ":" .TASK | first}}' # results in the task namespace, which is identical to the directory name
    cmds:
      - task: refine
      - task: :check # check OpenRefine log for any warnings and exit on error
        vars: {DIR: '{{.DIR}}'}

  refine:
    dir: ./{{.DIR}}
    vars:
      DIR: '{{splitList ":" .TASK | first}}'
      PROJECT: doaj
      PORT: 3334 # assign a different port for each project
      RAM: 2048M # maximum RAM for OpenRefine java heap space
      LOG: '>(tee -a "{{.PROJECT}}.log") 2>&1' # be careful when making changes here, as the path to the log file should match the server log (see main task "start")
    deps:
      - task: download # will be executed each run independent of up-to-date check
    cmds:
      - task: :start # launch OpenRefine
        vars: {DIR: '{{.DIR}}', PROJECT: '{{.PROJECT}}', PORT: '{{.PORT}}', RAM: '{{.RAM}}'}
      - > # import file
        "$CLIENT" -P {{.PORT}}
        --create "$(readlink -m input/doaj-article-sample.csv)"
        --projectName "{{.PROJECT}}"
        > {{.LOG}}
      - > # apply transformation rules
        "$CLIENT" -P {{.PORT}} "{{.PROJECT}}"
        --apply config/doaj-openrefine.json
        > {{.LOG}}
      - mkdir -p output
      - > # export to file
        "$CLIENT" -P {{.PORT}} "{{.PROJECT}}"
        --output "$(readlink -m output/doaj-results.tsv)"
        > {{.LOG}}
      - | # print allocated system resources
        PID="$(lsof -t -i:{{.PORT}})"
        echo "used $(($(ps --no-headers -o rss -p "$PID") / 1024)) MB RAM" > {{.LOG}}
        echo "used $(ps --no-headers -o cputime -p "$PID") CPU time" > {{.LOG}}
      - task: :stop # shut down OpenRefine and archive the OpenRefine project
        vars: {DIR: '{{.DIR}}', PROJECT: '{{.PROJECT}}', PORT: '{{.PORT}}'}
    sources:
      - Taskfile.yml
      - input/**
      - config/**
    generates:
      - ./{{.PROJECT}}.openrefine.tar.gz
      - output/**
    ignore_error: true # workaround to avoid an orphaned Java process on error https://github.com/go-task/task/issues/141

  download:
    dir: ./{{.DIR}}
    vars:
      DIR: '{{splitList ":" .TASK | first}}'
    cmds:
      - mkdir -p input config
      - > # Download input
        wget --no-verbose -O input/doaj-article-sample.csv
        https://github.com/felixlohmeier/openrefine-kimws2019/raw/master/doaj-article-sample.csv
      - > # Download config
        wget --no-verbose -O config/doaj-openrefine.json
        https://github.com/felixlohmeier/openrefine-kimws2019/raw/master/doaj-openrefine.json

  default: # enable standalone execution (running `task` in project directory)
    cmds:
      - DIR="${PWD##*/}:main" && cd .. && task "$DIR"