configfile: "config.yaml"


rule all:
    input:
        expand(
            "plots/{country}.hist.pdf",
            country=config["countries"]
        )


rule select_by_country:
    input:
        "data/worldcitiespop.csv"
    output:
        "by-country/{country}.csv"
    conda:
        "envs/xsv.yaml"
    shell:
        "xsv search -s Country '{wildcards.country}' "
        "{input} > {output}"


rule plot_histogram:
    input:
        "by-country/{country}.csv"
    output:
        "plots/{country}.hist.svg"
    conda:
        "envs/matplotlib.yaml"
    script:
        "scripts/plot-hist.py"


rule convert_to_pdf:
    input:
        "{prefix}.svg"
    output:
        "{prefix}.pdf"
    wrapper:
        "0.47.0/utils/cairosvg"


rule download_data:
    output:
        "data/worldcitiespop.csv"
    shell:
        "curl -L https://burntsushi.net/stuff/worldcitiespop.csv > {output}"