-- Application configuration.


local ROOT = os.getenv("PKA_ROOT") or "./"

return {
    id = {
        -- Length in ASCII characters of system-generated IDs.
        len = 16,
        -- Two seeds for the random ID generator.
        seed = {256, 512},
    },
    md = {
        -- Single-valued fields. TODO rely on content model cardinality.
        single_values = {
            ["dc:identifier"] = true,
            ["dc:type"] = true,
            ["dc:title"] = true,
            ["path"] = true,
            ["pas:sourcePath"] = true,
        },
    },
    fs = {
        -- Base path to write opaque resources.
        ores_path = ROOT .. "data/ores/",
        -- Base path of LSUP store for descriptive resources (RDF).
        dres_path = ROOT .. "data/dres/",

        -- How many bytes to read when handling files. Adjust to memory
        -- availability.
        stream_chunk_size = 1024 ^ 2,  -- 1Mb
    },

    -- Namespace prefixes to populate the Pocket Archive NS map.
    namespace = {
        dc = "http://purl.org/dc/terms/",
        foaf = "http://xmlns.com/foaf/0.1/",
        pas = "http://id.pkar.knowledgetx.com/schema#",
        par = "urn:pkar:resource/",
        premis = "http://id.loc.gov/vocabulary/preservation/",
        rdf = "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
        rdfs = "http://www.w3.org/2000/01/rdf-schema#",
        xsd = "http://www.w3.org/2001/XMLSchema#",
    },
    htmlgen = {
        out_dir = "./out/html",
    },
}