/*
 * foo — a web server with optional SSL and GUI support.
 * Demonstrates the full kappa DSL surface.
 */
package "foo" {
    const version = "1.2.3"
    const source  = "https://example.com/foo-${version}.tar.gz"
    license = "MIT"

    provides = ["libfoo.so.1", "foo"]

    patches = [
        {
            url    = "https://example.com/fix-build.patch"
            sha256 = "abc123def456"
            level  = 1
        },
        "local-fix.patch"   // local shorthand, no hash
    ]
    outputs  = ["bin", "lib", "dev"]

    depends = [
        { name = "zlib",    version = ">=1.2,<2.0" },
        { name = "openssl", feature = "ssl" },
        { name = "gtk",     feature = "gui", version = ">=3" },
        "gettext:lib"    // name:output shorthand
    ]

    features {
        ssl     = { enabled = true,  flag = "--with-ssl-dir=${cfg.ssl_dir}" }
        gui     = { enabled = false, flag = "--enable-gui" }
        drivers = { enabled = true,  force = true }
        debug   = false
    }

    config {
        // Written once, left alone on rebuild if the user edits it.
        file "etc/foo.conf" mode = "default" {
            hostname    = ${cfg.hostname !}        // required — user must set
            listen_port = ${cfg.port ? 8080}       // optional, default 8080
            ssl_enabled = ${cfg.ssl ? true}        // optional, default true
        }

        // Always overwritten on rebuild.
        file "etc/log.conf" mode = "replace" {
            log_level = ${cfg.log_level ? info}
            log_path  = ${cfg.log_path ? /var/log/foo}
        }

        // Three-way diff on rebuild.
        file "etc/limits.conf" mode = "merge" {
            max_connections = ${cfg.max_conn ? 1024}
        }
    }

    env {
        CFLAGS   = "-O2 -march=native"
        LDFLAGS  = "-Wl,--as-needed"
        CFLAGS  ?= "-g"
    }

    service {
        runit {
            exec  = "/usr/bin/foo --daemon"
            type  = "forking"
            user  = "foo"
        }
        s6 {
            exec  = "/usr/bin/foo"
            type  = "longrun"
            ports = [80, 443]
            user  = "foo"
        }
    }

    prepare {
        patch "fix-build.patch"
    }

    build {
        ./configure --prefix=${prefix} ${feature.ssl} ${feature.gui}
        make -j${jobs}
    }

    check {
        make check
    }

    install {
        make DESTDIR=${destdir} install
    }
}