create table builds (
    id            integer primary key autoincrement not null,
    timestamp     integer not null, -- time this build was added to the db (in Unix time)

    -- Info about the inputs.
    project       text not null, -- !!! foreign key
    jobSet        text not null, -- !!! foreign key
    attrName      text not null,

    -- !!! list all the inputs / arguments

    -- Info about the build result.
    description   text,
    drvPath       text not null,
    outPath       text not null,
    isCachedBuild integer not null, -- boolean
    buildStatus   integer, -- 0 = succeeded, 1 = Nix build failure, 2 = positive build failure
    errorMsg      text, -- error message in case of a Nix failure
    startTime     integer, -- in Unix time, 0 = used cached build result
    stopTime      integer
);


create table buildInputs (
    buildId       integer not null,
    -- Copied from the jobSetInputs from which the build was created.
    name          text not null,
    type          text not null,
    uri           text,
    revision      integer,
    tag           text,
    primary key   (buildId, name),
    foreign key   (buildId) references builds(id) on delete cascade -- ignored by sqlite
);


create table buildProducts (
    buildId       integer not null,
    type          text not null, -- "nix-build", "file", "doc", "report", ...
    subtype       text not null, -- "sources", "rpm", ...
    path          text not null,
    primary key   (buildId, type, subType),
    foreign key   (buildId) references builds(id) on delete cascade -- ignored by sqlite
);


create table buildLogs (
    buildId       integer not null,
    logPhase      text not null,
    path          text not null,
    type          text not null,
    primary key   (buildId, logPhase),
    foreign key   (buildId) references builds(id) on delete cascade -- ignored by sqlite
);


-- Emulate "on delete cascade" foreign key constraints.
create trigger cascadeBuildDeletion
  before delete on builds
  for each row begin
    delete from buildInputs where buildId = old.id;
    delete from buildLogs where buildId = old.id;
    delete from buildProducts where buildId = old.id;
  end;


create table projects (
    name          text primary key not null 
);


-- A jobset consists of a set of inputs (e.g. SVN repositories), one
-- of which contains a Nix expression containing an attribute set
-- describing build jobs.
create table jobSets (
    name          text not null,
    project       text not null,
    description   text,
    nixExprInput  text not null, -- name of the jobSetInput containing the Nix expression
    nixExprPath   text not null, -- relative path of the Nix expression
    primary key   (project, name),
    foreign key   (project) references projects(name) on delete cascade, -- ignored by sqlite
    foreign key   (project, name, nixExprInput) references jobSetInputs(project, job, name)
);


create table jobSetInputs (
    project       text not null,
    job           text not null,
    name          text not null,
    type          text not null, -- "svn", "cvs", "path", "file"
    uri           text,
    revision      integer, -- for svn
    tag           text, -- for cvs
    primary key   (project, job, name),
    foreign key   (project, job) references jobSets(project, name) on delete cascade -- ignored by sqlite
);