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#!/usr/bin/ruby

require 'fileutils'
require 'rubygems'
require 'sqlite3'

def create_tables(db)
    #db.execute "CREATE TABLE IF NOT EXISTS Packages(Id INTEGER PRIMARY KEY, Name TEXT, Version TEXT, Release TEXT, UNIQUE (Name, Version, Release))"
    db.execute "CREATE TABLE IF NOT EXISTS Packages(Id INTEGER PRIMARY KEY, Name TEXT, UNIQUE (Name))"
    db.execute "CREATE TABLE IF NOT EXISTS Runs(Id INTEGER PRIMARY KEY, Start INTEGER, End INTEGER, UNIQUE(Start))"
    db.execute "CREATE TABLE IF NOT EXISTS ResultValues(Id INTEGER PRIMARY KEY, Name TEXT, UNIQUE(Name))"
    db.execute "CREATE TABLE IF NOT EXISTS Results(Id INTEGER PRIMARY KEY, Package INTEGER, Run INTEGER, Result INTEGER,
		FOREIGN KEY(Package) REFERENCES Packages(Id),
		FOREIGN KEY(Run) REFERENCES Run(Id),
		FOREIGN KEY(Result) REFERENCES ResultValues(Id),
                UNIQUE(Package, Run, Result))"
    db.execute "CREATE TABLE IF NOT EXISTS Diffs(Run INTEGER PRIMARY KEY, New INTEGER, Fixed INTEGER, NotFixed INTEGER)"
end

def get_or_add_resultvalue(db, result)
    db.execute "INSERT OR IGNORE INTO ResultValues(Name) VALUES('#{result}')"
    return db.execute("SELECT Id FROM ResultValues WHERE Name = '#{result}'")[0][0]
end

def get_or_add_package(db, name, version, release)
    #db.execute "INSERT OR IGNORE INTO Packages(Name, Version, Release) VALUES('#{name}','#{version}','#{release}')"
    #return db.execute("SELECT Id FROM Packages WHERE Name = '#{name}' AND Version = '#{version}' AND Release = '#{release}'")[0][0]
    db.execute "INSERT OR IGNORE INTO Packages(Name) VALUES('#{name}')"
    return db.execute("SELECT Id FROM Packages WHERE Name = '#{name}'")[0][0]
end
    
def insert_run(db, status_file)
    t_start = Date.parse(File.basename(File.dirname(status_file))).strftime('%s')
    puts "Inserting data for run #{t_start} (#{status_file})"
    t_end = File.mtime(status_file).to_i
    db.execute "INSERT INTO Runs(Start, End) VALUES(#{t_start}, #{t_end})"
    run_id = db.last_insert_row_id
    File.open(status_file, 'r') {|f|
	db.transaction
        f.each_line{|l|
            if l !~ /^(.*)-([^-]*)-([^-]*).src.rpm: (.*)$/ then
                puts l
                next
            end
            name = $1
            version = $2
            release = $3
            result = $4
	    if result == 'rejected' then
		    next
	    end
	    result_id = get_or_add_resultvalue(db, result)
	    package_id = get_or_add_package(db, name, version, release)
	    puts name
            db.execute "INSERT INTO Results(Package, Run, Result) VALUES(#{package_id}, #{run_id}, #{result_id})"
        }
	db.commit
    }
end

def drop_run(db, r)
    t_start = Date.parse(r).strftime('%s')
    run_id = db.execute("SELECT Id FROM Runs WHERE Start='#{t_start}'")[0][0]
    puts "Dropping run #{t_start}"
    db.execute "DELETE FROM Results WHERE Run = #{run_id}"
    db.execute "DELETE FROM Runs WHERE Id = #{run_id}"
end

def diff_runs(db, r1, r2)
    (newly_broken, fixed, still_broken) = (db.execute "SELECT New, Fixed, NotFixed FROM DIffs WHERE Run = #{r2}")[0]
    if newly_broken.nil? then
	    ok_id = get_or_add_resultvalue(db, 'ok')
	    not_on_this_arch_id = get_or_add_resultvalue(db, 'not_on_this_arch')
	    failure_query = "Result NOT IN (#{ok_id}, #{not_on_this_arch_id})"
	    newly_broken = (db.execute "SELECT count(Id) FROM Results WHERE Run = #{r2} AND #{failure_query} AND Package NOT IN (SELECT Package FROM Results WHERE Run = #{r1} AND #{failure_query})")[0][0]
	    fixed = (db.execute "SELECT count(Results.Id) FROM Results,Packages WHERE Run = #{r2} AND Package = Packages.Id AND (Result = #{ok_id} OR Result = #{not_on_this_arch_id}) AND Name IN (SELECT Name FROM Results,Packages WHERE Run = #{r1} AND #{failure_query} AND Package = Packages.Id)")[0][0]
	    still_broken = (db.execute "SELECT count(Id) FROM Results WHERE Run = #{r2} AND #{failure_query} AND Package IN (SELECT Package FROM Results WHERE Run = #{r1} AND #{failure_query})")[0][0]
	    db.execute "INSERT INTO Diffs(Run, New, Fixed, NotFixed) VALUES(#{r2},#{newly_broken},#{fixed},#{still_broken})"
    end
    { 'new' => newly_broken, 'fixed' => fixed, 'not fixed' => still_broken }
end

def report(db)
    resultvalues = db.execute("SELECT Name FROM ResultValues").flatten
    runs = db.execute("SELECT Id, Start FROM Runs ORDER BY Start ASC")
    results = {}
    prev_run = 0
    runs.each{|r|
	run_id = r[0]
	results[run_id] = {}
        data = db.execute "SELECT count(Results.Id), ResultValues.Name FROM Results, ResultValues WHERE Results.Result = ResultValues.Id and Run = #{run_id} GROUP BY ResultValues.Name"
	total = 0
	success = 0
	failure = 0
	data.each{|d|
            results[run_id][d[1]] = d[0]
	    total += d[0]
	    if (d[1] == "ok")
                success += d[0]
	    elsif (d[1] == "build_failure" || d[1] == "missing_dep" || d[1] == "install_deps_failure" || d[1] == "recreate_srpm_failure")
		failure += d[0]
	    end
	    results[run_id]['success'] = success
	    results[run_id]['failure'] = failure
	    results[run_id]['total'] = total
	    results[run_id]['success_rate'] = (1000*success/(success+failure)).round.to_f/10
	}
	results[run_id].merge!(diff_runs(db, prev_run, run_id))
	prev_run = run_id
    }
    results
end

def export_data(db, target_dir)	
    resultvalues = db.execute("SELECT Name FROM ResultValues").flatten
    runs = db.execute("SELECT Id, Start FROM Runs ORDER BY Start DESC")
    results = report(db)
    File.open(target_dir + "/data.js", 'w') {|df|    
    df.puts "var data = { cols: [ {id: 'A', label: 'Date', type: 'date'},"
    col = 'A'
    resultvalues.each{|v| df.puts "{id: '#{col.next!}', label: '#{v}', type: 'number'}," }
    df.puts "{id: '#{col.next!}', label: 'Total', type: 'number'},"
    df.puts "{id: '#{col.next!}', label: 'Success Rate', type: 'number'},"
    df.puts "{id: '#{col.next!}', label: 'Newly Broken', type: 'number'},"
    df.puts "{id: '#{col.next!}', label: 'Fixed', type: 'number'},"
    df.puts "{id: '#{col.next!}', label: 'Not Fixed', type: 'number'},"
    df.puts  "],"
    df.puts  "rows: ["
    runs.each{|r|
	result = results[r[0]]
	date_val = "new Date(#{DateTime.strptime(r[1].to_s, '%s').strftime('%Y, %m-1, %d')}, 0, 0, 0)"
	date_str = DateTime.strptime(r[1].to_s, '%s').strftime('%Y-%m-%d')
	df.print "{c:[{v: #{date_val}, f: '<a href=\"results.php?run=#{date_str}\">#{date_str}</a>'},"
        resultvalues.each{|v| df.print "{v: #{result[v] || 0}},"}
	df.print "{v: #{result['total']}},"
	df.print "{v: #{result['success_rate']}, f: '#{result['success_rate']}%'},"
	df.print "{v: #{result['new']}},"
	df.print "{v: #{result['fixed']}},"
	df.print "{v: #{result['not fixed']}},"
	df.puts "]},"
    }
    df.puts "]}"
    }
    FileUtils.cp("autobuild.db", target_dir)
end

def finish
	# get date of finished one
	# olddate = readlink current latest
	# change link to point to newdate
	# cleanlogs.sh olddate newdate
	# insert newdate
end

begin 
    db = SQLite3::Database.open "autobuild.db"
    create_tables(db)
    if (ARGV[0] == 'insert') then
        insert_run(db, ARGV[1])
    elsif (ARGV[0] == 'report')
        export_data(db, ARGV[1])
    elsif (ARGV[0] == 'drop')
        drop_run(db, ARGV[1])
    end
rescue SQLite3::Exception => e 
    
    puts "Exception occured"
    puts e
    
ensure
    db.close if db
end