を[機「き」]に => Use A as an opportunity N1
Time, Situation
[次第「じだい」]だ => It depends on A N2
Based, Focused, Depending on
[可能系「かのうけい」] => Can, be able to, be possible to N4
Can, Should, Must
[次第「じだい」]では => Depending on A, B may change N2
Based, Focused, Depending on
を[契機「けいき」] => As a good opportunity A, (do) B N2
Information, Report