import { Context } from "../context"

export namespace Log {

const ctx = Context.create<{

tags: Record<string, any>

}>()

export function create(tags?: Record<string, any>) {

tags = tags || {}

const result = {

info(message?: any, extra?: Record<string, any>) {

const prefix = Object.entries({

...use().tags,

...tags,

...extra,

})

.map(([key, value]) => `${key}=${value}`)

.join(" ")

console.log(prefix, message)

return result

},

tag(key: string, value: string) {

if (tags) tags[key] = value

return result

},

clone() {

return Log.create({ ...tags })

},

}

return result

}

export function provide<R>(tags: Record<string, any>, cb: () => R) {

const existing = use()

return ctx.provide(

{

tags: {

...existing.tags,

...tags,

},

},

cb,

)

}

function use() {

try {

return ctx.use()

} catch (e) {

return { tags: {} }

}

}

}