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import { getFilename } from "@opencode-ai/core/util/path"
import { type AgentPartInput, type FilePartInput, type Part, type TextPartInput } from "@opencode-ai/sdk/v2/client"
import type { FileSelection } from "@/context/file"
import { encodeFilePath } from "@/context/file/path"
import type { AgentPart, FileAttachmentPart, ImageAttachmentPart, Prompt } from "@/context/prompt"
import { Identifier } from "@/utils/id"
import { createCommentMetadata, formatCommentNote } from "@/utils/comment-note"
type PromptRequestPart = (TextPartInput | FilePartInput | AgentPartInput) & { id: string }
type ContextFile = {
key: string
type: "file"
path: string
selection?: FileSelection
comment?: string
commentID?: string
commentOrigin?: "review" | "file"
preview?: string
}
type BuildRequestPartsInput = {
prompt: Prompt
context: ContextFile[]
images: ImageAttachmentPart[]
text: string
messageID: string
sessionID: string
sessionDirectory: string
}
const absolute = (directory: string, path: string) => {
if (path.startsWith("/")) return path
if (/^[A-Za-z]:[\\/]/.test(path) || /^[A-Za-z]:$/.test(path)) return path
if (path.startsWith("\\\\") || path.startsWith("//")) return path
return `${directory.replace(/[\\/]+$/, "")}/${path}`
}
const fileQuery = (selection: FileSelection | undefined) =>
selection ? `?start=${selection.startLine}&end=${selection.endLine}` : ""
const mention = /(^|[\s([{"'])@(\S+)/g
const parseCommentMentions = (comment: string) => {
return Array.from(comment.matchAll(mention)).flatMap((match) => {
const path = (match[2] ?? "").replace(/[.,!?;:)}\]"']+$/, "")
if (!path) return []
return [path]
})
}
const isFileAttachment = (part: Prompt[number]): part is FileAttachmentPart => part.type === "file"
const isAgentAttachment = (part: Prompt[number]): part is AgentPart => part.type === "agent"
const toOptimisticPart = (part: PromptRequestPart, sessionID: string, messageID: string): Part => {
if (part.type === "text") {
return {
id: part.id,
type: "text",
text: part.text,
synthetic: part.synthetic,
ignored: part.ignored,
time: part.time,
metadata: part.metadata,
sessionID,
messageID,
}
}
if (part.type === "file") {
return {
id: part.id,
type: "file",
mime: part.mime,
filename: part.filename,
url: part.url,
source: part.source,
sessionID,
messageID,
}
}
return {
id: part.id,
type: "agent",
name: part.name,
source: part.source,
sessionID,
messageID,
}
}
export function buildRequestParts(input: BuildRequestPartsInput) {
const requestParts: PromptRequestPart[] = [
{
id: Identifier.ascending("part"),
type: "text",
text: input.text,
},
]
const files = input.prompt.filter(isFileAttachment).map((attachment) => {
const path = absolute(input.sessionDirectory, attachment.path)
return {
id: Identifier.ascending("part"),
type: "file",
mime: "text/plain",
url: `file://${encodeFilePath(path)}${fileQuery(attachment.selection)}`,
filename: getFilename(attachment.path),
source: {
type: "file",
text: {
value: attachment.content,
start: attachment.start,
end: attachment.end,
},
path,
},
} satisfies PromptRequestPart
})
const agents = input.prompt.filter(isAgentAttachment).map((attachment) => {
return {
id: Identifier.ascending("part"),
type: "agent",
name: attachment.name,
source: {
value: attachment.content,
start: attachment.start,
end: attachment.end,
},
} satisfies PromptRequestPart
})
const used = new Set(files.map((part) => part.url))
const context = input.context.flatMap((item) => {
const path = absolute(input.sessionDirectory, item.path)
const url = `file://${encodeFilePath(path)}${fileQuery(item.selection)}`
const comment = item.comment?.trim()
if (!comment && used.has(url)) return []
used.add(url)
const filePart = {
id: Identifier.ascending("part"),
type: "file",
mime: "text/plain",
url,
filename: getFilename(item.path),
} satisfies PromptRequestPart
if (!comment) return [filePart]
const mentions = parseCommentMentions(comment).flatMap((path) => {
const url = `file://${encodeFilePath(absolute(input.sessionDirectory, path))}`
if (used.has(url)) return []
used.add(url)
return [
{
id: Identifier.ascending("part"),
type: "file",
mime: "text/plain",
url,
filename: getFilename(path),
} satisfies PromptRequestPart,
]
})
return [
{
id: Identifier.ascending("part"),
type: "text",
text: formatCommentNote({ path: item.path, selection: item.selection, comment }),
synthetic: true,
metadata: createCommentMetadata({
path: item.path,
selection: item.selection,
comment,
preview: item.preview,
origin: item.commentOrigin,
}),
} satisfies PromptRequestPart,
filePart,
...mentions,
]
})
const images = input.images.map((attachment) => {
return {
id: Identifier.ascending("part"),
type: "file",
mime: attachment.mime,
url: attachment.dataUrl,
filename: attachment.filename,
} satisfies PromptRequestPart
})
requestParts.push(...files, ...context, ...agents, ...images)
return {
requestParts,
optimisticParts: requestParts.map((part) => toOptimisticPart(part, input.sessionID, input.messageID)),
}
}
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