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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| import { PgRollOperation } from '@xata.io/pgroll'; | ||
| import { PartialDeep } from 'type-fest'; | ||
| import { Schemas } from '@xata.io/client'; | ||
| import { generateLinkReference, tableNameFromLinkComment, xataColumnTypeToPgRoll } from '../migrations/pgroll.js'; | ||
|
|
||
| export function compareSchemas( | ||
| source: PartialDeep<Schemas.BranchSchema>, | ||
| target: PartialDeep<Schemas.BranchSchema> | ||
| ): { edits: PgRollOperation[] } { | ||
| const edits: PgRollOperation[] = []; | ||
|
|
||
| // Compare tables | ||
| const sourceTables = Object.keys(source.tables ?? {}); | ||
| const targetTables = Object.keys(target.tables ?? {}); | ||
| const newTables = targetTables.filter((table) => !sourceTables.includes(table)); | ||
| const deletedTables = sourceTables.filter((table) => !targetTables.includes(table)); | ||
|
|
||
| // Compare columns | ||
| for (const table of sourceTables) { | ||
| const sourceColumns = Object.keys(source.tables?.[table]?.columns ?? {}); | ||
| const targetColumns = Object.keys(target.tables?.[table]?.columns ?? {}); | ||
| const newColumns = targetColumns.filter((column) => !sourceColumns.includes(column)); | ||
| const deletedColumns = sourceColumns.filter((column) => !targetColumns.includes(column)); | ||
|
|
||
| // Add columns | ||
| for (const column of newColumns) { | ||
| const props = target.tables?.[table]?.columns?.[column] ?? {}; | ||
| edits.push({ | ||
| add_column: { | ||
| table, | ||
| column: { | ||
| name: column, | ||
| type: xataColumnTypeToPgRoll(props?.type as any), | ||
| comment: props?.comment, | ||
| nullable: !(props?.nullable === false), | ||
| unique: props?.unique, | ||
| default: props?.default ?? undefined, | ||
| references: | ||
| props?.type === 'link' && props?.name | ||
| ? generateLinkReference({ | ||
| column: props.name, | ||
| table: tableNameFromLinkComment(props?.comment ?? '') ?? '' | ||
| }) | ||
| : undefined | ||
| } | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| // Delete columns | ||
| for (const column of deletedColumns) { | ||
| edits.push({ drop_column: { table, column } }); | ||
| } | ||
|
|
||
| // Compare column properties | ||
| for (const column of targetColumns) { | ||
| const sourceProps = source.tables?.[table]?.columns?.[column] ?? {}; | ||
| const targetProps = target.tables?.[table]?.columns?.[column] ?? {}; | ||
|
|
||
| if (sourceProps.type !== targetProps.type) { | ||
| edits.push({ | ||
| alter_column: { | ||
| table, | ||
| column, | ||
| type: targetProps.type, | ||
| references: | ||
| targetProps?.type === 'link' && targetProps?.name | ||
| ? generateLinkReference({ | ||
| column: targetProps.name, | ||
| table: tableNameFromLinkComment(targetProps?.comment ?? '') ?? '' | ||
| }) | ||
| : undefined | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| if (sourceProps.nullable !== targetProps.nullable) { | ||
| edits.push({ alter_column: { table, column, nullable: targetProps.nullable } }); | ||
| } | ||
|
|
||
| if (sourceProps.unique !== targetProps.unique) { | ||
| edits.push({ | ||
| alter_column: { | ||
| table, | ||
| column, | ||
| unique: { | ||
| name: `${table}_${column}_unique` | ||
| } | ||
| } | ||
| }); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // Delete tables | ||
| for (const table of deletedTables) { | ||
| edits.push({ drop_table: { name: table } }); | ||
| } | ||
|
|
||
| // Add new tables | ||
| for (const table of newTables) { | ||
| const props = target.tables?.[table] ?? {}; | ||
| edits.push({ | ||
| create_table: { | ||
| name: table, | ||
| comment: props.comment, | ||
| columns: Object.entries(props.columns ?? {}).map(([name, column]) => { | ||
| return { | ||
| name, | ||
| type: xataColumnTypeToPgRoll(column?.type as any), | ||
| comment: column?.comment, | ||
| nullable: !(column?.nullable === false), | ||
| unique: column?.unique, | ||
| default: column?.default ?? undefined, | ||
| references: | ||
| column?.type === 'link' && column?.name | ||
| ? generateLinkReference({ | ||
| column: column?.name, | ||
| table: tableNameFromLinkComment(column?.comment ?? '') ?? '' | ||
| }) | ||
| : undefined | ||
| }; | ||
| }) | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| return { edits }; | ||
| } |
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